/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 20:53:23,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 20:53:23,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 20:53:23,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 20:53:23,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 20:53:23,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 20:53:23,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 20:53:23,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 20:53:23,815 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 20:53:23,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 20:53:23,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 20:53:23,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 20:53:23,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 20:53:23,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 20:53:23,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 20:53:23,816 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 20:53:23,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 20:53:23,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:53:23,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 20:53:23,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 20:53:23,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 20:53:23,818 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 20:53:23,818 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 20:53:24,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 20:53:24,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 20:53:24,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 20:53:24,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 20:53:24,048 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 20:53:24,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-01-31 20:53:24,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39470aba6/56779791e1774d188d16e162ca686a99/FLAG161ac9017 [2022-01-31 20:53:24,442 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 20:53:24,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-01-31 20:53:24,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39470aba6/56779791e1774d188d16e162ca686a99/FLAG161ac9017 [2022-01-31 20:53:24,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39470aba6/56779791e1774d188d16e162ca686a99 [2022-01-31 20:53:24,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 20:53:24,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 20:53:24,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 20:53:24,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 20:53:24,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 20:53:24,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:53:24" (1/1) ... [2022-01-31 20:53:24,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222800c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:24, skipping insertion in model container [2022-01-31 20:53:24,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:53:24" (1/1) ... [2022-01-31 20:53:24,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 20:53:24,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 20:53:25,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-01-31 20:53:25,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:53:25,045 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 20:53:25,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-01-31 20:53:25,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:53:25,084 INFO L208 MainTranslator]: Completed translation [2022-01-31 20:53:25,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25 WrapperNode [2022-01-31 20:53:25,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 20:53:25,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 20:53:25,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 20:53:25,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 20:53:25,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 20:53:25,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 20:53:25,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 20:53:25,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 20:53:25,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (1/1) ... [2022-01-31 20:53:25,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:53:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 20:53:25,156 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) [2022-01-31 20:53:25,187 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 [2022-01-31 20:53:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 20:53:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 20:53:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 20:53:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 20:53:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 20:53:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 20:53:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 20:53:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 20:53:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 20:53:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 20:53:25,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 20:53:25,277 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 20:53:25,279 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 20:53:25,426 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 20:53:25,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 20:53:25,432 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 20:53:25,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:53:25 BoogieIcfgContainer [2022-01-31 20:53:25,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 20:53:25,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 20:53:25,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 20:53:25,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 20:53:25,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:53:24" (1/3) ... [2022-01-31 20:53:25,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea7620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:53:25, skipping insertion in model container [2022-01-31 20:53:25,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:53:25" (2/3) ... [2022-01-31 20:53:25,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea7620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:53:25, skipping insertion in model container [2022-01-31 20:53:25,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:53:25" (3/3) ... [2022-01-31 20:53:25,440 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2022-01-31 20:53:25,444 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 20:53:25,444 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 20:53:25,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 20:53:25,487 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-01-31 20:53:25,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 20:53:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 20:53:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 20:53:25,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:25,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:25,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1210672905, now seen corresponding path program 1 times [2022-01-31 20:53:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:25,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47012717] [2022-01-31 20:53:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:25,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:25,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:53:25,790 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:25,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47012717] [2022-01-31 20:53:25,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [47012717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:25,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:25,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 20:53:25,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624570988] [2022-01-31 20:53:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:25,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 20:53:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 20:53:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 20:53:25,831 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 20:53:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:25,957 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2022-01-31 20:53:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 20:53:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-01-31 20:53:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:25,970 INFO L225 Difference]: With dead ends: 62 [2022-01-31 20:53:25,970 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 20:53:25,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 20:53:25,975 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:25,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:53:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 20:53:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-01-31 20:53:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 20:53:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-01-31 20:53:26,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-01-31 20:53:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:26,010 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-01-31 20:53:26,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 20:53:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-01-31 20:53:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 20:53:26,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:26,011 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] [2022-01-31 20:53:26,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 20:53:26,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 778735204, now seen corresponding path program 1 times [2022-01-31 20:53:26,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:26,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937063217] [2022-01-31 20:53:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:26,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:26,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:26,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:26,032 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:53:26,153 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937063217] [2022-01-31 20:53:26,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [937063217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:26,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:26,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 20:53:26,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711596973] [2022-01-31 20:53:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:26,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 20:53:26,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 20:53:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 20:53:26,156 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 20:53:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:26,321 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-01-31 20:53:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 20:53:26,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-31 20:53:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:26,323 INFO L225 Difference]: With dead ends: 52 [2022-01-31 20:53:26,324 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 20:53:26,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 20:53:26,325 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:26,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 31 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:53:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 20:53:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-01-31 20:53:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 20:53:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-01-31 20:53:26,348 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2022-01-31 20:53:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:26,349 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-01-31 20:53:26,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 20:53:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-01-31 20:53:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 20:53:26,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:26,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:26,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 20:53:26,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1692936895, now seen corresponding path program 2 times [2022-01-31 20:53:26,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:26,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460480362] [2022-01-31 20:53:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:26,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:26,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:26,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:26,365 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 20:53:26,526 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:26,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460480362] [2022-01-31 20:53:26,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1460480362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:26,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:26,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 20:53:26,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472005104] [2022-01-31 20:53:26,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:26,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 20:53:26,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 20:53:26,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 20:53:26,529 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 20:53:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:26,691 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-01-31 20:53:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 20:53:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-01-31 20:53:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:26,709 INFO L225 Difference]: With dead ends: 60 [2022-01-31 20:53:26,709 INFO L226 Difference]: Without dead ends: 49 [2022-01-31 20:53:26,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-31 20:53:26,711 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:26,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 39 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:53:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-31 20:53:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-01-31 20:53:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 20:53:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-01-31 20:53:26,722 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2022-01-31 20:53:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:26,722 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-01-31 20:53:26,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 20:53:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-01-31 20:53:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 20:53:26,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:26,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:26,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 20:53:26,724 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash 912079898, now seen corresponding path program 3 times [2022-01-31 20:53:26,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:26,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528521694] [2022-01-31 20:53:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:26,744 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:26,744 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:26,746 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 20:53:26,957 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528521694] [2022-01-31 20:53:26,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1528521694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:26,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:26,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 20:53:26,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311470144] [2022-01-31 20:53:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:26,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 20:53:26,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:26,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 20:53:26,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 20:53:26,959 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 20:53:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:27,174 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2022-01-31 20:53:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 20:53:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2022-01-31 20:53:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:27,178 INFO L225 Difference]: With dead ends: 68 [2022-01-31 20:53:27,179 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 20:53:27,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-31 20:53:27,189 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:27,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 37 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:53:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 20:53:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2022-01-31 20:53:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 20:53:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-31 20:53:27,200 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2022-01-31 20:53:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:27,201 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-31 20:53:27,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 20:53:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-31 20:53:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 20:53:27,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:27,202 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:27,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 20:53:27,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash 42254965, now seen corresponding path program 4 times [2022-01-31 20:53:27,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:27,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84178236] [2022-01-31 20:53:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:27,207 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:27,207 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:27,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:27,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 20:53:27,415 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84178236] [2022-01-31 20:53:27,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [84178236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:27,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:27,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 20:53:27,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118503156] [2022-01-31 20:53:27,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:27,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 20:53:27,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 20:53:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 20:53:27,417 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 20:53:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:27,726 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-01-31 20:53:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 20:53:27,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2022-01-31 20:53:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:27,729 INFO L225 Difference]: With dead ends: 76 [2022-01-31 20:53:27,729 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 20:53:27,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-31 20:53:27,736 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:27,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 45 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 20:53:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 20:53:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2022-01-31 20:53:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 20:53:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-01-31 20:53:27,754 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 45 [2022-01-31 20:53:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:27,756 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-01-31 20:53:27,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 20:53:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-01-31 20:53:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 20:53:27,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:27,759 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:27,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 20:53:27,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1041874384, now seen corresponding path program 5 times [2022-01-31 20:53:27,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:27,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714888612] [2022-01-31 20:53:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:27,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:27,767 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:27,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:27,769 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 20:53:27,923 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:27,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714888612] [2022-01-31 20:53:27,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [714888612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:27,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:27,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 20:53:27,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826509191] [2022-01-31 20:53:27,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:27,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 20:53:27,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:27,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 20:53:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 20:53:27,925 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 20:53:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:28,256 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2022-01-31 20:53:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 20:53:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2022-01-31 20:53:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:28,258 INFO L225 Difference]: With dead ends: 84 [2022-01-31 20:53:28,258 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 20:53:28,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-31 20:53:28,259 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:28,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 58 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 20:53:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 20:53:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2022-01-31 20:53:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 20:53:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-01-31 20:53:28,272 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 53 [2022-01-31 20:53:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:28,272 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-01-31 20:53:28,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 20:53:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-01-31 20:53:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 20:53:28,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:28,273 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:28,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 20:53:28,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1926704683, now seen corresponding path program 6 times [2022-01-31 20:53:28,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:28,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687989653] [2022-01-31 20:53:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:28,282 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:28,282 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:28,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:28,283 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 20:53:28,465 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:28,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687989653] [2022-01-31 20:53:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687989653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:28,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:28,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 20:53:28,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717465304] [2022-01-31 20:53:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:28,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 20:53:28,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 20:53:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 20:53:28,467 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 20:53:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:28,849 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2022-01-31 20:53:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 20:53:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2022-01-31 20:53:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:28,850 INFO L225 Difference]: With dead ends: 92 [2022-01-31 20:53:28,851 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 20:53:28,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-31 20:53:28,852 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 77 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:28,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 61 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 20:53:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 20:53:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 50. [2022-01-31 20:53:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 20:53:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-01-31 20:53:28,864 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 61 [2022-01-31 20:53:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:28,865 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-01-31 20:53:28,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 20:53:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-01-31 20:53:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 20:53:28,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:28,867 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 20:53:28,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1064833926, now seen corresponding path program 7 times [2022-01-31 20:53:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076570801] [2022-01-31 20:53:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:28,874 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:28,874 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:28,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:28,876 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 20:53:29,063 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076570801] [2022-01-31 20:53:29,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1076570801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:29,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:29,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 20:53:29,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788223465] [2022-01-31 20:53:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:29,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 20:53:29,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 20:53:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-31 20:53:29,067 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 20:53:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:29,525 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2022-01-31 20:53:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 20:53:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2022-01-31 20:53:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:29,528 INFO L225 Difference]: With dead ends: 100 [2022-01-31 20:53:29,528 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 20:53:29,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-31 20:53:29,529 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:29,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 64 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 20:53:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 20:53:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2022-01-31 20:53:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 20:53:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-01-31 20:53:29,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 69 [2022-01-31 20:53:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:29,550 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-01-31 20:53:29,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 20:53:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-01-31 20:53:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-31 20:53:29,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:29,553 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:29,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 20:53:29,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1471639009, now seen corresponding path program 8 times [2022-01-31 20:53:29,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:29,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403276576] [2022-01-31 20:53:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:29,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:29,563 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:29,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:29,564 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 20:53:29,741 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403276576] [2022-01-31 20:53:29,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1403276576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:29,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:29,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 20:53:29,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373006791] [2022-01-31 20:53:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:29,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 20:53:29,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 20:53:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-31 20:53:29,743 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 20:53:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:30,254 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-01-31 20:53:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 20:53:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2022-01-31 20:53:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:30,256 INFO L225 Difference]: With dead ends: 108 [2022-01-31 20:53:30,256 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 20:53:30,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-01-31 20:53:30,257 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:30,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 52 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 20:53:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 20:53:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2022-01-31 20:53:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 20:53:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-01-31 20:53:30,272 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 77 [2022-01-31 20:53:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:30,273 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-01-31 20:53:30,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 20:53:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-01-31 20:53:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 20:53:30,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:30,274 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:30,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 20:53:30,274 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2075116228, now seen corresponding path program 9 times [2022-01-31 20:53:30,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:30,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32697496] [2022-01-31 20:53:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:30,277 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:30,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:30,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:30,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 20:53:30,505 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32697496] [2022-01-31 20:53:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [32697496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:30,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:30,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 20:53:30,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698418154] [2022-01-31 20:53:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:30,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 20:53:30,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 20:53:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-31 20:53:30,507 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 20:53:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:31,163 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2022-01-31 20:53:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 20:53:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2022-01-31 20:53:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:31,165 INFO L225 Difference]: With dead ends: 116 [2022-01-31 20:53:31,165 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 20:53:31,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-01-31 20:53:31,166 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 103 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:31,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 80 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 20:53:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 20:53:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2022-01-31 20:53:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 20:53:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-01-31 20:53:31,182 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 85 [2022-01-31 20:53:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:31,182 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-01-31 20:53:31,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 20:53:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-01-31 20:53:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 20:53:31,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:31,183 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:31,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 20:53:31,184 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1560444521, now seen corresponding path program 10 times [2022-01-31 20:53:31,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:31,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321773903] [2022-01-31 20:53:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:31,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:31,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:31,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:31,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 20:53:31,389 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:31,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321773903] [2022-01-31 20:53:31,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [321773903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:31,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:31,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 20:53:31,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750225458] [2022-01-31 20:53:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:31,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 20:53:31,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 20:53:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-31 20:53:31,391 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 20:53:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:32,069 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2022-01-31 20:53:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 20:53:32,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2022-01-31 20:53:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:32,071 INFO L225 Difference]: With dead ends: 124 [2022-01-31 20:53:32,071 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 20:53:32,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-31 20:53:32,072 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:32,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 68 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 20:53:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 20:53:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 66. [2022-01-31 20:53:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 20:53:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-01-31 20:53:32,088 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 93 [2022-01-31 20:53:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:32,089 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-01-31 20:53:32,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 20:53:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-01-31 20:53:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-31 20:53:32,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:32,090 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:32,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 20:53:32,090 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1501938958, now seen corresponding path program 11 times [2022-01-31 20:53:32,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:32,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739924508] [2022-01-31 20:53:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:32,094 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:32,094 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:32,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:32,095 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 20:53:32,342 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739924508] [2022-01-31 20:53:32,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [739924508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:32,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:32,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 20:53:32,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682672535] [2022-01-31 20:53:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:32,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 20:53:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 20:53:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-31 20:53:32,344 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 20:53:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:33,106 INFO L93 Difference]: Finished difference Result 132 states and 158 transitions. [2022-01-31 20:53:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 20:53:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2022-01-31 20:53:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:33,107 INFO L225 Difference]: With dead ends: 132 [2022-01-31 20:53:33,107 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 20:53:33,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-01-31 20:53:33,108 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:33,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 56 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 20:53:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 20:53:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 70. [2022-01-31 20:53:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 20:53:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2022-01-31 20:53:33,125 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 101 [2022-01-31 20:53:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:33,125 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2022-01-31 20:53:33,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 20:53:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2022-01-31 20:53:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-31 20:53:33,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:33,127 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:33,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 20:53:33,127 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1769903795, now seen corresponding path program 12 times [2022-01-31 20:53:33,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:33,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382888093] [2022-01-31 20:53:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:33,130 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:33,130 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:33,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:33,132 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 20:53:33,391 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382888093] [2022-01-31 20:53:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [382888093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:33,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:33,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 20:53:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015539490] [2022-01-31 20:53:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 20:53:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 20:53:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-31 20:53:33,393 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 20:53:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:34,315 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2022-01-31 20:53:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 20:53:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2022-01-31 20:53:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:34,316 INFO L225 Difference]: With dead ends: 140 [2022-01-31 20:53:34,317 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 20:53:34,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2022-01-31 20:53:34,318 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:34,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 74 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 20:53:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 20:53:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 74. [2022-01-31 20:53:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 16 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 20:53:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2022-01-31 20:53:34,335 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 109 [2022-01-31 20:53:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:34,335 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2022-01-31 20:53:34,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 20:53:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2022-01-31 20:53:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-31 20:53:34,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:34,337 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:34,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 20:53:34,337 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1882321752, now seen corresponding path program 13 times [2022-01-31 20:53:34,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600324373] [2022-01-31 20:53:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:34,340 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:34,340 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:34,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:34,341 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 20:53:34,593 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:34,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600324373] [2022-01-31 20:53:34,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1600324373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:34,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:34,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 20:53:34,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638672086] [2022-01-31 20:53:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:34,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 20:53:34,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 20:53:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-01-31 20:53:34,595 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 20:53:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:35,686 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2022-01-31 20:53:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 20:53:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2022-01-31 20:53:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:35,688 INFO L225 Difference]: With dead ends: 148 [2022-01-31 20:53:35,689 INFO L226 Difference]: Without dead ends: 137 [2022-01-31 20:53:35,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-01-31 20:53:35,690 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 129 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:35,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 127 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 20:53:35,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-31 20:53:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2022-01-31 20:53:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 20:53:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2022-01-31 20:53:35,709 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 117 [2022-01-31 20:53:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:35,709 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2022-01-31 20:53:35,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 20:53:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2022-01-31 20:53:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-31 20:53:35,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:35,711 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:35,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 20:53:35,711 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1004854013, now seen corresponding path program 14 times [2022-01-31 20:53:35,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786354699] [2022-01-31 20:53:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:35,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:35,714 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:35,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:35,715 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 20:53:36,015 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:36,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786354699] [2022-01-31 20:53:36,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1786354699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:36,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:36,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 20:53:36,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142890881] [2022-01-31 20:53:36,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:36,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 20:53:36,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 20:53:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-31 20:53:36,017 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 20:53:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:37,109 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2022-01-31 20:53:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 20:53:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2022-01-31 20:53:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:37,111 INFO L225 Difference]: With dead ends: 156 [2022-01-31 20:53:37,111 INFO L226 Difference]: Without dead ends: 145 [2022-01-31 20:53:37,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 20:53:37,112 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 153 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:37,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 95 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 20:53:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-31 20:53:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2022-01-31 20:53:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 20:53:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2022-01-31 20:53:37,132 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 125 [2022-01-31 20:53:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:37,132 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2022-01-31 20:53:37,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 20:53:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2022-01-31 20:53:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-31 20:53:37,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:37,133 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:37,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 20:53:37,134 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2049159774, now seen corresponding path program 15 times [2022-01-31 20:53:37,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:37,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134407103] [2022-01-31 20:53:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:37,137 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:37,137 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:37,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:37,138 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 20:53:37,464 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:37,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134407103] [2022-01-31 20:53:37,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [134407103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:37,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:37,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 20:53:37,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642144347] [2022-01-31 20:53:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:37,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 20:53:37,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 20:53:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-31 20:53:37,466 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 20:53:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:38,699 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2022-01-31 20:53:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 20:53:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2022-01-31 20:53:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:38,700 INFO L225 Difference]: With dead ends: 164 [2022-01-31 20:53:38,700 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 20:53:38,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 20:53:38,702 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 159 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:38,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 108 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 20:53:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 20:53:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2022-01-31 20:53:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 20:53:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2022-01-31 20:53:38,722 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 133 [2022-01-31 20:53:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:38,723 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2022-01-31 20:53:38,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 20:53:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2022-01-31 20:53:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-31 20:53:38,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:38,724 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:38,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 20:53:38,724 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:38,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 228766905, now seen corresponding path program 16 times [2022-01-31 20:53:38,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:38,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499941828] [2022-01-31 20:53:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:38,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:38,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:38,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:38,729 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 20:53:39,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499941828] [2022-01-31 20:53:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [499941828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:39,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:39,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 20:53:39,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581351715] [2022-01-31 20:53:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 20:53:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 20:53:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-01-31 20:53:39,062 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 20:53:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:40,553 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2022-01-31 20:53:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 20:53:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2022-01-31 20:53:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:40,557 INFO L225 Difference]: With dead ends: 172 [2022-01-31 20:53:40,557 INFO L226 Difference]: Without dead ends: 161 [2022-01-31 20:53:40,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 20:53:40,559 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 155 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:40,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 146 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 20:53:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-31 20:53:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 90. [2022-01-31 20:53:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 20:53:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-01-31 20:53:40,585 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 141 [2022-01-31 20:53:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:40,586 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-01-31 20:53:40,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 20:53:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-01-31 20:53:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-31 20:53:40,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:40,587 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:40,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 20:53:40,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash -279761900, now seen corresponding path program 17 times [2022-01-31 20:53:40,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:40,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937814031] [2022-01-31 20:53:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:40,590 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:40,590 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:40,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:40,592 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 20:53:40,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:40,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937814031] [2022-01-31 20:53:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [937814031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:40,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 20:53:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844739773] [2022-01-31 20:53:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:40,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 20:53:40,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 20:53:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-01-31 20:53:40,957 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 20:53:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:42,388 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2022-01-31 20:53:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 20:53:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2022-01-31 20:53:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:42,390 INFO L225 Difference]: With dead ends: 180 [2022-01-31 20:53:42,390 INFO L226 Difference]: Without dead ends: 169 [2022-01-31 20:53:42,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 20:53:42,391 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 183 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:42,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 104 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 20:53:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-31 20:53:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 94. [2022-01-31 20:53:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 20:53:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2022-01-31 20:53:42,417 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 149 [2022-01-31 20:53:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2022-01-31 20:53:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 20:53:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2022-01-31 20:53:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-31 20:53:42,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:42,419 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:42,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 20:53:42,419 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1527768977, now seen corresponding path program 18 times [2022-01-31 20:53:42,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457630513] [2022-01-31 20:53:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:42,422 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:42,422 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:42,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:42,424 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 20:53:42,829 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:42,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457630513] [2022-01-31 20:53:42,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [457630513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:42,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:42,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 20:53:42,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480311426] [2022-01-31 20:53:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:42,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 20:53:42,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 20:53:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-01-31 20:53:42,830 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 20:53:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:44,429 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2022-01-31 20:53:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 20:53:44,430 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2022-01-31 20:53:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:44,431 INFO L225 Difference]: With dead ends: 188 [2022-01-31 20:53:44,431 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 20:53:44,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 20:53:44,432 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:44,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 77 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 20:53:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 20:53:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2022-01-31 20:53:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 20:53:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2022-01-31 20:53:44,457 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 157 [2022-01-31 20:53:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:44,457 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2022-01-31 20:53:44,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 20:53:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2022-01-31 20:53:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-31 20:53:44,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:44,459 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 20:53:44,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash -919307830, now seen corresponding path program 19 times [2022-01-31 20:53:44,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799778948] [2022-01-31 20:53:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:44,462 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:44,462 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:44,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:44,464 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 20:53:44,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:44,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799778948] [2022-01-31 20:53:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1799778948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:44,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 20:53:44,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998246240] [2022-01-31 20:53:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:44,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 20:53:44,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 20:53:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-01-31 20:53:44,857 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 20:53:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:46,594 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2022-01-31 20:53:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 20:53:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2022-01-31 20:53:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:46,596 INFO L225 Difference]: With dead ends: 196 [2022-01-31 20:53:46,596 INFO L226 Difference]: Without dead ends: 185 [2022-01-31 20:53:46,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 20:53:46,597 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 201 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:46,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 115 Invalid, 3574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 20:53:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-31 20:53:46,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 102. [2022-01-31 20:53:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 20:53:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2022-01-31 20:53:46,624 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 165 [2022-01-31 20:53:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:46,624 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2022-01-31 20:53:46,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 20:53:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2022-01-31 20:53:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-31 20:53:46,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:46,626 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:46,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 20:53:46,626 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 198922277, now seen corresponding path program 20 times [2022-01-31 20:53:46,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:46,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470979151] [2022-01-31 20:53:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:46,629 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:46,629 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:46,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:46,630 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:53:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 20:53:47,082 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:47,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470979151] [2022-01-31 20:53:47,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [470979151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:47,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:47,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 20:53:47,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993040205] [2022-01-31 20:53:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:47,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 20:53:47,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:47,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 20:53:47,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-01-31 20:53:47,085 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 20:53:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:48,868 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2022-01-31 20:53:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 20:53:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2022-01-31 20:53:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:48,870 INFO L225 Difference]: With dead ends: 204 [2022-01-31 20:53:48,870 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 20:53:48,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 20:53:48,871 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 221 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:48,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 93 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 3424 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 20:53:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 20:53:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 106. [2022-01-31 20:53:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 20:53:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-01-31 20:53:48,895 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 173 [2022-01-31 20:53:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:48,895 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-01-31 20:53:48,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 20:53:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-01-31 20:53:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-31 20:53:48,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:48,897 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:48,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 20:53:48,897 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 832543616, now seen corresponding path program 21 times [2022-01-31 20:53:48,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249839628] [2022-01-31 20:53:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:48,900 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:48,900 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:48,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:48,901 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:53:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:53:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 20:53:49,329 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249839628] [2022-01-31 20:53:49,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249839628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:49,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:49,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 20:53:49,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114036423] [2022-01-31 20:53:49,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:49,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 20:53:49,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 20:53:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-01-31 20:53:49,331 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 20:53:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:51,599 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2022-01-31 20:53:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 20:53:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2022-01-31 20:53:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:51,602 INFO L225 Difference]: With dead ends: 212 [2022-01-31 20:53:51,602 INFO L226 Difference]: Without dead ends: 201 [2022-01-31 20:53:51,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 20:53:51,603 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 193 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:51,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 191 Invalid, 4990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4768 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:53:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-31 20:53:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 110. [2022-01-31 20:53:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 20:53:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2022-01-31 20:53:51,628 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 181 [2022-01-31 20:53:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:51,628 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2022-01-31 20:53:51,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 20:53:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2022-01-31 20:53:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-31 20:53:51,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:51,630 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:51,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 20:53:51,630 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 339499995, now seen corresponding path program 22 times [2022-01-31 20:53:51,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:51,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068169266] [2022-01-31 20:53:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:51,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:51,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:51,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:51,634 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:53:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:53:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:53:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 20:53:52,129 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:52,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068169266] [2022-01-31 20:53:52,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2068169266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:52,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:52,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 20:53:52,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45540984] [2022-01-31 20:53:52,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 20:53:52,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 20:53:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-01-31 20:53:52,147 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 20:53:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:54,234 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2022-01-31 20:53:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 20:53:54,235 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2022-01-31 20:53:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:54,237 INFO L225 Difference]: With dead ends: 220 [2022-01-31 20:53:54,237 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 20:53:54,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 20:53:54,238 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 245 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:54,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 89 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 4004 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 20:53:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 20:53:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 114. [2022-01-31 20:53:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 26 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 20:53:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-01-31 20:53:54,266 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 189 [2022-01-31 20:53:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:54,266 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-01-31 20:53:54,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 20:53:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-01-31 20:53:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-31 20:53:54,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:54,268 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:54,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 20:53:54,268 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:54,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1569943242, now seen corresponding path program 23 times [2022-01-31 20:53:54,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:54,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483287987] [2022-01-31 20:53:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:54,271 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:54,271 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:54,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:54,272 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:53:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:53:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:53:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:53:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 20:53:54,740 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483287987] [2022-01-31 20:53:54,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [483287987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:54,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:54,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 20:53:54,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221081299] [2022-01-31 20:53:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:54,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 20:53:54,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 20:53:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-31 20:53:54,744 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 20:53:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:53:57,149 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2022-01-31 20:53:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 20:53:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2022-01-31 20:53:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:53:57,151 INFO L225 Difference]: With dead ends: 228 [2022-01-31 20:53:57,151 INFO L226 Difference]: Without dead ends: 217 [2022-01-31 20:53:57,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 20:53:57,152 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 227 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5167 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:53:57,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 162 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5167 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 20:53:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-31 20:53:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 118. [2022-01-31 20:53:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 20:53:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2022-01-31 20:53:57,185 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 197 [2022-01-31 20:53:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:53:57,185 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2022-01-31 20:53:57,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 20:53:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2022-01-31 20:53:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-31 20:53:57,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:53:57,187 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:53:57,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 20:53:57,187 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:53:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:53:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -538231919, now seen corresponding path program 24 times [2022-01-31 20:53:57,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:53:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676213513] [2022-01-31 20:53:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:53:57,190 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:53:57,190 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:53:57,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:53:57,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:53:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:53:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:53:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:53:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:53:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:53:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:53:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:53:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:53:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:53:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:53:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:53:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:53:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:53:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:53:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:53:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:53:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:53:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:53:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:53:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:53:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:53:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:53:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:53:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:53:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:53:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:53:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 20:53:57,682 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:53:57,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676213513] [2022-01-31 20:53:57,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [676213513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:53:57,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:53:57,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 20:53:57,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917402021] [2022-01-31 20:53:57,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:53:57,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 20:53:57,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:53:57,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 20:53:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-31 20:53:57,685 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 20:54:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:00,532 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2022-01-31 20:54:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 20:54:00,532 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2022-01-31 20:54:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:00,533 INFO L225 Difference]: With dead ends: 236 [2022-01-31 20:54:00,533 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 20:54:00,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 20:54:00,534 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 217 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6166 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 6418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 6166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:00,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 215 Invalid, 6418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 6166 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 20:54:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 20:54:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 122. [2022-01-31 20:54:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 20:54:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2022-01-31 20:54:00,568 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 205 [2022-01-31 20:54:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:00,569 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2022-01-31 20:54:00,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 20:54:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2022-01-31 20:54:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-31 20:54:00,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:00,570 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:00,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 20:54:00,571 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -445424916, now seen corresponding path program 25 times [2022-01-31 20:54:00,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:00,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120746417] [2022-01-31 20:54:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:00,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:00,576 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:00,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:00,578 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 20:54:01,108 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:01,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120746417] [2022-01-31 20:54:01,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1120746417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:01,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:01,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 20:54:01,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859147577] [2022-01-31 20:54:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:01,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 20:54:01,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 20:54:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2022-01-31 20:54:01,110 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 20:54:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:03,971 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2022-01-31 20:54:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 20:54:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2022-01-31 20:54:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:03,973 INFO L225 Difference]: With dead ends: 244 [2022-01-31 20:54:03,973 INFO L226 Difference]: Without dead ends: 233 [2022-01-31 20:54:03,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2736, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 20:54:03,975 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 247 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 6285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:03,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 168 Invalid, 6285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 20:54:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-31 20:54:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 126. [2022-01-31 20:54:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 20:54:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2022-01-31 20:54:04,023 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 213 [2022-01-31 20:54:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:04,023 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2022-01-31 20:54:04,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 20:54:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2022-01-31 20:54:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-31 20:54:04,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:04,024 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:04,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 20:54:04,025 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:04,025 INFO L85 PathProgramCache]: Analyzing trace with hash -524292281, now seen corresponding path program 26 times [2022-01-31 20:54:04,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099238944] [2022-01-31 20:54:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:04,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:04,028 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:04,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:04,029 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 20:54:04,623 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:04,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099238944] [2022-01-31 20:54:04,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2099238944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:04,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:04,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 20:54:04,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422728676] [2022-01-31 20:54:04,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:04,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 20:54:04,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:04,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 20:54:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-01-31 20:54:04,625 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 20:54:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:07,512 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2022-01-31 20:54:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 20:54:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2022-01-31 20:54:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:07,514 INFO L225 Difference]: With dead ends: 252 [2022-01-31 20:54:07,514 INFO L226 Difference]: Without dead ends: 241 [2022-01-31 20:54:07,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2949, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 20:54:07,515 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 263 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6253 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 6253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:07,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 156 Invalid, 6555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 6253 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 20:54:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-31 20:54:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 130. [2022-01-31 20:54:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 30 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 20:54:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2022-01-31 20:54:07,566 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 221 [2022-01-31 20:54:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2022-01-31 20:54:07,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 20:54:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2022-01-31 20:54:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-31 20:54:07,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:07,568 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:07,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 20:54:07,568 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash 344717474, now seen corresponding path program 27 times [2022-01-31 20:54:07,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:07,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938437482] [2022-01-31 20:54:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:07,571 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:07,571 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:07,573 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 20:54:08,178 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938437482] [2022-01-31 20:54:08,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [938437482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:08,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:08,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 20:54:08,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321592201] [2022-01-31 20:54:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:08,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 20:54:08,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 20:54:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-01-31 20:54:08,179 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 20:54:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:11,637 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2022-01-31 20:54:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 20:54:11,638 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2022-01-31 20:54:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:11,639 INFO L225 Difference]: With dead ends: 260 [2022-01-31 20:54:11,639 INFO L226 Difference]: Without dead ends: 249 [2022-01-31 20:54:11,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=3170, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 20:54:11,641 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 241 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7744 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 8026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 7744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:11,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 239 Invalid, 8026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 7744 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 20:54:11,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-31 20:54:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 134. [2022-01-31 20:54:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 31 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 20:54:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-01-31 20:54:11,689 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 229 [2022-01-31 20:54:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:11,690 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-01-31 20:54:11,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 20:54:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-01-31 20:54:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-31 20:54:11,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:11,691 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 20:54:11,691 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -661489923, now seen corresponding path program 28 times [2022-01-31 20:54:11,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:11,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434142303] [2022-01-31 20:54:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:11,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:11,695 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:11,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:11,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 20:54:12,320 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434142303] [2022-01-31 20:54:12,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [434142303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:12,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:12,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 20:54:12,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711027066] [2022-01-31 20:54:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:12,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 20:54:12,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 20:54:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2022-01-31 20:54:12,322 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 20:54:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:15,965 INFO L93 Difference]: Finished difference Result 268 states and 328 transitions. [2022-01-31 20:54:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 20:54:15,966 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2022-01-31 20:54:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:15,967 INFO L225 Difference]: With dead ends: 268 [2022-01-31 20:54:15,967 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 20:54:15,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=3399, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 20:54:15,969 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 259 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 7975 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 8277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 7975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:15,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 222 Invalid, 8277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 7975 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 20:54:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 20:54:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 138. [2022-01-31 20:54:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 32 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 20:54:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2022-01-31 20:54:16,005 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 237 [2022-01-31 20:54:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:16,006 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2022-01-31 20:54:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 20:54:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2022-01-31 20:54:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-31 20:54:16,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:16,007 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:16,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 20:54:16,008 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1718719912, now seen corresponding path program 29 times [2022-01-31 20:54:16,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35671632] [2022-01-31 20:54:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:16,011 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:16,011 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:16,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:16,012 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 20:54:16,714 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:16,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35671632] [2022-01-31 20:54:16,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [35671632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:16,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:16,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 20:54:16,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895511135] [2022-01-31 20:54:16,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:16,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 20:54:16,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:16,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 20:54:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 20:54:16,716 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 20:54:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:20,280 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2022-01-31 20:54:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 20:54:20,280 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2022-01-31 20:54:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:20,281 INFO L225 Difference]: With dead ends: 276 [2022-01-31 20:54:20,282 INFO L226 Difference]: Without dead ends: 265 [2022-01-31 20:54:20,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3636, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 20:54:20,283 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 291 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7723 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 8059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 7723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:20,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 170 Invalid, 8059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 7723 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 20:54:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-31 20:54:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 142. [2022-01-31 20:54:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 33 states have call successors, (33), 4 states have call predecessors, (33), 3 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 20:54:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2022-01-31 20:54:20,337 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 245 [2022-01-31 20:54:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:20,338 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2022-01-31 20:54:20,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 20:54:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2022-01-31 20:54:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-31 20:54:20,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:20,339 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:20,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 20:54:20,340 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash -650456397, now seen corresponding path program 30 times [2022-01-31 20:54:20,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:20,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324762454] [2022-01-31 20:54:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:20,343 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:20,343 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:20,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:20,344 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 20:54:21,016 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:21,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324762454] [2022-01-31 20:54:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [324762454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:21,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:21,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 20:54:21,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373713552] [2022-01-31 20:54:21,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:21,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 20:54:21,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 20:54:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 20:54:21,018 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 20:54:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:25,254 INFO L93 Difference]: Finished difference Result 284 states and 348 transitions. [2022-01-31 20:54:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 20:54:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2022-01-31 20:54:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:25,255 INFO L225 Difference]: With dead ends: 284 [2022-01-31 20:54:25,255 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 20:54:25,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=279, Invalid=3881, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 20:54:25,257 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 283 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 8863 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 9193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 8863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:25,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 218 Invalid, 9193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 8863 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-31 20:54:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 20:54:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 146. [2022-01-31 20:54:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 34 states have call successors, (34), 4 states have call predecessors, (34), 3 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:54:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2022-01-31 20:54:25,307 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 253 [2022-01-31 20:54:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:25,307 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2022-01-31 20:54:25,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 20:54:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2022-01-31 20:54:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-31 20:54:25,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:25,309 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:25,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 20:54:25,309 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 777170958, now seen corresponding path program 31 times [2022-01-31 20:54:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177399424] [2022-01-31 20:54:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:25,313 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:25,313 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:25,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:25,314 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 20:54:26,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177399424] [2022-01-31 20:54:26,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [177399424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:26,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:26,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 20:54:26,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936087181] [2022-01-31 20:54:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:26,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 20:54:26,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 20:54:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 20:54:26,079 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 20:54:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:29,886 INFO L93 Difference]: Finished difference Result 292 states and 358 transitions. [2022-01-31 20:54:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 20:54:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2022-01-31 20:54:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:29,887 INFO L225 Difference]: With dead ends: 292 [2022-01-31 20:54:29,888 INFO L226 Difference]: Without dead ends: 281 [2022-01-31 20:54:29,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=4134, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 20:54:29,889 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 327 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 8157 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 8533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 8157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:29,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 136 Invalid, 8533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 8157 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 20:54:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-31 20:54:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 150. [2022-01-31 20:54:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 35 states have call successors, (35), 4 states have call predecessors, (35), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:54:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2022-01-31 20:54:29,931 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 261 [2022-01-31 20:54:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:29,931 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2022-01-31 20:54:29,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 20:54:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2022-01-31 20:54:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-31 20:54:29,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:29,932 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:29,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 20:54:29,932 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1150354025, now seen corresponding path program 32 times [2022-01-31 20:54:29,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664940006] [2022-01-31 20:54:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:29,935 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:29,935 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:29,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:29,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:54:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 20:54:30,699 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:30,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664940006] [2022-01-31 20:54:30,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1664940006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:30,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:30,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 20:54:30,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521790432] [2022-01-31 20:54:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:30,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 20:54:30,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 20:54:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 20:54:30,701 INFO L87 Difference]: Start difference. First operand 150 states and 182 transitions. Second operand has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:54:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:35,273 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-01-31 20:54:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 20:54:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2022-01-31 20:54:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:35,274 INFO L225 Difference]: With dead ends: 300 [2022-01-31 20:54:35,274 INFO L226 Difference]: Without dead ends: 289 [2022-01-31 20:54:35,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=297, Invalid=4395, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 20:54:35,275 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 299 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10099 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 10449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 10099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:35,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 234 Invalid, 10449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 10099 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-31 20:54:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-31 20:54:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 154. [2022-01-31 20:54:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 36 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 20:54:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 187 transitions. [2022-01-31 20:54:35,339 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 187 transitions. Word has length 269 [2022-01-31 20:54:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:35,339 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 187 transitions. [2022-01-31 20:54:35,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 20:54:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 187 transitions. [2022-01-31 20:54:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-31 20:54:35,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:35,341 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:35,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 20:54:35,341 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash -592393788, now seen corresponding path program 33 times [2022-01-31 20:54:35,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:35,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692034000] [2022-01-31 20:54:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:35,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:35,345 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:35,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:35,346 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:54:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:54:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 20:54:36,167 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:36,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692034000] [2022-01-31 20:54:36,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692034000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:36,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:36,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 20:54:36,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808097393] [2022-01-31 20:54:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:36,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 20:54:36,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 20:54:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 20:54:36,169 INFO L87 Difference]: Start difference. First operand 154 states and 187 transitions. Second operand has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:54:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:41,064 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2022-01-31 20:54:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 20:54:41,065 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2022-01-31 20:54:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:41,066 INFO L225 Difference]: With dead ends: 308 [2022-01-31 20:54:41,066 INFO L226 Difference]: Without dead ends: 297 [2022-01-31 20:54:41,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=306, Invalid=4664, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 20:54:41,067 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 305 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10824 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 11182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 10824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:41,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 247 Invalid, 11182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 10824 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 20:54:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-31 20:54:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 158. [2022-01-31 20:54:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 37 states have call successors, (37), 4 states have call predecessors, (37), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 20:54:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 192 transitions. [2022-01-31 20:54:41,129 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 192 transitions. Word has length 277 [2022-01-31 20:54:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:41,129 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 192 transitions. [2022-01-31 20:54:41,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 20:54:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 192 transitions. [2022-01-31 20:54:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-31 20:54:41,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:41,131 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:41,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 20:54:41,131 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -865270241, now seen corresponding path program 34 times [2022-01-31 20:54:41,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:41,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101769134] [2022-01-31 20:54:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:41,135 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:41,135 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:41,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:41,136 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:54:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:54:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:54:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 20:54:41,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101769134] [2022-01-31 20:54:41,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [101769134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:41,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:41,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 20:54:41,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47752221] [2022-01-31 20:54:41,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:41,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 20:54:41,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:41,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 20:54:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 20:54:41,970 INFO L87 Difference]: Start difference. First operand 158 states and 192 transitions. Second operand has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 20:54:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:46,674 INFO L93 Difference]: Finished difference Result 316 states and 388 transitions. [2022-01-31 20:54:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 20:54:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2022-01-31 20:54:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:46,675 INFO L225 Difference]: With dead ends: 316 [2022-01-31 20:54:46,675 INFO L226 Difference]: Without dead ends: 305 [2022-01-31 20:54:46,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=4941, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 20:54:46,676 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 353 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9914 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 10322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 9914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:46,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 155 Invalid, 10322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 9914 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-31 20:54:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-01-31 20:54:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 162. [2022-01-31 20:54:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 38 states have call successors, (38), 4 states have call predecessors, (38), 3 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 20:54:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2022-01-31 20:54:46,750 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 285 [2022-01-31 20:54:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:46,751 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2022-01-31 20:54:46,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 20:54:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2022-01-31 20:54:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-01-31 20:54:46,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:46,752 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:46,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 20:54:46,753 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -25118854, now seen corresponding path program 35 times [2022-01-31 20:54:46,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:46,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023266144] [2022-01-31 20:54:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:46,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:46,757 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:46,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:46,758 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:54:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:54:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:54:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:54:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 20:54:47,639 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023266144] [2022-01-31 20:54:47,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2023266144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:47,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:47,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 20:54:47,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801078878] [2022-01-31 20:54:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:47,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 20:54:47,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 20:54:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 20:54:47,641 INFO L87 Difference]: Start difference. First operand 162 states and 197 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 20:54:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:52,956 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2022-01-31 20:54:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 20:54:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2022-01-31 20:54:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:52,958 INFO L225 Difference]: With dead ends: 324 [2022-01-31 20:54:52,958 INFO L226 Difference]: Without dead ends: 313 [2022-01-31 20:54:52,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=324, Invalid=5226, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 20:54:52,959 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 331 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 11779 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 12167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 11779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:52,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 238 Invalid, 12167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 11779 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-31 20:54:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-31 20:54:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 166. [2022-01-31 20:54:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 39 states have call successors, (39), 4 states have call predecessors, (39), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 20:54:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2022-01-31 20:54:53,018 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 293 [2022-01-31 20:54:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:53,018 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2022-01-31 20:54:53,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 20:54:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2022-01-31 20:54:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-01-31 20:54:53,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:53,020 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:53,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 20:54:53,020 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:53,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1923538389, now seen corresponding path program 36 times [2022-01-31 20:54:53,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:53,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763169901] [2022-01-31 20:54:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:53,024 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:53,024 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:53,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:53,025 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:54:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:54:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:54:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:54:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:54:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:54:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:54:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 20:54:53,878 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:54:53,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763169901] [2022-01-31 20:54:53,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1763169901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:54:53,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:54:53,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 20:54:53,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683222057] [2022-01-31 20:54:53,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:54:53,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 20:54:53,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:54:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 20:54:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 20:54:53,880 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 20:54:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:54:59,059 INFO L93 Difference]: Finished difference Result 332 states and 408 transitions. [2022-01-31 20:54:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 20:54:59,060 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2022-01-31 20:54:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:54:59,062 INFO L225 Difference]: With dead ends: 332 [2022-01-31 20:54:59,062 INFO L226 Difference]: Without dead ends: 321 [2022-01-31 20:54:59,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=333, Invalid=5519, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 20:54:59,063 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 373 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11068 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 11500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 11068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:54:59,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 161 Invalid, 11500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 11068 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 20:54:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-31 20:54:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 170. [2022-01-31 20:54:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 40 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 20:54:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2022-01-31 20:54:59,133 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 301 [2022-01-31 20:54:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:54:59,134 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2022-01-31 20:54:59,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 20:54:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2022-01-31 20:54:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-31 20:54:59,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:54:59,136 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:54:59,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 20:54:59,136 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:54:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:54:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1033533744, now seen corresponding path program 37 times [2022-01-31 20:54:59,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:54:59,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741758091] [2022-01-31 20:54:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:54:59,140 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:54:59,140 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:54:59,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:54:59,142 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:54:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:54:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:54:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:54:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:54:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:54:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:54:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:54:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:54:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:54:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:54:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:54:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:54:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:54:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:54:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:54:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:54:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:54:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:54:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:54:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:54:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:54:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:54:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:54:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:54:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:54:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:54:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:54:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:54:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:54:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:54:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:54:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 20:55:00,019 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741758091] [2022-01-31 20:55:00,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1741758091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:00,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:00,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 20:55:00,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146387154] [2022-01-31 20:55:00,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:00,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 20:55:00,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 20:55:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 20:55:00,021 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 20:55:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:06,192 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2022-01-31 20:55:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 20:55:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2022-01-31 20:55:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:06,193 INFO L225 Difference]: With dead ends: 340 [2022-01-31 20:55:06,193 INFO L226 Difference]: Without dead ends: 329 [2022-01-31 20:55:06,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=342, Invalid=5820, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 20:55:06,195 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 331 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 13879 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 14271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 13879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:06,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 294 Invalid, 14271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 13879 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-31 20:55:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-31 20:55:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 174. [2022-01-31 20:55:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 41 states have call successors, (41), 4 states have call predecessors, (41), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:55:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2022-01-31 20:55:06,263 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 309 [2022-01-31 20:55:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:06,263 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2022-01-31 20:55:06,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 20:55:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2022-01-31 20:55:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-01-31 20:55:06,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:06,265 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:06,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 20:55:06,265 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1995011701, now seen corresponding path program 38 times [2022-01-31 20:55:06,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:06,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607302451] [2022-01-31 20:55:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:06,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:06,269 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:06,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:06,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 20:55:07,186 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:07,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607302451] [2022-01-31 20:55:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [607302451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:07,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:07,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 20:55:07,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326822961] [2022-01-31 20:55:07,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:07,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 20:55:07,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 20:55:07,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 20:55:07,188 INFO L87 Difference]: Start difference. First operand 174 states and 212 transitions. Second operand has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 20:55:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:13,453 INFO L93 Difference]: Finished difference Result 348 states and 428 transitions. [2022-01-31 20:55:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 20:55:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2022-01-31 20:55:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:13,455 INFO L225 Difference]: With dead ends: 348 [2022-01-31 20:55:13,455 INFO L226 Difference]: Without dead ends: 337 [2022-01-31 20:55:13,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=351, Invalid=6129, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 20:55:13,456 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 353 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 14026 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 14442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 14026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:13,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 267 Invalid, 14442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 14026 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-31 20:55:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-31 20:55:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 178. [2022-01-31 20:55:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 42 states have call successors, (42), 4 states have call predecessors, (42), 3 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:55:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2022-01-31 20:55:13,541 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 317 [2022-01-31 20:55:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2022-01-31 20:55:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 20:55:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2022-01-31 20:55:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-01-31 20:55:13,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:13,544 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:13,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 20:55:13,544 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1814688026, now seen corresponding path program 39 times [2022-01-31 20:55:13,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:13,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199364042] [2022-01-31 20:55:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:13,548 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:13,548 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:13,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:13,550 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 20:55:14,551 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:14,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199364042] [2022-01-31 20:55:14,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [199364042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:14,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:14,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 20:55:14,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268674638] [2022-01-31 20:55:14,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:14,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 20:55:14,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 20:55:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 20:55:14,554 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:55:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:21,015 INFO L93 Difference]: Finished difference Result 356 states and 438 transitions. [2022-01-31 20:55:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 20:55:21,015 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2022-01-31 20:55:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:21,017 INFO L225 Difference]: With dead ends: 356 [2022-01-31 20:55:21,017 INFO L226 Difference]: Without dead ends: 345 [2022-01-31 20:55:21,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=360, Invalid=6446, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 20:55:21,018 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 375 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14165 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 14605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 14165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:21,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 240 Invalid, 14605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 14165 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-31 20:55:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-31 20:55:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 182. [2022-01-31 20:55:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 43 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:55:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2022-01-31 20:55:21,084 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 325 [2022-01-31 20:55:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:21,084 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2022-01-31 20:55:21,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 20:55:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2022-01-31 20:55:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-01-31 20:55:21,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:21,086 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:21,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 20:55:21,086 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1315698367, now seen corresponding path program 40 times [2022-01-31 20:55:21,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:21,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218953920] [2022-01-31 20:55:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:21,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:21,089 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:21,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:21,091 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:55:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 20:55:22,171 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218953920] [2022-01-31 20:55:22,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1218953920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:22,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:22,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 20:55:22,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004354464] [2022-01-31 20:55:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:22,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 20:55:22,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 20:55:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 20:55:22,173 INFO L87 Difference]: Start difference. First operand 182 states and 222 transitions. Second operand has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:55:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:29,134 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2022-01-31 20:55:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 20:55:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2022-01-31 20:55:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:29,136 INFO L225 Difference]: With dead ends: 364 [2022-01-31 20:55:29,136 INFO L226 Difference]: Without dead ends: 353 [2022-01-31 20:55:29,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=369, Invalid=6771, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 20:55:29,137 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 373 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 15388 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 15828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 15388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:29,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 273 Invalid, 15828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 15388 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-31 20:55:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-31 20:55:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 186. [2022-01-31 20:55:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 44 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 20:55:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2022-01-31 20:55:29,210 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 333 [2022-01-31 20:55:29,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:29,210 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2022-01-31 20:55:29,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 20:55:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2022-01-31 20:55:29,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-01-31 20:55:29,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:29,212 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:29,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 20:55:29,212 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1259042972, now seen corresponding path program 41 times [2022-01-31 20:55:29,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:29,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552392929] [2022-01-31 20:55:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:29,215 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:29,215 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:29,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:29,217 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:55:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:55:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 20:55:30,216 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:30,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552392929] [2022-01-31 20:55:30,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1552392929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:30,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:30,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 20:55:30,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521557462] [2022-01-31 20:55:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:30,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 20:55:30,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 20:55:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 20:55:30,218 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:55:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:36,981 INFO L93 Difference]: Finished difference Result 372 states and 458 transitions. [2022-01-31 20:55:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 20:55:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2022-01-31 20:55:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:36,983 INFO L225 Difference]: With dead ends: 372 [2022-01-31 20:55:36,983 INFO L226 Difference]: Without dead ends: 361 [2022-01-31 20:55:36,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=378, Invalid=7104, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 20:55:36,984 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 419 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14419 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 14907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 14419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:36,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 186 Invalid, 14907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 14419 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-31 20:55:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-31 20:55:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 190. [2022-01-31 20:55:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 45 states have call successors, (45), 4 states have call predecessors, (45), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 20:55:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2022-01-31 20:55:37,063 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 341 [2022-01-31 20:55:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:37,064 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2022-01-31 20:55:37,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 20:55:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2022-01-31 20:55:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-01-31 20:55:37,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:37,066 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:37,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 20:55:37,066 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -570991369, now seen corresponding path program 42 times [2022-01-31 20:55:37,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:37,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803856711] [2022-01-31 20:55:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:37,070 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:37,070 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:37,072 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:55:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:55:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:55:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 20:55:38,104 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803856711] [2022-01-31 20:55:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [803856711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:38,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:38,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 20:55:38,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968186616] [2022-01-31 20:55:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:38,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 20:55:38,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 20:55:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 20:55:38,107 INFO L87 Difference]: Start difference. First operand 190 states and 232 transitions. Second operand has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 20:55:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:45,501 INFO L93 Difference]: Finished difference Result 380 states and 468 transitions. [2022-01-31 20:55:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 20:55:45,502 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2022-01-31 20:55:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:45,504 INFO L225 Difference]: With dead ends: 380 [2022-01-31 20:55:45,504 INFO L226 Difference]: Without dead ends: 369 [2022-01-31 20:55:45,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=387, Invalid=7445, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 20:55:45,505 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 403 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 16339 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 16813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 16339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:45,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 254 Invalid, 16813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 16339 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-31 20:55:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-31 20:55:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 194. [2022-01-31 20:55:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 46 states have call successors, (46), 4 states have call predecessors, (46), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 20:55:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2022-01-31 20:55:45,591 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 349 [2022-01-31 20:55:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:45,591 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2022-01-31 20:55:45,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 20:55:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2022-01-31 20:55:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-01-31 20:55:45,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:45,593 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:45,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 20:55:45,594 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash -49105326, now seen corresponding path program 43 times [2022-01-31 20:55:45,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:45,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730199595] [2022-01-31 20:55:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:45,605 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:45,605 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:45,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:45,607 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:55:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:55:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:55:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:55:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 20:55:46,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:46,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730199595] [2022-01-31 20:55:46,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [730199595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:46,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:46,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 20:55:46,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198730808] [2022-01-31 20:55:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:46,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 20:55:46,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 20:55:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 20:55:46,655 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 20:55:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:55:54,396 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2022-01-31 20:55:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 20:55:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2022-01-31 20:55:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:55:54,398 INFO L225 Difference]: With dead ends: 388 [2022-01-31 20:55:54,398 INFO L226 Difference]: Without dead ends: 377 [2022-01-31 20:55:54,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=396, Invalid=7794, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 20:55:54,399 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 417 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 16872 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 17362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 16872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:55:54,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 247 Invalid, 17362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 16872 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-31 20:55:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-31 20:55:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 198. [2022-01-31 20:55:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 47 states have call successors, (47), 4 states have call predecessors, (47), 3 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 20:55:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2022-01-31 20:55:54,479 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 357 [2022-01-31 20:55:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:55:54,479 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2022-01-31 20:55:54,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 20:55:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2022-01-31 20:55:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-01-31 20:55:54,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:55:54,481 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:55:54,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 20:55:54,481 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:55:54,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:55:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1343784109, now seen corresponding path program 44 times [2022-01-31 20:55:54,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:55:54,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439088115] [2022-01-31 20:55:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:55:54,486 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:55:54,487 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:55:54,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:55:54,489 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:55:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:55:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:55:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:55:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:55:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:55:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:55:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:55:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:55:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:55:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:55:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:55:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:55:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:55:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:55:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:55:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:55:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:55:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:55:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:55:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:55:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:55:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:55:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:55:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:55:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:55:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:55:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:55:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:55:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:55:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:55:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:55:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:55:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:55:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:55:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:55:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:55:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:55:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:55:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:55:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:55:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:55:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:55:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:55:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:55:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:55:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:55:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 20:55:55,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:55:55,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439088115] [2022-01-31 20:55:55,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1439088115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:55:55,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:55:55,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 20:55:55,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035950960] [2022-01-31 20:55:55,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:55:55,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 20:55:55,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:55:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 20:55:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 20:55:55,644 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 20:56:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:03,757 INFO L93 Difference]: Finished difference Result 396 states and 488 transitions. [2022-01-31 20:56:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 20:56:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2022-01-31 20:56:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:03,759 INFO L225 Difference]: With dead ends: 396 [2022-01-31 20:56:03,759 INFO L226 Difference]: Without dead ends: 385 [2022-01-31 20:56:03,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=405, Invalid=8151, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 20:56:03,760 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 425 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 17710 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 18210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 17710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:03,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 255 Invalid, 18210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 17710 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-31 20:56:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-31 20:56:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 202. [2022-01-31 20:56:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 48 states have call successors, (48), 4 states have call predecessors, (48), 3 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 20:56:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2022-01-31 20:56:03,843 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 365 [2022-01-31 20:56:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:03,843 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2022-01-31 20:56:03,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 20:56:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2022-01-31 20:56:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-01-31 20:56:03,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:03,845 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:03,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 20:56:03,846 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1815885816, now seen corresponding path program 45 times [2022-01-31 20:56:03,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:03,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74999765] [2022-01-31 20:56:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:03,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:03,852 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:03,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:03,854 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:56:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:56:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:56:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:56:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:56:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:56:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:56:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:56:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:56:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:56:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:56:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:56:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:56:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:56:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:56:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:56:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:56:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:56:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:56:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:56:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:56:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:56:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:56:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:56:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:56:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:56:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:56:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:56:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:56:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:56:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:56:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:56:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:56:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:56:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:56:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:56:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:56:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:56:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:56:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:56:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:56:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:56:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:56:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:56:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:56:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:56:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 20:56:05,013 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:56:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74999765] [2022-01-31 20:56:05,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [74999765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:56:05,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:56:05,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 20:56:05,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855584336] [2022-01-31 20:56:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:56:05,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 20:56:05,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:56:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 20:56:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 20:56:05,015 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 20:56:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:14,090 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2022-01-31 20:56:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 20:56:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2022-01-31 20:56:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:14,092 INFO L225 Difference]: With dead ends: 404 [2022-01-31 20:56:14,092 INFO L226 Difference]: Without dead ends: 393 [2022-01-31 20:56:14,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=414, Invalid=8516, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 20:56:14,092 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 401 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 20184 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 20662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 20184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:14,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 343 Invalid, 20662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 20184 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-31 20:56:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-31 20:56:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 206. [2022-01-31 20:56:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 153 states have internal predecessors, (155), 49 states have call successors, (49), 4 states have call predecessors, (49), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 20:56:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 252 transitions. [2022-01-31 20:56:14,175 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 252 transitions. Word has length 373 [2022-01-31 20:56:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:14,176 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 252 transitions. [2022-01-31 20:56:14,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 20:56:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 252 transitions. [2022-01-31 20:56:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-01-31 20:56:14,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:14,178 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:14,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 20:56:14,178 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1714454429, now seen corresponding path program 46 times [2022-01-31 20:56:14,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:14,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295965555] [2022-01-31 20:56:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:14,181 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:14,181 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:14,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:14,184 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:56:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:56:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:56:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:56:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:56:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:56:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:56:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:56:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:56:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:56:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:56:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:56:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:56:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:56:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:56:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:56:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:56:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:56:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:56:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:56:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:56:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:56:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:56:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:56:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:56:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:56:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:56:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:56:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:56:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:56:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:56:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:56:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:56:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:56:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:56:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:56:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:56:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:56:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:56:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:56:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:56:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:56:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:56:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:56:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:56:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:56:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:56:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 20:56:15,330 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:56:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295965555] [2022-01-31 20:56:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [295965555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:56:15,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:56:15,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 20:56:15,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564968361] [2022-01-31 20:56:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:56:15,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 20:56:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:56:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 20:56:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 20:56:15,332 INFO L87 Difference]: Start difference. First operand 206 states and 252 transitions. Second operand has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 20:56:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:24,975 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2022-01-31 20:56:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 20:56:24,975 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2022-01-31 20:56:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:24,977 INFO L225 Difference]: With dead ends: 412 [2022-01-31 20:56:24,977 INFO L226 Difference]: Without dead ends: 401 [2022-01-31 20:56:24,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=423, Invalid=8889, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 20:56:24,978 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 399 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 21609 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 22087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 21609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:24,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 376 Invalid, 22087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 21609 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-01-31 20:56:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-31 20:56:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 210. [2022-01-31 20:56:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 50 states have call successors, (50), 4 states have call predecessors, (50), 3 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 20:56:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 257 transitions. [2022-01-31 20:56:25,106 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 257 transitions. Word has length 381 [2022-01-31 20:56:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:25,106 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 257 transitions. [2022-01-31 20:56:25,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 20:56:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 257 transitions. [2022-01-31 20:56:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-01-31 20:56:25,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:25,108 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:25,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 20:56:25,109 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1224125886, now seen corresponding path program 47 times [2022-01-31 20:56:25,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061196008] [2022-01-31 20:56:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:25,116 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:25,116 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:25,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:25,118 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:56:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:56:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:56:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:56:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:56:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:56:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:56:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:56:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:56:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:56:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:56:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:56:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:56:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:56:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:56:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:56:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:56:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:56:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:56:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:56:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:56:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:56:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:56:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:56:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:56:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:56:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:56:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:56:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:56:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:56:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:56:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:56:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:56:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:56:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:56:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:56:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:56:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:56:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:56:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:56:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:56:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:56:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:56:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:56:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:56:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:56:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:56:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:56:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 20:56:26,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:56:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061196008] [2022-01-31 20:56:26,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061196008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:56:26,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:56:26,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 20:56:26,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497887712] [2022-01-31 20:56:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:56:26,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 20:56:26,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:56:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 20:56:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 20:56:26,350 INFO L87 Difference]: Start difference. First operand 210 states and 257 transitions. Second operand has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 20:56:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:35,815 INFO L93 Difference]: Finished difference Result 420 states and 518 transitions. [2022-01-31 20:56:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 20:56:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2022-01-31 20:56:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:35,817 INFO L225 Difference]: With dead ends: 420 [2022-01-31 20:56:35,817 INFO L226 Difference]: Without dead ends: 409 [2022-01-31 20:56:35,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=432, Invalid=9270, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 20:56:35,819 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 441 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 20764 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 21286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 20764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:35,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 299 Invalid, 21286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 20764 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-31 20:56:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-31 20:56:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 214. [2022-01-31 20:56:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 51 states have call successors, (51), 4 states have call predecessors, (51), 3 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 20:56:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2022-01-31 20:56:35,933 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 389 [2022-01-31 20:56:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:35,933 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2022-01-31 20:56:35,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 20:56:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2022-01-31 20:56:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-01-31 20:56:35,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:35,936 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:35,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 20:56:35,936 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1661710311, now seen corresponding path program 48 times [2022-01-31 20:56:35,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:35,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405375327] [2022-01-31 20:56:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:35,939 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:35,939 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:35,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:35,942 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:56:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:56:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:56:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:56:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:56:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:56:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:56:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:56:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:56:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:56:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:56:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:56:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:56:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:56:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:56:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:56:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:56:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:56:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:56:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:56:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:56:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:56:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:56:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:56:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:56:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:56:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:56:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:56:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:56:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:56:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:56:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:56:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:56:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:56:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:56:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:56:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:56:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:56:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:56:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:56:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:56:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:56:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:56:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:56:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:56:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:56:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:56:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:56:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:56:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 20:56:37,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:56:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405375327] [2022-01-31 20:56:37,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [405375327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:56:37,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:56:37,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 20:56:37,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227826560] [2022-01-31 20:56:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:56:37,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 20:56:37,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:56:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 20:56:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 20:56:37,226 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 20:56:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:47,802 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2022-01-31 20:56:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 20:56:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2022-01-31 20:56:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:47,804 INFO L225 Difference]: With dead ends: 428 [2022-01-31 20:56:47,804 INFO L226 Difference]: Without dead ends: 417 [2022-01-31 20:56:47,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=441, Invalid=9659, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 20:56:47,805 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 411 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 23723 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 24217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 23723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:47,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 402 Invalid, 24217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 23723 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-31 20:56:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-31 20:56:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 218. [2022-01-31 20:56:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 52 states have call successors, (52), 4 states have call predecessors, (52), 3 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 20:56:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2022-01-31 20:56:47,900 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 397 [2022-01-31 20:56:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:47,900 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2022-01-31 20:56:47,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 20:56:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2022-01-31 20:56:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-01-31 20:56:47,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:47,902 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:47,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 20:56:47,902 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1501337740, now seen corresponding path program 49 times [2022-01-31 20:56:47,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:47,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973894237] [2022-01-31 20:56:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:47,905 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:47,905 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:47,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:47,908 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:56:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:56:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:56:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:56:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:56:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:56:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:56:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:56:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:56:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:56:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:56:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:56:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:56:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:56:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:56:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:56:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:56:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:56:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:56:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:56:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:56:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:56:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:56:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:56:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:56:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:56:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:56:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:56:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:56:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:56:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:56:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:56:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:56:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:56:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:56:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:56:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:56:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:56:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:56:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:56:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:56:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:56:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:56:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:56:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:56:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:56:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:56:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:56:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:56:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:56:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 20:56:49,157 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:56:49,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973894237] [2022-01-31 20:56:49,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1973894237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:56:49,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:56:49,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 20:56:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614889774] [2022-01-31 20:56:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:56:49,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 20:56:49,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:56:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 20:56:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 20:56:49,159 INFO L87 Difference]: Start difference. First operand 218 states and 267 transitions. Second operand has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 20:56:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:56:59,472 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2022-01-31 20:56:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 20:56:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 405 [2022-01-31 20:56:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:56:59,475 INFO L225 Difference]: With dead ends: 436 [2022-01-31 20:56:59,475 INFO L226 Difference]: Without dead ends: 425 [2022-01-31 20:56:59,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=450, Invalid=10056, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 20:56:59,476 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 459 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 22527 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 23071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 22527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:56:59,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 310 Invalid, 23071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 22527 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-01-31 20:56:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-31 20:56:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 222. [2022-01-31 20:56:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 53 states have call successors, (53), 4 states have call predecessors, (53), 3 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 20:56:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 272 transitions. [2022-01-31 20:56:59,608 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 272 transitions. Word has length 405 [2022-01-31 20:56:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:56:59,609 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 272 transitions. [2022-01-31 20:56:59,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 20:56:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 272 transitions. [2022-01-31 20:56:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-01-31 20:56:59,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:56:59,611 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:56:59,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 20:56:59,611 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:56:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:56:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1956711473, now seen corresponding path program 50 times [2022-01-31 20:56:59,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:56:59,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252963933] [2022-01-31 20:56:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:56:59,614 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:56:59,614 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:56:59,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:56:59,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:56:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:57:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:57:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:57:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:57:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:57:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:57:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:57:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:57:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:57:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:57:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:57:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:57:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:57:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:57:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:57:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:57:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:57:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:57:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:57:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:57:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:57:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:57:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:57:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:57:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:57:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:57:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:57:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:57:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:57:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:57:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:57:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:57:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:57:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:57:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:57:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:57:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:57:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:57:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:57:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:57:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:57:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:57:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:57:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:57:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:57:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:57:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:57:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:57:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:57:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:57:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:57:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 20:57:01,104 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:57:01,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252963933] [2022-01-31 20:57:01,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [252963933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:57:01,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:57:01,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 20:57:01,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128773609] [2022-01-31 20:57:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:57:01,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 20:57:01,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:57:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 20:57:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 20:57:01,106 INFO L87 Difference]: Start difference. First operand 222 states and 272 transitions. Second operand has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 20:57:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:57:11,210 INFO L93 Difference]: Finished difference Result 444 states and 548 transitions. [2022-01-31 20:57:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 20:57:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2022-01-31 20:57:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:57:11,213 INFO L225 Difference]: With dead ends: 444 [2022-01-31 20:57:11,213 INFO L226 Difference]: Without dead ends: 433 [2022-01-31 20:57:11,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=459, Invalid=10461, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 20:57:11,214 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 509 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 21160 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 21756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 21160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-31 20:57:11,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 213 Invalid, 21756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 21160 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-31 20:57:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-31 20:57:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 226. [2022-01-31 20:57:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 54 states have call successors, (54), 4 states have call predecessors, (54), 3 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 20:57:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2022-01-31 20:57:11,327 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 413 [2022-01-31 20:57:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:57:11,327 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2022-01-31 20:57:11,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 20:57:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2022-01-31 20:57:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-31 20:57:11,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:57:11,330 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:57:11,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 20:57:11,330 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:57:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:57:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2042497750, now seen corresponding path program 51 times [2022-01-31 20:57:11,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:57:11,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250612677] [2022-01-31 20:57:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:57:11,333 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:57:11,333 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:57:11,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:57:11,336 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:57:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:57:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:57:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:57:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:57:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:57:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:57:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:57:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:57:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:57:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:57:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:57:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:57:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:57:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:57:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:57:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:57:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:57:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:57:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:57:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:57:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:57:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:57:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:57:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:57:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:57:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:57:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:57:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:57:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:57:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:57:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:57:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:57:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:57:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:57:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:57:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:57:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:57:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:57:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:57:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:57:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:57:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:57:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:57:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:57:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:57:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:57:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:57:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:57:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:57:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:57:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:57:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:57:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 20:57:12,702 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:57:12,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250612677] [2022-01-31 20:57:12,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250612677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:57:12,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:57:12,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 20:57:12,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554811039] [2022-01-31 20:57:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:57:12,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 20:57:12,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:57:12,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 20:57:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 20:57:12,704 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 20:57:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:57:24,473 INFO L93 Difference]: Finished difference Result 452 states and 558 transitions. [2022-01-31 20:57:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 20:57:24,473 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 421 [2022-01-31 20:57:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:57:24,475 INFO L225 Difference]: With dead ends: 452 [2022-01-31 20:57:24,475 INFO L226 Difference]: Without dead ends: 441 [2022-01-31 20:57:24,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=468, Invalid=10874, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 20:57:24,476 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 451 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 25831 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 26371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 25831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:57:24,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 386 Invalid, 26371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 25831 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-31 20:57:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-31 20:57:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 230. [2022-01-31 20:57:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 55 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 20:57:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2022-01-31 20:57:24,594 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 421 [2022-01-31 20:57:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:57:24,594 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2022-01-31 20:57:24,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 20:57:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2022-01-31 20:57:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-01-31 20:57:24,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:57:24,597 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:57:24,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 20:57:24,597 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:57:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:57:24,597 INFO L85 PathProgramCache]: Analyzing trace with hash -421041275, now seen corresponding path program 52 times [2022-01-31 20:57:24,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:57:24,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137256767] [2022-01-31 20:57:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:57:24,601 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:57:24,601 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:57:24,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:57:24,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:57:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:57:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:57:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:57:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:57:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:57:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:57:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:57:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:57:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:57:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:57:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:57:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:57:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:57:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:57:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:57:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:57:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:57:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:57:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:57:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:57:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:57:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:57:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:57:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:57:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:57:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:57:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:57:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:57:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:57:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:57:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:57:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:57:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:57:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:57:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:57:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:57:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:57:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:57:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:57:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:57:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:57:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:57:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:57:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:57:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:57:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:57:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:57:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:57:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:57:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:57:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:57:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:57:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:57:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 20:57:26,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:57:26,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137256767] [2022-01-31 20:57:26,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137256767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:57:26,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:57:26,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 20:57:26,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742194803] [2022-01-31 20:57:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:57:26,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 20:57:26,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:57:26,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 20:57:26,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 20:57:26,033 INFO L87 Difference]: Start difference. First operand 230 states and 282 transitions. Second operand has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 20:57:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:57:37,571 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2022-01-31 20:57:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 20:57:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 429 [2022-01-31 20:57:37,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:57:37,573 INFO L225 Difference]: With dead ends: 460 [2022-01-31 20:57:37,573 INFO L226 Difference]: Without dead ends: 449 [2022-01-31 20:57:37,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=477, Invalid=11295, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 20:57:37,574 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 497 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24674 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 25262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 24674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:57:37,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 299 Invalid, 25262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 24674 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-01-31 20:57:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-31 20:57:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 234. [2022-01-31 20:57:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 56 states have call successors, (56), 4 states have call predecessors, (56), 3 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 20:57:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2022-01-31 20:57:37,687 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 429 [2022-01-31 20:57:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:57:37,687 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2022-01-31 20:57:37,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 20:57:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2022-01-31 20:57:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-01-31 20:57:37,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:57:37,689 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:57:37,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 20:57:37,690 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:57:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:57:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash 302667488, now seen corresponding path program 53 times [2022-01-31 20:57:37,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:57:37,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319574876] [2022-01-31 20:57:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:57:37,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:57:37,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:57:37,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:57:37,697 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:57:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:57:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:57:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:57:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:57:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:57:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:57:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:57:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:57:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:57:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:57:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:57:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:57:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:57:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:57:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:57:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:57:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:57:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:57:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:57:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:57:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:57:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:57:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:57:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:57:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:57:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:57:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:57:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:57:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:57:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:57:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:57:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:57:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:57:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:57:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:57:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:57:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:57:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:57:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:57:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:57:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:57:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:57:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:57:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:57:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:57:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:57:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:57:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:57:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:57:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:57:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:57:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:57:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:57:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:57:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 20:57:39,406 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:57:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319574876] [2022-01-31 20:57:39,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1319574876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:57:39,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:57:39,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 20:57:39,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991435497] [2022-01-31 20:57:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:57:39,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 20:57:39,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:57:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 20:57:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 20:57:39,408 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 20:57:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:57:50,579 INFO L93 Difference]: Finished difference Result 468 states and 578 transitions. [2022-01-31 20:57:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 20:57:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 437 [2022-01-31 20:57:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:57:50,581 INFO L225 Difference]: With dead ends: 468 [2022-01-31 20:57:50,581 INFO L226 Difference]: Without dead ends: 457 [2022-01-31 20:57:50,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=486, Invalid=11724, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 20:57:50,582 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 549 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23110 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 23752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 23110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:57:50,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 197 Invalid, 23752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 23110 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-01-31 20:57:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-31 20:57:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 238. [2022-01-31 20:57:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 57 states have call successors, (57), 4 states have call predecessors, (57), 3 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 20:57:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 292 transitions. [2022-01-31 20:57:50,707 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 292 transitions. Word has length 437 [2022-01-31 20:57:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:57:50,707 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 292 transitions. [2022-01-31 20:57:50,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 20:57:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 292 transitions. [2022-01-31 20:57:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-01-31 20:57:50,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:57:50,709 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:57:50,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 20:57:50,709 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:57:50,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:57:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2124040389, now seen corresponding path program 54 times [2022-01-31 20:57:50,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:57:50,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499511121] [2022-01-31 20:57:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:57:50,716 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:57:50,716 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:57:50,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:57:50,721 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:57:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:57:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:57:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:57:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:57:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:57:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:57:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:57:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:57:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:57:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:57:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:57:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:57:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:57:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:57:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:57:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:57:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:57:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:57:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:57:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:57:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:57:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:57:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:57:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:57:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:57:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:57:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:57:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:57:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:57:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:57:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:57:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:57:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:57:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:57:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:57:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:57:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:57:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:57:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:57:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:57:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:57:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:57:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:57:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:57:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:57:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:57:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:57:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:57:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:57:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:57:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:57:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:57:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:57:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:57:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:57:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:57:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 20:57:52,232 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:57:52,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499511121] [2022-01-31 20:57:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [499511121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:57:52,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:57:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 20:57:52,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044000774] [2022-01-31 20:57:52,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:57:52,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 20:57:52,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:57:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 20:57:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 20:57:52,234 INFO L87 Difference]: Start difference. First operand 238 states and 292 transitions. Second operand has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 20:58:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:58:05,649 INFO L93 Difference]: Finished difference Result 476 states and 588 transitions. [2022-01-31 20:58:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 20:58:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 445 [2022-01-31 20:58:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:58:05,652 INFO L225 Difference]: With dead ends: 476 [2022-01-31 20:58:05,652 INFO L226 Difference]: Without dead ends: 465 [2022-01-31 20:58:05,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=495, Invalid=12161, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 20:58:05,653 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 465 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 29570 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 30130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 29570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:58:05,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 435 Invalid, 30130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 29570 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-01-31 20:58:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-31 20:58:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 242. [2022-01-31 20:58:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 58 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 20:58:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 297 transitions. [2022-01-31 20:58:05,777 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 297 transitions. Word has length 445 [2022-01-31 20:58:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:58:05,778 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 297 transitions. [2022-01-31 20:58:05,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 20:58:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 297 transitions. [2022-01-31 20:58:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-01-31 20:58:05,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:58:05,780 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:58:05,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 20:58:05,780 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:58:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:58:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1011577706, now seen corresponding path program 55 times [2022-01-31 20:58:05,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:58:05,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572933545] [2022-01-31 20:58:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:58:05,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:58:05,785 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:58:05,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:58:05,788 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:58:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:58:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:58:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:58:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:58:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:58:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:58:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:58:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:58:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:58:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:58:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:58:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:58:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:58:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:58:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:58:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:58:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:58:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:58:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:58:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:58:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:58:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:58:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:58:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:58:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:58:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:58:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:58:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:58:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:58:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:58:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:58:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:58:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:58:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:58:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:58:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:58:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:58:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:58:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:58:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:58:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:58:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:58:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:58:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:58:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:58:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:58:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:58:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:58:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:58:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:58:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:58:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:58:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:58:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:58:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:58:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:58:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 20:58:07,337 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:58:07,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572933545] [2022-01-31 20:58:07,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572933545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:58:07,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:58:07,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 20:58:07,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118864935] [2022-01-31 20:58:07,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:58:07,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 20:58:07,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:58:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 20:58:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 20:58:07,339 INFO L87 Difference]: Start difference. First operand 242 states and 297 transitions. Second operand has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 20:58:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:58:21,262 INFO L93 Difference]: Finished difference Result 484 states and 598 transitions. [2022-01-31 20:58:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 20:58:21,262 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 453 [2022-01-31 20:58:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:58:21,264 INFO L225 Difference]: With dead ends: 484 [2022-01-31 20:58:21,264 INFO L226 Difference]: Without dead ends: 473 [2022-01-31 20:58:21,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=504, Invalid=12606, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 20:58:21,265 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 473 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 30668 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 31238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 30668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-01-31 20:58:21,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 443 Invalid, 31238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [570 Valid, 30668 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-01-31 20:58:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-31 20:58:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 246. [2022-01-31 20:58:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 59 states have call successors, (59), 4 states have call predecessors, (59), 3 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 20:58:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2022-01-31 20:58:21,378 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 453 [2022-01-31 20:58:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:58:21,378 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2022-01-31 20:58:21,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-01-31 20:58:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2022-01-31 20:58:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-01-31 20:58:21,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:58:21,381 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:58:21,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 20:58:21,381 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:58:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:58:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2092029681, now seen corresponding path program 56 times [2022-01-31 20:58:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:58:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253550749] [2022-01-31 20:58:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:58:21,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:58:21,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:58:21,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:58:21,386 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:58:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:58:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:58:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:58:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:58:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:58:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:58:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:58:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:58:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:58:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:58:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:58:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:58:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:58:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:58:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:58:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:58:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:58:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:58:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:58:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:58:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:58:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:58:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:58:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:58:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:58:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:58:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:58:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:58:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:58:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:58:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:58:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:58:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:58:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:58:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:58:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:58:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:58:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:58:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:58:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:58:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:58:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:58:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:58:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:58:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:58:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:58:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:58:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:58:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:58:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:58:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:58:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:58:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:58:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:58:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:58:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:58:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:58:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 20:58:22,963 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:58:22,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253550749] [2022-01-31 20:58:22,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1253550749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:58:22,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:58:22,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 20:58:22,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553865622] [2022-01-31 20:58:22,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:58:22,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 20:58:22,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:58:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 20:58:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 20:58:22,965 INFO L87 Difference]: Start difference. First operand 246 states and 302 transitions. Second operand has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 20:58:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:58:35,720 INFO L93 Difference]: Finished difference Result 492 states and 608 transitions. [2022-01-31 20:58:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 20:58:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 461 [2022-01-31 20:58:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:58:35,723 INFO L225 Difference]: With dead ends: 492 [2022-01-31 20:58:35,723 INFO L226 Difference]: Without dead ends: 481 [2022-01-31 20:58:35,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 20:58:35,724 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 569 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 26374 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 27042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 26374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-31 20:58:35,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 231 Invalid, 27042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 26374 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-01-31 20:58:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-31 20:58:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 250. [2022-01-31 20:58:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 60 states have call successors, (60), 4 states have call predecessors, (60), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 20:58:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 307 transitions. [2022-01-31 20:58:35,901 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 307 transitions. Word has length 461 [2022-01-31 20:58:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:58:35,902 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 307 transitions. [2022-01-31 20:58:35,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 20:58:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 307 transitions. [2022-01-31 20:58:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-01-31 20:58:35,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:58:35,904 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:58:35,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 20:58:35,905 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:58:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:58:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1696110156, now seen corresponding path program 57 times [2022-01-31 20:58:35,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:58:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349803768] [2022-01-31 20:58:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:58:35,907 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:58:35,908 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:58:35,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:58:35,910 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:58:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:58:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:58:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:58:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:58:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:58:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:58:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:58:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:58:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:58:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:58:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:58:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:58:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:58:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:58:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:58:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:58:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:58:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:58:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:58:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:58:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:58:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:58:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:58:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:58:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:58:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:58:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:58:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:58:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:58:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:58:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:58:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:58:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:58:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:58:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:58:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:58:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:58:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:58:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:58:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:58:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:58:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:58:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:58:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:58:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:58:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:58:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:58:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:58:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:58:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:58:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:58:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:58:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:58:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:58:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:58:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:58:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:58:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 20:58:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 20:58:37,605 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:58:37,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349803768] [2022-01-31 20:58:37,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1349803768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:58:37,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:58:37,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 20:58:37,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491557022] [2022-01-31 20:58:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:58:37,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 20:58:37,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:58:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 20:58:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 20:58:37,608 INFO L87 Difference]: Start difference. First operand 250 states and 307 transitions. Second operand has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 20:58:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:58:50,655 INFO L93 Difference]: Finished difference Result 500 states and 618 transitions. [2022-01-31 20:58:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 20:58:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 469 [2022-01-31 20:58:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:58:50,658 INFO L225 Difference]: With dead ends: 500 [2022-01-31 20:58:50,658 INFO L226 Difference]: Without dead ends: 489 [2022-01-31 20:58:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=522, Invalid=13520, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 20:58:50,659 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 585 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26924 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 27610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 26924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:58:50,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 219 Invalid, 27610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 26924 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-01-31 20:58:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-31 20:58:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 254. [2022-01-31 20:58:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 189 states have internal predecessors, (191), 61 states have call successors, (61), 4 states have call predecessors, (61), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 20:58:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 312 transitions. [2022-01-31 20:58:50,790 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 312 transitions. Word has length 469 [2022-01-31 20:58:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:58:50,791 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 312 transitions. [2022-01-31 20:58:50,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-31 20:58:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 312 transitions. [2022-01-31 20:58:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-01-31 20:58:50,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:58:50,793 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:58:50,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 20:58:50,793 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:58:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:58:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1252248231, now seen corresponding path program 58 times [2022-01-31 20:58:50,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:58:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777878245] [2022-01-31 20:58:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:58:50,795 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:58:50,795 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:58:50,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:58:50,797 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:58:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:58:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:58:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:58:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:58:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:58:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:58:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:58:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:58:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:58:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:58:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:58:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:58:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:58:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:58:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:58:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:58:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:58:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:58:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:58:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:58:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:58:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:58:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:58:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:58:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:58:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:58:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:58:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:58:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:58:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:58:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:58:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:58:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:58:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:58:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:58:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:58:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:58:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:58:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:58:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:58:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:58:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:58:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:58:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:58:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:58:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:58:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:58:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:58:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:58:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:58:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:58:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:58:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:58:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:58:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:58:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:58:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:58:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 20:58:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 20:58:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:58:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 20:58:52,432 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:58:52,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777878245] [2022-01-31 20:58:52,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [777878245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:58:52,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:58:52,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 20:58:52,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908549017] [2022-01-31 20:58:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:58:52,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 20:58:52,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:58:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 20:58:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 20:58:52,434 INFO L87 Difference]: Start difference. First operand 254 states and 312 transitions. Second operand has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 20:59:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:59:07,424 INFO L93 Difference]: Finished difference Result 508 states and 628 transitions. [2022-01-31 20:59:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 20:59:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 477 [2022-01-31 20:59:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:59:07,426 INFO L225 Difference]: With dead ends: 508 [2022-01-31 20:59:07,426 INFO L226 Difference]: Without dead ends: 497 [2022-01-31 20:59:07,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=531, Invalid=13989, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 20:59:07,427 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 521 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 32558 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 33182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 32558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:59:07,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 407 Invalid, 33182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 32558 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-01-31 20:59:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-31 20:59:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 258. [2022-01-31 20:59:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 62 states have call successors, (62), 4 states have call predecessors, (62), 3 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 20:59:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2022-01-31 20:59:07,560 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 477 [2022-01-31 20:59:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:59:07,561 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2022-01-31 20:59:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 20:59:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2022-01-31 20:59:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-01-31 20:59:07,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:59:07,563 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:59:07,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 20:59:07,563 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:59:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:59:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash 269382658, now seen corresponding path program 59 times [2022-01-31 20:59:07,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:59:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348444928] [2022-01-31 20:59:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:59:07,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:59:07,565 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:59:07,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:59:07,568 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:59:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:59:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:59:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:59:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:59:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:59:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:59:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:59:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:59:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:59:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:59:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:59:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:59:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:59:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:59:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:59:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:59:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:59:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:59:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:59:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:59:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:59:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:59:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:59:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:59:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:59:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:59:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:59:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:59:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:59:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:59:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:59:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:59:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:59:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:59:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:59:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:59:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:59:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:59:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:59:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:59:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:59:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:59:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:59:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:59:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:59:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:59:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:59:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:59:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:59:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:59:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:59:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:59:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:59:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:59:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:59:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:59:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:59:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 20:59:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 20:59:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 20:59:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 20:59:09,310 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:59:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348444928] [2022-01-31 20:59:09,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [348444928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:59:09,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:59:09,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 20:59:09,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513737434] [2022-01-31 20:59:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:59:09,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 20:59:09,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:59:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 20:59:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 20:59:09,312 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 20:59:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:59:24,464 INFO L93 Difference]: Finished difference Result 516 states and 638 transitions. [2022-01-31 20:59:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 20:59:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 485 [2022-01-31 20:59:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:59:24,467 INFO L225 Difference]: With dead ends: 516 [2022-01-31 20:59:24,467 INFO L226 Difference]: Without dead ends: 505 [2022-01-31 20:59:24,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=540, Invalid=14466, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 20:59:24,468 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 549 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 32422 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 33076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 32422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:59:24,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 365 Invalid, 33076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 32422 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-01-31 20:59:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-31 20:59:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 262. [2022-01-31 20:59:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 63 states have call successors, (63), 4 states have call predecessors, (63), 3 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 20:59:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2022-01-31 20:59:24,599 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 485 [2022-01-31 20:59:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:59:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2022-01-31 20:59:24,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-31 20:59:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2022-01-31 20:59:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-01-31 20:59:24,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:59:24,601 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:59:24,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 20:59:24,602 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:59:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:59:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1391226275, now seen corresponding path program 60 times [2022-01-31 20:59:24,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:59:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508964721] [2022-01-31 20:59:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:59:24,604 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:59:24,604 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:59:24,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:59:24,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:59:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:59:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:59:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:59:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:59:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:59:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:59:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:59:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:59:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:59:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:59:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:59:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:59:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:59:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:59:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:59:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:59:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:59:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:59:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:59:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:59:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:59:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:59:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:59:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:59:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:59:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:59:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:59:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:59:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:59:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:59:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:59:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:59:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:59:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:59:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:59:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:59:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:59:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:59:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:59:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:59:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:59:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:59:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:59:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:59:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:59:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:59:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:59:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:59:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:59:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:59:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:59:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:59:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:59:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:59:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:59:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:59:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:59:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 20:59:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 20:59:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 20:59:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 20:59:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 20:59:26,392 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:59:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508964721] [2022-01-31 20:59:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1508964721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:59:26,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:59:26,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 20:59:26,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721325631] [2022-01-31 20:59:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:59:26,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 20:59:26,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:59:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 20:59:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 20:59:26,394 INFO L87 Difference]: Start difference. First operand 262 states and 322 transitions. Second operand has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 20:59:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:59:40,909 INFO L93 Difference]: Finished difference Result 524 states and 648 transitions. [2022-01-31 20:59:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 20:59:40,909 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 493 [2022-01-31 20:59:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:59:40,912 INFO L225 Difference]: With dead ends: 524 [2022-01-31 20:59:40,912 INFO L226 Difference]: Without dead ends: 513 [2022-01-31 20:59:40,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=549, Invalid=14951, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 20:59:40,913 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 615 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29777 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 30499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 29777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-01-31 20:59:40,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 228 Invalid, 30499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 29777 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-01-31 20:59:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-01-31 20:59:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 266. [2022-01-31 20:59:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 64 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 20:59:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions. [2022-01-31 20:59:41,074 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 493 [2022-01-31 20:59:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:59:41,075 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 327 transitions. [2022-01-31 20:59:41,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 20:59:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions. [2022-01-31 20:59:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-01-31 20:59:41,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:59:41,077 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:59:41,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 20:59:41,077 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:59:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:59:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash 778970552, now seen corresponding path program 61 times [2022-01-31 20:59:41,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:59:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834903636] [2022-01-31 20:59:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:59:41,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:59:41,079 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:59:41,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:59:41,081 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:59:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:59:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:59:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 20:59:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 20:59:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 20:59:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 20:59:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 20:59:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 20:59:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 20:59:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 20:59:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 20:59:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 20:59:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 20:59:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 20:59:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 20:59:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 20:59:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 20:59:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 20:59:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 20:59:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 20:59:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 20:59:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 20:59:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 20:59:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 20:59:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 20:59:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 20:59:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 20:59:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 20:59:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 20:59:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 20:59:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 20:59:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 20:59:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 20:59:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 20:59:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 20:59:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 20:59:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 20:59:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 20:59:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 20:59:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 20:59:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 20:59:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 20:59:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 20:59:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 20:59:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 20:59:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 20:59:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 20:59:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 20:59:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 20:59:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 20:59:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 20:59:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 20:59:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 20:59:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 20:59:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 20:59:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 20:59:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 20:59:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 20:59:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 20:59:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 20:59:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 20:59:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 20:59:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:59:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 20:59:42,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:59:42,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834903636] [2022-01-31 20:59:42,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834903636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:59:42,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:59:42,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 20:59:42,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857117158] [2022-01-31 20:59:42,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:59:42,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 20:59:42,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:59:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 20:59:42,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 20:59:42,861 INFO L87 Difference]: Start difference. First operand 266 states and 327 transitions. Second operand has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 20:59:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:59:58,859 INFO L93 Difference]: Finished difference Result 532 states and 658 transitions. [2022-01-31 20:59:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 20:59:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 501 [2022-01-31 20:59:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:59:58,862 INFO L225 Difference]: With dead ends: 532 [2022-01-31 20:59:58,862 INFO L226 Difference]: Without dead ends: 521 [2022-01-31 20:59:58,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=558, Invalid=15444, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 20:59:58,863 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 581 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 33686 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 34376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 33686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-31 20:59:58,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 341 Invalid, 34376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 33686 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-31 20:59:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-31 20:59:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 270. [2022-01-31 20:59:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 201 states have internal predecessors, (203), 65 states have call successors, (65), 4 states have call predecessors, (65), 3 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 20:59:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2022-01-31 20:59:59,010 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 501 [2022-01-31 20:59:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:59:59,010 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2022-01-31 20:59:59,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-31 20:59:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2022-01-31 20:59:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-01-31 20:59:59,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:59:59,013 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:59:59,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 20:59:59,013 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:59:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:59:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1244058093, now seen corresponding path program 62 times [2022-01-31 20:59:59,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:59:59,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549769499] [2022-01-31 20:59:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:59:59,015 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:59:59,015 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:59:59,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:59:59,018 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:59:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:00:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:00:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:00:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:00:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:00:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:00:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:00:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:00:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:00:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:00:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:00:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:00:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:00:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:00:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:00:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:00:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:00:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:00:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:00:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:00:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:00:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:00:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:00:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:00:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:00:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:00:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:00:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:00:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:00:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:00:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:00:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:00:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:00:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:00:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:00:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:00:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:00:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:00:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:00:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:00:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:00:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:00:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:00:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:00:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:00:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:00:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:00:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:00:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:00:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:00:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:00:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:00:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:00:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:00:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:00:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:00:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:00:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:00:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:00:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:00:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:00:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:00:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:00:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 21:00:00,860 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:00:00,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549769499] [2022-01-31 21:00:00,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549769499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:00:00,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:00:00,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 21:00:00,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127603419] [2022-01-31 21:00:00,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:00:00,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 21:00:00,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:00:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 21:00:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 21:00:00,863 INFO L87 Difference]: Start difference. First operand 270 states and 332 transitions. Second operand has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 21:00:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:00:17,413 INFO L93 Difference]: Finished difference Result 540 states and 668 transitions. [2022-01-31 21:00:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 21:00:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 509 [2022-01-31 21:00:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:00:17,415 INFO L225 Difference]: With dead ends: 540 [2022-01-31 21:00:17,415 INFO L226 Difference]: Without dead ends: 529 [2022-01-31 21:00:17,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=567, Invalid=15945, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 21:00:17,417 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 607 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33649 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 34367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 33649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:00:17,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 304 Invalid, 34367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [718 Valid, 33649 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-01-31 21:00:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-01-31 21:00:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 274. [2022-01-31 21:00:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 204 states have internal predecessors, (206), 66 states have call successors, (66), 4 states have call predecessors, (66), 3 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 21:00:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 337 transitions. [2022-01-31 21:00:17,639 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 337 transitions. Word has length 509 [2022-01-31 21:00:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:00:17,639 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 337 transitions. [2022-01-31 21:00:17,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 21:00:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 337 transitions. [2022-01-31 21:00:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-01-31 21:00:17,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:00:17,642 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:00:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 21:00:17,643 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:00:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:00:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2047847278, now seen corresponding path program 63 times [2022-01-31 21:00:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:00:17,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392342870] [2022-01-31 21:00:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:00:17,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:00:17,645 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:00:17,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:00:17,649 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:00:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:00:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:00:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:00:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:00:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:00:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:00:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:00:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:00:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:00:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:00:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:00:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:00:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:00:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:00:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:00:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:00:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:00:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:00:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:00:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:00:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:00:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:00:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:00:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:00:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:00:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:00:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:00:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:00:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:00:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:00:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:00:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:00:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:00:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:00:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:00:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:00:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:00:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:00:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:00:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:00:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:00:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:00:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:00:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:00:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:00:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:00:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:00:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:00:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:00:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:00:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:00:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:00:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:00:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:00:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:00:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:00:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:00:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:00:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:00:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:00:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:00:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:00:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:00:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:00:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 21:00:19,612 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:00:19,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392342870] [2022-01-31 21:00:19,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1392342870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:00:19,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:00:19,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 21:00:19,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080615284] [2022-01-31 21:00:19,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:00:19,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 21:00:19,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:00:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 21:00:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 21:00:19,614 INFO L87 Difference]: Start difference. First operand 274 states and 337 transitions. Second operand has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 21:00:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:00:37,521 INFO L93 Difference]: Finished difference Result 548 states and 678 transitions. [2022-01-31 21:00:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 21:00:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 517 [2022-01-31 21:00:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:00:37,523 INFO L225 Difference]: With dead ends: 548 [2022-01-31 21:00:37,524 INFO L226 Difference]: Without dead ends: 537 [2022-01-31 21:00:37,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2017 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=576, Invalid=16454, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 21:00:37,525 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 585 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 36884 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 37582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 36884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:00:37,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 387 Invalid, 37582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [698 Valid, 36884 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-01-31 21:00:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-31 21:00:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 278. [2022-01-31 21:00:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 67 states have call successors, (67), 4 states have call predecessors, (67), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 21:00:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2022-01-31 21:00:37,692 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 517 [2022-01-31 21:00:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:00:37,693 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2022-01-31 21:00:37,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-31 21:00:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2022-01-31 21:00:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-01-31 21:00:37,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:00:37,696 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:00:37,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 21:00:37,696 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:00:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:00:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash -959668791, now seen corresponding path program 64 times [2022-01-31 21:00:37,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:00:37,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363807968] [2022-01-31 21:00:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:00:37,699 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:00:37,699 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:00:37,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:00:37,702 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:00:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:00:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:00:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:00:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:00:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:00:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:00:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:00:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:00:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:00:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:00:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:00:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:00:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:00:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:00:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:00:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:00:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:00:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:00:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:00:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:00:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:00:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:00:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:00:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:00:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:00:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:00:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:00:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:00:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:00:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:00:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:00:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:00:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:00:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:00:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:00:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:00:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:00:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:00:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:00:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:00:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:00:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:00:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:00:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:00:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:00:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:00:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:00:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:00:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:00:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:00:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:00:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:00:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:00:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:00:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:00:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:00:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:00:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:00:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:00:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:00:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:00:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:00:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:00:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:00:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:00:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 21:00:39,653 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:00:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363807968] [2022-01-31 21:00:39,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1363807968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:00:39,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:00:39,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 21:00:39,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467705785] [2022-01-31 21:00:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:00:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 21:00:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:00:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 21:00:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 21:00:39,655 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 21:00:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:00:56,973 INFO L93 Difference]: Finished difference Result 556 states and 688 transitions. [2022-01-31 21:00:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 21:00:56,974 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 525 [2022-01-31 21:00:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:00:56,976 INFO L225 Difference]: With dead ends: 556 [2022-01-31 21:00:56,976 INFO L226 Difference]: Without dead ends: 545 [2022-01-31 21:00:56,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=585, Invalid=16971, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 21:00:56,978 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 655 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 33805 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 34575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 33805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:00:56,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 240 Invalid, 34575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [770 Valid, 33805 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-01-31 21:00:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-01-31 21:00:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 282. [2022-01-31 21:00:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 68 states have call successors, (68), 4 states have call predecessors, (68), 3 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-01-31 21:00:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 347 transitions. [2022-01-31 21:00:57,170 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 347 transitions. Word has length 525 [2022-01-31 21:00:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:00:57,171 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 347 transitions. [2022-01-31 21:00:57,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 21:00:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 347 transitions. [2022-01-31 21:00:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-01-31 21:00:57,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:00:57,173 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:00:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 21:00:57,173 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:00:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:00:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -53803740, now seen corresponding path program 65 times [2022-01-31 21:00:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:00:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533379041] [2022-01-31 21:00:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:00:57,176 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:00:57,176 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:00:57,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:00:57,178 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:00:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:00:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:00:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:00:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:00:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:00:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:00:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:00:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:00:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:00:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:00:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:00:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:00:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:00:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:00:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:00:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:00:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:00:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:00:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:00:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:00:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:00:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:00:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:00:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:00:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:00:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:00:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:00:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:00:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:00:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:00:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:00:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:00:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:00:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:00:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:00:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:00:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:00:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:00:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:00:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:00:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:00:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:00:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:00:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:00:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:00:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:00:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:00:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:00:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:00:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:00:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:00:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:00:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:00:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:00:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:00:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:00:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:00:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:00:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:00:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:00:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:00:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:00:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:00:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:00:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:00:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:00:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:00:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 21:00:59,203 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:00:59,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533379041] [2022-01-31 21:00:59,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [533379041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:00:59,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:00:59,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 21:00:59,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937892118] [2022-01-31 21:00:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:00:59,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 21:00:59,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:00:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 21:00:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 21:00:59,205 INFO L87 Difference]: Start difference. First operand 282 states and 347 transitions. Second operand has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 21:01:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:01:19,258 INFO L93 Difference]: Finished difference Result 564 states and 698 transitions. [2022-01-31 21:01:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 21:01:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 533 [2022-01-31 21:01:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:01:19,261 INFO L225 Difference]: With dead ends: 564 [2022-01-31 21:01:19,261 INFO L226 Difference]: Without dead ends: 553 [2022-01-31 21:01:19,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=594, Invalid=17496, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 21:01:19,262 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 571 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 41479 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 42167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 41479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:01:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 478 Invalid, 42167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [688 Valid, 41479 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-01-31 21:01:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-01-31 21:01:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 286. [2022-01-31 21:01:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 213 states have internal predecessors, (215), 69 states have call successors, (69), 4 states have call predecessors, (69), 3 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-31 21:01:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 352 transitions. [2022-01-31 21:01:19,419 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 352 transitions. Word has length 533 [2022-01-31 21:01:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:01:19,420 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 352 transitions. [2022-01-31 21:01:19,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-01-31 21:01:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 352 transitions. [2022-01-31 21:01:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-01-31 21:01:19,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:01:19,423 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:01:19,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 21:01:19,423 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:01:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:01:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1849302657, now seen corresponding path program 66 times [2022-01-31 21:01:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:01:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077803005] [2022-01-31 21:01:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:01:19,428 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:01:19,428 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:01:19,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:01:19,431 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:01:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:01:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:01:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:01:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:01:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:01:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:01:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:01:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:01:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:01:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:01:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:01:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:01:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:01:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:01:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:01:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:01:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:01:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:01:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:01:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:01:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:01:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:01:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:01:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:01:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:01:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:01:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:01:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:01:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:01:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:01:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:01:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:01:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:01:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:01:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:01:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:01:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:01:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:01:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:01:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:01:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:01:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:01:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:01:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:01:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:01:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:01:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:01:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:01:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:01:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:01:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:01:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:01:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:01:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:01:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:01:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:01:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:01:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:01:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:01:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:01:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:01:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:01:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:01:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:01:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:01:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:01:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:01:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 21:01:21,485 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:01:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077803005] [2022-01-31 21:01:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077803005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:01:21,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:01:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 21:01:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7963171] [2022-01-31 21:01:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:01:21,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 21:01:21,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:01:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 21:01:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 21:01:21,487 INFO L87 Difference]: Start difference. First operand 286 states and 352 transitions. Second operand has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-01-31 21:01:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:01:41,627 INFO L93 Difference]: Finished difference Result 572 states and 708 transitions. [2022-01-31 21:01:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 21:01:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 541 [2022-01-31 21:01:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:01:41,630 INFO L225 Difference]: With dead ends: 572 [2022-01-31 21:01:41,630 INFO L226 Difference]: Without dead ends: 561 [2022-01-31 21:01:41,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=603, Invalid=18029, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 21:01:41,631 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 603 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 41063 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 41785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 41063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:01:41,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 426 Invalid, 41785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [722 Valid, 41063 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-01-31 21:01:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-31 21:01:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 290. [2022-01-31 21:01:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 216 states have internal predecessors, (218), 70 states have call successors, (70), 4 states have call predecessors, (70), 3 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 21:01:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2022-01-31 21:01:41,802 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 541 [2022-01-31 21:01:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:01:41,802 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2022-01-31 21:01:41,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-01-31 21:01:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2022-01-31 21:01:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-01-31 21:01:41,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:01:41,804 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:01:41,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 21:01:41,805 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:01:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:01:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 276312794, now seen corresponding path program 67 times [2022-01-31 21:01:41,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:01:41,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746663148] [2022-01-31 21:01:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:01:41,807 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:01:41,807 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:01:41,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:01:41,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:01:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:01:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:01:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:01:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:01:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:01:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:01:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:01:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:01:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:01:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:01:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:01:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:01:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:01:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:01:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:01:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:01:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:01:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:01:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:01:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:01:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:01:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:01:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:01:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:01:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:01:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:01:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:01:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:01:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:01:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:01:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:01:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:01:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:01:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:01:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:01:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:01:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:01:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:01:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:01:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:01:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:01:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:01:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:01:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:01:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:01:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:01:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:01:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:01:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:01:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:01:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:01:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:01:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:01:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:01:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:01:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:01:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:01:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:01:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:01:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:01:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:01:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:01:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:01:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:01:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:01:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:01:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:01:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:01:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:01:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 21:01:43,942 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:01:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746663148] [2022-01-31 21:01:43,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [746663148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:01:43,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:01:43,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 21:01:43,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091773061] [2022-01-31 21:01:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:01:43,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 21:01:43,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:01:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 21:01:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 21:01:43,945 INFO L87 Difference]: Start difference. First operand 290 states and 357 transitions. Second operand has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-31 21:02:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:02:06,604 INFO L93 Difference]: Finished difference Result 580 states and 718 transitions. [2022-01-31 21:02:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 21:02:06,605 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 549 [2022-01-31 21:02:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:02:06,607 INFO L225 Difference]: With dead ends: 580 [2022-01-31 21:02:06,607 INFO L226 Difference]: Without dead ends: 569 [2022-01-31 21:02:06,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=612, Invalid=18570, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 21:02:06,609 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 561 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 45984 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 46666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 45984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:02:06,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 559 Invalid, 46666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [682 Valid, 45984 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-01-31 21:02:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-31 21:02:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2022-01-31 21:02:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 219 states have internal predecessors, (221), 71 states have call successors, (71), 4 states have call predecessors, (71), 3 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-01-31 21:02:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-01-31 21:02:06,808 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 549 [2022-01-31 21:02:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:02:06,808 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-01-31 21:02:06,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-31 21:02:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-01-31 21:02:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-01-31 21:02:06,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:02:06,811 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:02:06,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 21:02:06,811 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:02:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:02:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 412940597, now seen corresponding path program 68 times [2022-01-31 21:02:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:02:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117906178] [2022-01-31 21:02:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:02:06,815 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:02:06,815 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:02:06,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:02:06,819 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:02:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:02:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:02:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:02:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:02:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:02:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:02:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:02:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:02:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:02:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:02:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:02:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:02:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:02:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:02:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:02:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:02:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:02:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:02:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:02:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:02:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:02:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:02:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:02:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:02:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:02:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:02:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:02:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:02:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:02:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:02:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:02:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:02:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:02:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:02:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:02:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:02:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:02:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:02:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:02:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:02:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:02:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:02:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:02:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:02:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:02:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:02:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:02:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:02:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:02:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:02:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:02:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:02:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:02:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:02:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:02:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:02:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:02:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:02:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:02:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:02:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:02:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:02:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:02:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:02:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:02:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:02:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:02:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:02:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:02:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 21:02:09,267 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:02:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117906178] [2022-01-31 21:02:09,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [117906178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:02:09,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:02:09,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 21:02:09,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165719651] [2022-01-31 21:02:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:02:09,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 21:02:09,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:02:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 21:02:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 21:02:09,270 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 21:02:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:02:32,159 INFO L93 Difference]: Finished difference Result 588 states and 728 transitions. [2022-01-31 21:02:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 21:02:32,161 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 557 [2022-01-31 21:02:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:02:32,163 INFO L225 Difference]: With dead ends: 588 [2022-01-31 21:02:32,164 INFO L226 Difference]: Without dead ends: 577 [2022-01-31 21:02:32,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=621, Invalid=19119, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 21:02:32,165 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 625 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 43234 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 43982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 43234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:02:32,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 427 Invalid, 43982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [748 Valid, 43234 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-01-31 21:02:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-31 21:02:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 298. [2022-01-31 21:02:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 72 states have call successors, (72), 4 states have call predecessors, (72), 3 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 21:02:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2022-01-31 21:02:32,342 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 557 [2022-01-31 21:02:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:02:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2022-01-31 21:02:32,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 21:02:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2022-01-31 21:02:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-01-31 21:02:32,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:02:32,352 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:02:32,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 21:02:32,352 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:02:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:02:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1592734864, now seen corresponding path program 69 times [2022-01-31 21:02:32,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:02:32,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142766622] [2022-01-31 21:02:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:02:32,360 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:02:32,360 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:02:32,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:02:32,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:02:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:02:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:02:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:02:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:02:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:02:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:02:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:02:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:02:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:02:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:02:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:02:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:02:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:02:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:02:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:02:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:02:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:02:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:02:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:02:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:02:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:02:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:02:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:02:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:02:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:02:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:02:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:02:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:02:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:02:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:02:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:02:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:02:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:02:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:02:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:02:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:02:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:02:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:02:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:02:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:02:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:02:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:02:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:02:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:02:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:02:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:02:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:02:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:02:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:02:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:02:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:02:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:02:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:02:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:02:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:02:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:02:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:02:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:02:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:02:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:02:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:02:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:02:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:02:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:02:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:02:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:02:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:02:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:02:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:02:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:02:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 21:02:34,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:02:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142766622] [2022-01-31 21:02:34,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1142766622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:02:34,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:02:34,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 21:02:34,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943594005] [2022-01-31 21:02:34,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:02:34,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 21:02:34,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:02:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 21:02:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 21:02:34,594 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-01-31 21:02:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:02:55,737 INFO L93 Difference]: Finished difference Result 596 states and 738 transitions. [2022-01-31 21:02:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 21:02:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 565 [2022-01-31 21:02:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:02:55,739 INFO L225 Difference]: With dead ends: 596 [2022-01-31 21:02:55,740 INFO L226 Difference]: Without dead ends: 585 [2022-01-31 21:02:55,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=630, Invalid=19676, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 21:02:55,741 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 695 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39945 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 40765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 39945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:02:55,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 280 Invalid, 40765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [820 Valid, 39945 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-01-31 21:02:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-01-31 21:02:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 302. [2022-01-31 21:02:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 225 states have (on average 1.008888888888889) internal successors, (227), 225 states have internal predecessors, (227), 73 states have call successors, (73), 4 states have call predecessors, (73), 3 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 21:02:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 372 transitions. [2022-01-31 21:02:55,917 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 372 transitions. Word has length 565 [2022-01-31 21:02:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:02:55,917 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 372 transitions. [2022-01-31 21:02:55,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-01-31 21:02:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 372 transitions. [2022-01-31 21:02:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-01-31 21:02:55,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:02:55,920 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:02:55,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 21:02:55,920 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:02:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:02:55,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1389763349, now seen corresponding path program 70 times [2022-01-31 21:02:55,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:02:55,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489797137] [2022-01-31 21:02:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:02:55,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:02:55,928 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:02:55,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:02:55,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:02:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:02:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:02:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:02:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:02:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:02:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:02:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:02:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:02:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:02:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:02:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:02:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:02:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:02:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:02:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:02:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:02:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:02:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:02:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:02:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:02:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:02:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:02:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:02:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:02:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:02:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:02:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:02:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:02:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:02:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:02:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:02:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:02:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:02:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:02:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:02:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:02:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:02:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:02:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:02:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:02:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:02:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:02:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:02:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:02:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:02:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:02:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:02:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:02:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:02:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:02:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:02:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:02:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:02:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:02:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:02:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:02:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:02:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:02:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:02:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:02:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:02:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:02:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:02:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:02:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:02:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:02:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:02:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:02:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:02:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:02:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 21:02:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:02:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 21:02:58,183 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:02:58,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489797137] [2022-01-31 21:02:58,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1489797137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:02:58,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:02:58,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 21:02:58,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285092692] [2022-01-31 21:02:58,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:02:58,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 21:02:58,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:02:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 21:02:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 21:02:58,185 INFO L87 Difference]: Start difference. First operand 302 states and 372 transitions. Second operand has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 21:03:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:03:20,925 INFO L93 Difference]: Finished difference Result 604 states and 748 transitions. [2022-01-31 21:03:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 21:03:20,926 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Word has length 573 [2022-01-31 21:03:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:03:20,928 INFO L225 Difference]: With dead ends: 604 [2022-01-31 21:03:20,929 INFO L226 Difference]: Without dead ends: 593 [2022-01-31 21:03:20,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=639, Invalid=20241, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 21:03:20,930 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 637 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 46216 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 46980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 46216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:03:20,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 453 Invalid, 46980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [764 Valid, 46216 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-01-31 21:03:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-31 21:03:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 306. [2022-01-31 21:03:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 74 states have call successors, (74), 4 states have call predecessors, (74), 3 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-31 21:03:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 377 transitions. [2022-01-31 21:03:21,126 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 377 transitions. Word has length 573 [2022-01-31 21:03:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:03:21,127 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 377 transitions. [2022-01-31 21:03:21,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 21:03:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 377 transitions. [2022-01-31 21:03:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-01-31 21:03:21,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:03:21,130 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:03:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 21:03:21,131 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:03:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:03:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -502789562, now seen corresponding path program 71 times [2022-01-31 21:03:21,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:03:21,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63656771] [2022-01-31 21:03:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:03:21,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:03:21,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:03:21,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:03:21,137 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:03:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:03:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:03:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:03:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:03:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:03:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:03:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:03:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:03:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:03:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:03:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:03:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:03:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:03:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:03:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:03:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:03:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:03:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:03:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:03:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:03:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:03:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:03:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:03:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:03:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:03:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:03:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:03:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:03:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:03:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:03:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:03:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:03:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:03:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:03:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:03:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:03:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:03:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:03:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:03:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:03:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:03:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:03:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:03:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:03:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:03:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:03:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:03:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:03:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:03:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:03:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:03:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:03:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:03:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:03:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:03:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:03:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:03:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:03:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:03:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:03:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:03:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:03:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:03:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:03:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:03:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:03:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:03:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:03:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:03:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:03:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 21:03:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 21:03:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 21:03:23,510 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:03:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63656771] [2022-01-31 21:03:23,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [63656771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:03:23,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:03:23,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 21:03:23,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616328593] [2022-01-31 21:03:23,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:03:23,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 21:03:23,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:03:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 21:03:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 21:03:23,512 INFO L87 Difference]: Start difference. First operand 306 states and 377 transitions. Second operand has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 21:03:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:03:47,206 INFO L93 Difference]: Finished difference Result 612 states and 758 transitions. [2022-01-31 21:03:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 21:03:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 581 [2022-01-31 21:03:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:03:47,209 INFO L225 Difference]: With dead ends: 612 [2022-01-31 21:03:47,209 INFO L226 Difference]: Without dead ends: 601 [2022-01-31 21:03:47,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=648, Invalid=20814, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 21:03:47,211 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 643 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 47743 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 48515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 47743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:03:47,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 466 Invalid, 48515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [772 Valid, 47743 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-01-31 21:03:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-31 21:03:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 310. [2022-01-31 21:03:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 75 states have call successors, (75), 4 states have call predecessors, (75), 3 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 21:03:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 382 transitions. [2022-01-31 21:03:47,420 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 382 transitions. Word has length 581 [2022-01-31 21:03:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:03:47,421 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 382 transitions. [2022-01-31 21:03:47,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-01-31 21:03:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 382 transitions. [2022-01-31 21:03:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-01-31 21:03:47,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:03:47,424 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:03:47,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 21:03:47,424 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:03:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:03:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash -247159647, now seen corresponding path program 72 times [2022-01-31 21:03:47,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:03:47,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942553714] [2022-01-31 21:03:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:03:47,428 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:03:47,428 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:03:47,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:03:47,432 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:03:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:03:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:03:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:03:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:03:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:03:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:03:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:03:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:03:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:03:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:03:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:03:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:03:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:03:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:03:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:03:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:03:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:03:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:03:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:03:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:03:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:03:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:03:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:03:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:03:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:03:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:03:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:03:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:03:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:03:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:03:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:03:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:03:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:03:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:03:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:03:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:03:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:03:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:03:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:03:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:03:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:03:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:03:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:03:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:03:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:03:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:03:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:03:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:03:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:03:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:03:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:03:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:03:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:03:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:03:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:03:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:03:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:03:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:03:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:03:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:03:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:03:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:03:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:03:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:03:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:03:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:03:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:03:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:03:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:03:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:03:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 21:03:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 21:03:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-01-31 21:03:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:03:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 21:03:49,833 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:03:49,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942553714] [2022-01-31 21:03:49,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1942553714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:03:49,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:03:49,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 21:03:49,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997571709] [2022-01-31 21:03:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:03:49,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 21:03:49,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:03:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 21:03:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 21:03:49,835 INFO L87 Difference]: Start difference. First operand 310 states and 382 transitions. Second operand has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-31 21:04:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:04:15,414 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2022-01-31 21:04:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 21:04:15,415 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Word has length 589 [2022-01-31 21:04:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:04:15,417 INFO L225 Difference]: With dead ends: 620 [2022-01-31 21:04:15,417 INFO L226 Difference]: Without dead ends: 609 [2022-01-31 21:04:15,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=657, Invalid=21395, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 21:04:15,418 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 601 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 53014 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 53746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 53014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:04:15,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 599 Invalid, 53746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [732 Valid, 53014 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-01-31 21:04:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-31 21:04:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 314. [2022-01-31 21:04:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 234 states have internal predecessors, (236), 76 states have call successors, (76), 4 states have call predecessors, (76), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-31 21:04:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 387 transitions. [2022-01-31 21:04:15,620 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 387 transitions. Word has length 589 [2022-01-31 21:04:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:04:15,620 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 387 transitions. [2022-01-31 21:04:15,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-31 21:04:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 387 transitions. [2022-01-31 21:04:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-01-31 21:04:15,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:04:15,623 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:04:15,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 21:04:15,623 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:04:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:04:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash -476400644, now seen corresponding path program 73 times [2022-01-31 21:04:15,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:04:15,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16289777] [2022-01-31 21:04:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:04:15,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:04:15,632 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:04:15,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:04:15,636 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:04:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:04:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:04:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:04:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:04:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:04:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:04:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:04:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:04:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:04:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:04:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:04:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:04:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:04:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:04:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:04:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:04:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:04:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:04:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:04:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:04:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:04:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:04:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:04:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:04:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:04:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:04:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:04:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:04:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:04:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:04:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:04:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:04:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:04:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:04:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:04:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:04:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:04:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:04:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:04:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:04:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:04:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:04:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:04:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:04:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:04:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:04:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:04:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:04:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:04:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:04:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:04:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:04:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:04:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:04:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:04:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:04:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:04:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:04:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:04:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:04:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:04:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:04:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:04:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:04:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:04:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:04:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:04:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:04:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:04:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:04:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 21:04:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 21:04:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-01-31 21:04:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-01-31 21:04:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 21:04:18,085 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:04:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16289777] [2022-01-31 21:04:18,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [16289777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:04:18,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:04:18,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 21:04:18,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250463420] [2022-01-31 21:04:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:04:18,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 21:04:18,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:04:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 21:04:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 21:04:18,086 INFO L87 Difference]: Start difference. First operand 314 states and 387 transitions. Second operand has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 21:04:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:04:41,460 INFO L93 Difference]: Finished difference Result 628 states and 778 transitions. [2022-01-31 21:04:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 21:04:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 597 [2022-01-31 21:04:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:04:41,463 INFO L225 Difference]: With dead ends: 628 [2022-01-31 21:04:41,463 INFO L226 Difference]: Without dead ends: 617 [2022-01-31 21:04:41,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=666, Invalid=21984, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 21:04:41,465 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 731 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44903 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 45767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 44903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:04:41,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 302 Invalid, 45767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [864 Valid, 44903 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2022-01-31 21:04:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-01-31 21:04:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 318. [2022-01-31 21:04:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 237 states have internal predecessors, (239), 77 states have call successors, (77), 4 states have call predecessors, (77), 3 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-01-31 21:04:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2022-01-31 21:04:41,669 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 597 [2022-01-31 21:04:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:04:41,669 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2022-01-31 21:04:41,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-01-31 21:04:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2022-01-31 21:04:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-01-31 21:04:41,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:04:41,672 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:04:41,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 21:04:41,672 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:04:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:04:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash -691718057, now seen corresponding path program 74 times [2022-01-31 21:04:41,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:04:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31390422] [2022-01-31 21:04:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:04:41,676 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:04:41,676 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 21:04:41,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:04:41,680 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:04:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:04:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 21:04:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 21:04:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 21:04:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 21:04:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 21:04:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 21:04:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 21:04:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 21:04:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 21:04:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 21:04:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 21:04:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 21:04:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 21:04:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 21:04:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 21:04:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 21:04:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 21:04:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 21:04:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 21:04:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 21:04:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 21:04:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 21:04:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 21:04:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 21:04:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 21:04:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 21:04:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 21:04:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 21:04:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 21:04:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 21:04:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 21:04:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 21:04:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 21:04:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 21:04:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 21:04:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 21:04:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 21:04:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 21:04:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 21:04:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 21:04:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 21:04:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 21:04:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 21:04:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 21:04:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 21:04:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 21:04:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 21:04:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 21:04:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 21:04:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 21:04:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 21:04:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 21:04:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 21:04:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 21:04:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 21:04:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 21:04:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 21:04:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 21:04:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 21:04:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 21:04:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 21:04:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 21:04:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 21:04:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 21:04:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 21:04:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 21:04:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 21:04:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 21:04:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 21:04:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 21:04:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-01-31 21:04:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-01-31 21:04:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-01-31 21:04:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-01-31 21:04:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:04:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-01-31 21:04:44,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:04:44,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31390422] [2022-01-31 21:04:44,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [31390422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:04:44,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:04:44,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 21:04:44,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26526053] [2022-01-31 21:04:44,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:04:44,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 21:04:44,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:04:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 21:04:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 21:04:44,162 INFO L87 Difference]: Start difference. First operand 318 states and 392 transitions. Second operand has 78 states, 78 states have (on average 3.0) internal successors, (234), 77 states have internal predecessors, (234), 76 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)