/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-6c470ae [2022-02-15 01:27:11,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:27:11,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:27:11,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:27:11,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:27:11,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:27:11,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:27:11,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 01:27:11,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:27:11,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:27:11,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:27:11,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:27:11,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:27:11,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:27:11,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:27:11,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:27:11,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:27:11,122 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:27:11,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:27:11,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:27:11,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:27:11,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:27:11,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:27:11,370 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:27:11,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-02-15 01:27:11,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393832953/d8e38347ea1c4b7cbdc7d116586de493/FLAGe7a7f0095 [2022-02-15 01:27:11,780 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:27:11,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-02-15 01:27:11,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393832953/d8e38347ea1c4b7cbdc7d116586de493/FLAGe7a7f0095 [2022-02-15 01:27:11,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393832953/d8e38347ea1c4b7cbdc7d116586de493 [2022-02-15 01:27:11,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:27:11,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:27:11,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:27:11,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:27:11,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:27:11,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:27:11" (1/1) ... [2022-02-15 01:27:11,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f04091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:11, skipping insertion in model container [2022-02-15 01:27:11,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:27:11" (1/1) ... [2022-02-15 01:27:11,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:27:11,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:27:11,963 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] [2022-02-15 01:27:11,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:27:11,984 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:27:11,995 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] [2022-02-15 01:27:12,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:27:12,020 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:27:12,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12 WrapperNode [2022-02-15 01:27:12,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:27:12,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:27:12,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:27:12,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:27:12,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:27:12,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:27:12,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:27:12,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:27:12,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (1/1) ... [2022-02-15 01:27:12,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:27:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:27:12,099 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) [2022-02-15 01:27:12,157 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 [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:27:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:27:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:27:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:27:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-15 01:27:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-15 01:27:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:27:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:27:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 01:27:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:27:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:27:12,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:27:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:27:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:27:12,272 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:27:12,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:27:12,380 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:27:12,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:27:12,386 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-15 01:27:12,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:27:12 BoogieIcfgContainer [2022-02-15 01:27:12,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:27:12,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:27:12,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:27:12,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:27:12,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:27:11" (1/3) ... [2022-02-15 01:27:12,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1360535c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:27:12, skipping insertion in model container [2022-02-15 01:27:12,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:27:12" (2/3) ... [2022-02-15 01:27:12,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1360535c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:27:12, skipping insertion in model container [2022-02-15 01:27:12,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:27:12" (3/3) ... [2022-02-15 01:27:12,394 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2022-02-15 01:27:12,398 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:27:12,399 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:27:12,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:27:12,465 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 [2022-02-15 01:27:12,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:27:12,498 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) [2022-02-15 01:27:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 01:27:12,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:12,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:12,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1210672905, now seen corresponding path program 1 times [2022-02-15 01:27:12,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:12,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608590920] [2022-02-15 01:27:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:12,646 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:12,856 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:12,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608590920] [2022-02-15 01:27:12,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [608590920] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:12,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:12,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 01:27:12,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138704686] [2022-02-15 01:27:12,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:12,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 01:27:12,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 01:27:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 01:27:12,898 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) [2022-02-15 01:27:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:13,048 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2022-02-15 01:27:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 01:27:13,050 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 [2022-02-15 01:27:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:13,060 INFO L225 Difference]: With dead ends: 62 [2022-02-15 01:27:13,060 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 01:27:13,063 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 [2022-02-15 01:27:13,067 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 [2022-02-15 01:27:13,068 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] [2022-02-15 01:27:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 01:27:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-02-15 01:27:13,101 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) [2022-02-15 01:27:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-15 01:27:13,103 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-02-15 01:27:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:13,103 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-15 01:27:13,103 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) [2022-02-15 01:27:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-15 01:27:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:27:13,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:13,104 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] [2022-02-15 01:27:13,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:27:13,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 778735204, now seen corresponding path program 1 times [2022-02-15 01:27:13,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:13,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634092366] [2022-02-15 01:27:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:13,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:13,123 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:13,125 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:13,207 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:13,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634092366] [2022-02-15 01:27:13,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1634092366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:13,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:13,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:27:13,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554450567] [2022-02-15 01:27:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:13,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:27:13,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:27:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:27:13,209 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) [2022-02-15 01:27:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:13,355 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-02-15 01:27:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:27:13,357 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 [2022-02-15 01:27:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:13,358 INFO L225 Difference]: With dead ends: 52 [2022-02-15 01:27:13,358 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 01:27:13,358 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 [2022-02-15 01:27:13,360 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 [2022-02-15 01:27:13,360 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] [2022-02-15 01:27:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 01:27:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-02-15 01:27:13,383 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) [2022-02-15 01:27:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-02-15 01:27:13,383 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2022-02-15 01:27:13,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:13,384 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-02-15 01:27:13,384 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) [2022-02-15 01:27:13,384 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-02-15 01:27:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:27:13,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:13,385 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] [2022-02-15 01:27:13,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:27:13,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:13,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1692936895, now seen corresponding path program 2 times [2022-02-15 01:27:13,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:13,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17143336] [2022-02-15 01:27:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:13,394 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:13,394 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:13,397 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 01:27:13,530 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:13,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17143336] [2022-02-15 01:27:13,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [17143336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:13,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:13,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:27:13,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284482949] [2022-02-15 01:27:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:13,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:27:13,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:27:13,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:27:13,532 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) [2022-02-15 01:27:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:13,662 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-02-15 01:27:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:27:13,666 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 [2022-02-15 01:27:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:13,668 INFO L225 Difference]: With dead ends: 60 [2022-02-15 01:27:13,668 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 01:27:13,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:27:13,669 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 [2022-02-15 01:27:13,670 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] [2022-02-15 01:27:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 01:27:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-02-15 01:27:13,687 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) [2022-02-15 01:27:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-02-15 01:27:13,688 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2022-02-15 01:27:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:13,688 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-02-15 01:27:13,688 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) [2022-02-15 01:27:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-02-15 01:27:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:27:13,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:13,690 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] [2022-02-15 01:27:13,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:27:13,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 912079898, now seen corresponding path program 3 times [2022-02-15 01:27:13,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:13,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88271351] [2022-02-15 01:27:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:13,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:13,695 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:13,696 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-15 01:27:13,813 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:13,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88271351] [2022-02-15 01:27:13,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [88271351] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:13,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:13,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 01:27:13,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122952675] [2022-02-15 01:27:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 01:27:13,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 01:27:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:27:13,815 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) [2022-02-15 01:27:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:14,046 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2022-02-15 01:27:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 01:27:14,046 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 [2022-02-15 01:27:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:14,048 INFO L225 Difference]: With dead ends: 68 [2022-02-15 01:27:14,048 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 01:27:14,049 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 [2022-02-15 01:27:14,050 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 [2022-02-15 01:27:14,050 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] [2022-02-15 01:27:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 01:27:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2022-02-15 01:27:14,065 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) [2022-02-15 01:27:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-02-15 01:27:14,066 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2022-02-15 01:27:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:14,066 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-02-15 01:27:14,066 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) [2022-02-15 01:27:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-02-15 01:27:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 01:27:14,067 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:14,067 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] [2022-02-15 01:27:14,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 01:27:14,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 42254965, now seen corresponding path program 4 times [2022-02-15 01:27:14,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:14,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031845350] [2022-02-15 01:27:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:14,070 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:14,071 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:14,072 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-15 01:27:14,220 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:14,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031845350] [2022-02-15 01:27:14,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031845350] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:14,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:14,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:27:14,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098629071] [2022-02-15 01:27:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:14,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:27:14,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:27:14,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:27:14,223 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) [2022-02-15 01:27:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:14,441 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-02-15 01:27:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:27:14,441 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 [2022-02-15 01:27:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:14,444 INFO L225 Difference]: With dead ends: 76 [2022-02-15 01:27:14,444 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 01:27:14,445 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 [2022-02-15 01:27:14,452 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:14,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 45 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:27:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 01:27:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2022-02-15 01:27:14,469 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) [2022-02-15 01:27:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-02-15 01:27:14,474 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 45 [2022-02-15 01:27:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:14,475 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-02-15 01:27:14,475 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) [2022-02-15 01:27:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-02-15 01:27:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:27:14,477 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:14,477 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] [2022-02-15 01:27:14,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 01:27:14,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1041874384, now seen corresponding path program 5 times [2022-02-15 01:27:14,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:14,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63307418] [2022-02-15 01:27:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:14,483 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:14,483 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:14,489 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-15 01:27:14,705 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:14,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63307418] [2022-02-15 01:27:14,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [63307418] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:14,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:14,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:27:14,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499055498] [2022-02-15 01:27:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:14,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:27:14,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:27:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:27:14,707 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) [2022-02-15 01:27:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:14,982 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2022-02-15 01:27:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:27:14,982 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 [2022-02-15 01:27:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:14,984 INFO L225 Difference]: With dead ends: 84 [2022-02-15 01:27:14,984 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 01:27:14,985 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 [2022-02-15 01:27:14,987 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 [2022-02-15 01:27:14,990 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] [2022-02-15 01:27:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 01:27:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2022-02-15 01:27:15,006 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) [2022-02-15 01:27:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-02-15 01:27:15,007 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 53 [2022-02-15 01:27:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:15,007 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-02-15 01:27:15,007 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) [2022-02-15 01:27:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-02-15 01:27:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 01:27:15,013 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:15,013 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] [2022-02-15 01:27:15,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 01:27:15,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1926704683, now seen corresponding path program 6 times [2022-02-15 01:27:15,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:15,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951636966] [2022-02-15 01:27:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:15,017 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:15,017 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:15,018 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-02-15 01:27:15,168 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:15,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951636966] [2022-02-15 01:27:15,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1951636966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:15,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:15,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:27:15,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959346253] [2022-02-15 01:27:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:15,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:27:15,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:27:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:27:15,170 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) [2022-02-15 01:27:15,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:15,493 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2022-02-15 01:27:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:27:15,494 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 [2022-02-15 01:27:15,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:15,495 INFO L225 Difference]: With dead ends: 92 [2022-02-15 01:27:15,495 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 01:27:15,495 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 [2022-02-15 01:27:15,496 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:15,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 61 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:27:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 01:27:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 50. [2022-02-15 01:27:15,505 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) [2022-02-15 01:27:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-02-15 01:27:15,506 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 61 [2022-02-15 01:27:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:15,506 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-02-15 01:27:15,506 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) [2022-02-15 01:27:15,506 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-02-15 01:27:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 01:27:15,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:15,507 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] [2022-02-15 01:27:15,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 01:27:15,507 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:15,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1064833926, now seen corresponding path program 7 times [2022-02-15 01:27:15,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:15,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685243667] [2022-02-15 01:27:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:15,510 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:15,510 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:15,511 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-15 01:27:15,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:15,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685243667] [2022-02-15 01:27:15,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [685243667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:15,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:15,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:27:15,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354419815] [2022-02-15 01:27:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:15,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:27:15,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:27:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:27:15,649 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) [2022-02-15 01:27:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:16,060 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2022-02-15 01:27:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 01:27:16,061 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 [2022-02-15 01:27:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:16,062 INFO L225 Difference]: With dead ends: 100 [2022-02-15 01:27:16,062 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 01:27:16,062 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 [2022-02-15 01:27:16,062 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-02-15 01:27:16,063 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] [2022-02-15 01:27:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 01:27:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2022-02-15 01:27:16,075 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) [2022-02-15 01:27:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-02-15 01:27:16,076 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 69 [2022-02-15 01:27:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:16,076 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-02-15 01:27:16,077 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) [2022-02-15 01:27:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-02-15 01:27:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 01:27:16,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:16,078 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] [2022-02-15 01:27:16,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 01:27:16,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1471639009, now seen corresponding path program 8 times [2022-02-15 01:27:16,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:16,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126315392] [2022-02-15 01:27:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:16,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:16,085 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:16,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:16,087 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-15 01:27:16,296 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:16,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126315392] [2022-02-15 01:27:16,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [126315392] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:16,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:16,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:27:16,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729866710] [2022-02-15 01:27:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:16,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:27:16,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:27:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:27:16,303 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) [2022-02-15 01:27:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:16,732 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-02-15 01:27:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:27:16,733 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 [2022-02-15 01:27:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:16,734 INFO L225 Difference]: With dead ends: 108 [2022-02-15 01:27:16,734 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 01:27:16,735 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 [2022-02-15 01:27:16,735 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, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:16,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 52 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:27:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 01:27:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2022-02-15 01:27:16,749 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) [2022-02-15 01:27:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-02-15 01:27:16,749 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 77 [2022-02-15 01:27:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:16,750 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-02-15 01:27:16,750 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) [2022-02-15 01:27:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-02-15 01:27:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 01:27:16,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:16,751 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] [2022-02-15 01:27:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 01:27:16,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2075116228, now seen corresponding path program 9 times [2022-02-15 01:27:16,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:16,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903091139] [2022-02-15 01:27:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:16,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:16,754 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:16,756 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-02-15 01:27:16,988 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:16,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903091139] [2022-02-15 01:27:16,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1903091139] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:16,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:16,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:27:16,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265757000] [2022-02-15 01:27:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:16,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:27:16,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:27:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:27:16,989 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) [2022-02-15 01:27:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:17,572 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2022-02-15 01:27:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:27:17,572 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 [2022-02-15 01:27:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:17,573 INFO L225 Difference]: With dead ends: 116 [2022-02-15 01:27:17,573 INFO L226 Difference]: Without dead ends: 105 [2022-02-15 01:27:17,574 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 [2022-02-15 01:27:17,574 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 103 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:17,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 80 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:27:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-15 01:27:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2022-02-15 01:27:17,584 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) [2022-02-15 01:27:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-02-15 01:27:17,584 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 85 [2022-02-15 01:27:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:17,585 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-02-15 01:27:17,585 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) [2022-02-15 01:27:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-02-15 01:27:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 01:27:17,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:17,589 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] [2022-02-15 01:27:17,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 01:27:17,590 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1560444521, now seen corresponding path program 10 times [2022-02-15 01:27:17,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:17,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689982951] [2022-02-15 01:27:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:17,593 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:17,593 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:17,594 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-15 01:27:17,844 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:17,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689982951] [2022-02-15 01:27:17,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1689982951] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:17,844 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:17,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:27:17,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448441664] [2022-02-15 01:27:17,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:17,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:27:17,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:27:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:27:17,846 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) [2022-02-15 01:27:18,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:18,584 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2022-02-15 01:27:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:27:18,585 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 [2022-02-15 01:27:18,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:18,588 INFO L225 Difference]: With dead ends: 124 [2022-02-15 01:27:18,588 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 01:27:18,588 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 [2022-02-15 01:27:18,589 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-02-15 01:27:18,589 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] [2022-02-15 01:27:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 01:27:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 66. [2022-02-15 01:27:18,607 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) [2022-02-15 01:27:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-02-15 01:27:18,607 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 93 [2022-02-15 01:27:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:18,608 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-02-15 01:27:18,608 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) [2022-02-15 01:27:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-02-15 01:27:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 01:27:18,608 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:18,609 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] [2022-02-15 01:27:18,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 01:27:18,609 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1501938958, now seen corresponding path program 11 times [2022-02-15 01:27:18,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:18,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460308046] [2022-02-15 01:27:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:18,612 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:18,613 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:18,615 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-02-15 01:27:18,836 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:18,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460308046] [2022-02-15 01:27:18,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [460308046] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:18,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:18,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:27:18,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667066701] [2022-02-15 01:27:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:18,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:27:18,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:27:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:27:18,837 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) [2022-02-15 01:27:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:19,449 INFO L93 Difference]: Finished difference Result 132 states and 158 transitions. [2022-02-15 01:27:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 01:27:19,449 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 [2022-02-15 01:27:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:19,450 INFO L225 Difference]: With dead ends: 132 [2022-02-15 01:27:19,450 INFO L226 Difference]: Without dead ends: 121 [2022-02-15 01:27:19,451 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 [2022-02-15 01:27:19,451 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:19,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 56 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:27:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-15 01:27:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 70. [2022-02-15 01:27:19,462 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) [2022-02-15 01:27:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2022-02-15 01:27:19,462 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 101 [2022-02-15 01:27:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2022-02-15 01:27:19,463 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) [2022-02-15 01:27:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2022-02-15 01:27:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-15 01:27:19,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:19,463 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] [2022-02-15 01:27:19,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 01:27:19,464 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1769903795, now seen corresponding path program 12 times [2022-02-15 01:27:19,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:19,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336010382] [2022-02-15 01:27:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:19,466 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:19,466 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:19,467 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-15 01:27:19,692 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:19,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336010382] [2022-02-15 01:27:19,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [336010382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:19,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:19,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:27:19,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778514173] [2022-02-15 01:27:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:19,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:27:19,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:27:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:27:19,694 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) [2022-02-15 01:27:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:20,504 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2022-02-15 01:27:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:27:20,504 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 [2022-02-15 01:27:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:20,505 INFO L225 Difference]: With dead ends: 140 [2022-02-15 01:27:20,505 INFO L226 Difference]: Without dead ends: 129 [2022-02-15 01:27:20,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:27:20,506 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:20,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 74 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 01:27:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-15 01:27:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 74. [2022-02-15 01:27:20,521 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) [2022-02-15 01:27:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2022-02-15 01:27:20,521 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 109 [2022-02-15 01:27:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:20,522 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2022-02-15 01:27:20,522 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) [2022-02-15 01:27:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2022-02-15 01:27:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-15 01:27:20,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:20,523 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] [2022-02-15 01:27:20,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 01:27:20,523 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1882321752, now seen corresponding path program 13 times [2022-02-15 01:27:20,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:20,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158088306] [2022-02-15 01:27:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:20,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:20,525 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:20,527 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-15 01:27:20,793 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:20,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158088306] [2022-02-15 01:27:20,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [158088306] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:20,793 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:20,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:27:20,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884007815] [2022-02-15 01:27:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:27:20,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:27:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:27:20,794 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) [2022-02-15 01:27:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:21,806 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2022-02-15 01:27:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:27:21,807 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 [2022-02-15 01:27:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:21,808 INFO L225 Difference]: With dead ends: 148 [2022-02-15 01:27:21,808 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 01:27:21,808 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 [2022-02-15 01:27:21,809 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 129 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-02-15 01:27:21,809 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] [2022-02-15 01:27:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 01:27:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2022-02-15 01:27:21,821 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) [2022-02-15 01:27:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2022-02-15 01:27:21,822 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 117 [2022-02-15 01:27:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:21,822 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2022-02-15 01:27:21,822 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) [2022-02-15 01:27:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2022-02-15 01:27:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-15 01:27:21,823 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:21,823 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] [2022-02-15 01:27:21,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 01:27:21,823 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1004854013, now seen corresponding path program 14 times [2022-02-15 01:27:21,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:21,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125908528] [2022-02-15 01:27:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:21,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:21,826 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:21,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:21,827 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-02-15 01:27:22,147 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:22,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125908528] [2022-02-15 01:27:22,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2125908528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:22,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:22,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 01:27:22,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098261214] [2022-02-15 01:27:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:22,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 01:27:22,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 01:27:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-02-15 01:27:22,149 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) [2022-02-15 01:27:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:23,164 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2022-02-15 01:27:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:27:23,164 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 [2022-02-15 01:27:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:23,165 INFO L225 Difference]: With dead ends: 156 [2022-02-15 01:27:23,165 INFO L226 Difference]: Without dead ends: 145 [2022-02-15 01:27:23,166 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 [2022-02-15 01:27:23,166 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 153 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-02-15 01:27:23,166 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] [2022-02-15 01:27:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-15 01:27:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2022-02-15 01:27:23,179 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) [2022-02-15 01:27:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2022-02-15 01:27:23,180 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 125 [2022-02-15 01:27:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:23,180 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2022-02-15 01:27:23,180 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) [2022-02-15 01:27:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2022-02-15 01:27:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 01:27:23,181 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:23,181 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] [2022-02-15 01:27:23,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 01:27:23,181 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2049159774, now seen corresponding path program 15 times [2022-02-15 01:27:23,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:23,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621305467] [2022-02-15 01:27:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:23,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:23,184 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:23,185 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-15 01:27:23,469 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:23,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621305467] [2022-02-15 01:27:23,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [621305467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:23,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:23,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:27:23,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198200427] [2022-02-15 01:27:23,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:23,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:27:23,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:23,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:27:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:27:23,470 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) [2022-02-15 01:27:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:24,627 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2022-02-15 01:27:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 01:27:24,628 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 [2022-02-15 01:27:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:24,629 INFO L225 Difference]: With dead ends: 164 [2022-02-15 01:27:24,629 INFO L226 Difference]: Without dead ends: 153 [2022-02-15 01:27:24,630 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 [2022-02-15 01:27:24,630 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 159 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-02-15 01:27:24,630 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] [2022-02-15 01:27:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-02-15 01:27:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2022-02-15 01:27:24,658 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) [2022-02-15 01:27:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2022-02-15 01:27:24,659 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 133 [2022-02-15 01:27:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:24,659 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2022-02-15 01:27:24,660 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) [2022-02-15 01:27:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2022-02-15 01:27:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-15 01:27:24,661 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:24,661 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] [2022-02-15 01:27:24,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 01:27:24,661 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 228766905, now seen corresponding path program 16 times [2022-02-15 01:27:24,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:24,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749586000] [2022-02-15 01:27:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:24,663 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:24,663 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:24,664 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-02-15 01:27:24,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:24,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749586000] [2022-02-15 01:27:24,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1749586000] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:24,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:24,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:27:24,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153607374] [2022-02-15 01:27:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:27:24,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:27:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:27:24,948 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) [2022-02-15 01:27:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:26,417 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2022-02-15 01:27:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:27:26,417 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 [2022-02-15 01:27:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:26,418 INFO L225 Difference]: With dead ends: 172 [2022-02-15 01:27:26,418 INFO L226 Difference]: Without dead ends: 161 [2022-02-15 01:27:26,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:27:26,419 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 155 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-15 01:27:26,419 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] [2022-02-15 01:27:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-15 01:27:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 90. [2022-02-15 01:27:26,436 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) [2022-02-15 01:27:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-02-15 01:27:26,440 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 141 [2022-02-15 01:27:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:26,442 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-02-15 01:27:26,443 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) [2022-02-15 01:27:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-02-15 01:27:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-02-15 01:27:26,444 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:26,444 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] [2022-02-15 01:27:26,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 01:27:26,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash -279761900, now seen corresponding path program 17 times [2022-02-15 01:27:26,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:26,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100383372] [2022-02-15 01:27:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:26,447 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:26,447 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:26,448 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-15 01:27:26,746 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:26,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100383372] [2022-02-15 01:27:26,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2100383372] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:26,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:26,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 01:27:26,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996913771] [2022-02-15 01:27:26,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:26,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 01:27:26,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 01:27:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:27:26,747 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) [2022-02-15 01:27:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:28,066 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2022-02-15 01:27:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:27:28,066 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 [2022-02-15 01:27:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:28,067 INFO L225 Difference]: With dead ends: 180 [2022-02-15 01:27:28,067 INFO L226 Difference]: Without dead ends: 169 [2022-02-15 01:27:28,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:27:28,068 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 183 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:28,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 104 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 01:27:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-15 01:27:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 94. [2022-02-15 01:27:28,085 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) [2022-02-15 01:27:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2022-02-15 01:27:28,086 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 149 [2022-02-15 01:27:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:28,086 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2022-02-15 01:27:28,086 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) [2022-02-15 01:27:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2022-02-15 01:27:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-02-15 01:27:28,087 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:28,087 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] [2022-02-15 01:27:28,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 01:27:28,088 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1527768977, now seen corresponding path program 18 times [2022-02-15 01:27:28,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:28,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13899918] [2022-02-15 01:27:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:28,090 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:28,090 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:28,092 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-02-15 01:27:28,436 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:28,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13899918] [2022-02-15 01:27:28,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [13899918] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:28,437 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:28,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:27:28,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744720502] [2022-02-15 01:27:28,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:28,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:27:28,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:27:28,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:27:28,438 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) [2022-02-15 01:27:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:29,938 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2022-02-15 01:27:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:27:29,938 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 [2022-02-15 01:27:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:29,940 INFO L225 Difference]: With dead ends: 188 [2022-02-15 01:27:29,940 INFO L226 Difference]: Without dead ends: 177 [2022-02-15 01:27:29,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:27:29,942 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:29,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 77 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 01:27:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-15 01:27:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2022-02-15 01:27:29,964 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) [2022-02-15 01:27:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2022-02-15 01:27:29,967 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 157 [2022-02-15 01:27:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:29,968 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2022-02-15 01:27:29,969 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) [2022-02-15 01:27:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2022-02-15 01:27:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-02-15 01:27:29,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:29,971 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] [2022-02-15 01:27:29,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 01:27:29,971 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash -919307830, now seen corresponding path program 19 times [2022-02-15 01:27:29,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:29,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159027899] [2022-02-15 01:27:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:29,978 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:29,979 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:29,980 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-02-15 01:27:30,358 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:30,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159027899] [2022-02-15 01:27:30,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1159027899] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:30,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:30,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:27:30,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227412829] [2022-02-15 01:27:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:30,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:27:30,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:27:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:27:30,361 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) [2022-02-15 01:27:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:32,066 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2022-02-15 01:27:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 01:27:32,067 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 [2022-02-15 01:27:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:32,072 INFO L225 Difference]: With dead ends: 196 [2022-02-15 01:27:32,072 INFO L226 Difference]: Without dead ends: 185 [2022-02-15 01:27:32,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 01:27:32,079 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 201 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-02-15 01:27:32,079 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] [2022-02-15 01:27:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-02-15 01:27:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 102. [2022-02-15 01:27:32,101 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) [2022-02-15 01:27:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2022-02-15 01:27:32,102 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 165 [2022-02-15 01:27:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:32,102 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2022-02-15 01:27:32,102 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) [2022-02-15 01:27:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2022-02-15 01:27:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-02-15 01:27:32,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:32,105 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] [2022-02-15 01:27:32,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 01:27:32,106 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash 198922277, now seen corresponding path program 20 times [2022-02-15 01:27:32,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:32,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466723016] [2022-02-15 01:27:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:32,109 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:32,110 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:32,112 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-15 01:27:32,516 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:32,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466723016] [2022-02-15 01:27:32,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466723016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:32,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:32,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:27:32,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158235746] [2022-02-15 01:27:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:32,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:27:32,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:27:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:27:32,517 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) [2022-02-15 01:27:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:34,273 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2022-02-15 01:27:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:27:34,274 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 [2022-02-15 01:27:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:34,276 INFO L225 Difference]: With dead ends: 204 [2022-02-15 01:27:34,276 INFO L226 Difference]: Without dead ends: 193 [2022-02-15 01:27:34,278 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 [2022-02-15 01:27:34,280 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 [2022-02-15 01:27:34,280 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] [2022-02-15 01:27:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-15 01:27:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 106. [2022-02-15 01:27:34,311 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) [2022-02-15 01:27:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-02-15 01:27:34,313 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 173 [2022-02-15 01:27:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:34,313 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-02-15 01:27:34,313 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) [2022-02-15 01:27:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-02-15 01:27:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-15 01:27:34,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:34,314 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] [2022-02-15 01:27:34,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 01:27:34,314 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash 832543616, now seen corresponding path program 21 times [2022-02-15 01:27:34,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:34,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363089842] [2022-02-15 01:27:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:34,321 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:34,321 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:34,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:34,322 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-02-15 01:27:34,726 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:34,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363089842] [2022-02-15 01:27:34,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1363089842] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:34,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:34,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:27:34,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865751287] [2022-02-15 01:27:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:34,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:27:34,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:27:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:27:34,728 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) [2022-02-15 01:27:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:36,993 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2022-02-15 01:27:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 01:27:36,993 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 [2022-02-15 01:27:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:36,995 INFO L225 Difference]: With dead ends: 212 [2022-02-15 01:27:36,995 INFO L226 Difference]: Without dead ends: 201 [2022-02-15 01:27:36,997 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 [2022-02-15 01:27:36,997 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:36,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 191 Invalid, 4990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4768 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 01:27:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-02-15 01:27:37,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 110. [2022-02-15 01:27:37,023 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) [2022-02-15 01:27:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2022-02-15 01:27:37,024 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 181 [2022-02-15 01:27:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:37,025 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2022-02-15 01:27:37,025 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) [2022-02-15 01:27:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2022-02-15 01:27:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-02-15 01:27:37,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:37,027 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] [2022-02-15 01:27:37,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 01:27:37,027 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash 339499995, now seen corresponding path program 22 times [2022-02-15 01:27:37,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:37,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021425512] [2022-02-15 01:27:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:37,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:37,031 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:37,032 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-02-15 01:27:37,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:37,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021425512] [2022-02-15 01:27:37,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021425512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:37,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:37,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:27:37,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873135428] [2022-02-15 01:27:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:37,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:27:37,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:27:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:27:37,433 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) [2022-02-15 01:27:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:39,476 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2022-02-15 01:27:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 01:27:39,477 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 [2022-02-15 01:27:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:39,478 INFO L225 Difference]: With dead ends: 220 [2022-02-15 01:27:39,478 INFO L226 Difference]: Without dead ends: 209 [2022-02-15 01:27:39,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:27:39,480 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 245 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:39,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 89 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 4004 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 01:27:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-15 01:27:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 114. [2022-02-15 01:27:39,513 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) [2022-02-15 01:27:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-02-15 01:27:39,514 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 189 [2022-02-15 01:27:39,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:39,515 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-02-15 01:27:39,515 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) [2022-02-15 01:27:39,515 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-02-15 01:27:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-02-15 01:27:39,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:39,516 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] [2022-02-15 01:27:39,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 01:27:39,516 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1569943242, now seen corresponding path program 23 times [2022-02-15 01:27:39,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:39,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365133388] [2022-02-15 01:27:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:39,518 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:39,519 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:39,520 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-02-15 01:27:40,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:40,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365133388] [2022-02-15 01:27:40,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [365133388] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:40,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:40,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 01:27:40,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997540177] [2022-02-15 01:27:40,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:40,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 01:27:40,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 01:27:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:27:40,054 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) [2022-02-15 01:27:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:42,787 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2022-02-15 01:27:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 01:27:42,787 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 [2022-02-15 01:27:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:42,788 INFO L225 Difference]: With dead ends: 228 [2022-02-15 01:27:42,788 INFO L226 Difference]: Without dead ends: 217 [2022-02-15 01:27:42,789 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 [2022-02-15 01:27:42,790 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 227 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5167 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:42,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 162 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5167 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 01:27:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-15 01:27:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 118. [2022-02-15 01:27:42,819 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) [2022-02-15 01:27:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2022-02-15 01:27:42,820 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 197 [2022-02-15 01:27:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:42,820 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2022-02-15 01:27:42,820 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) [2022-02-15 01:27:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2022-02-15 01:27:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-02-15 01:27:42,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:42,821 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] [2022-02-15 01:27:42,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 01:27:42,821 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash -538231919, now seen corresponding path program 24 times [2022-02-15 01:27:42,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:42,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593421124] [2022-02-15 01:27:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:42,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:42,832 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:42,840 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:27:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-02-15 01:27:43,792 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:43,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593421124] [2022-02-15 01:27:43,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1593421124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:43,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:43,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:27:43,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089089476] [2022-02-15 01:27:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:43,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:27:43,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:27:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:27:43,795 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) [2022-02-15 01:27:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:47,111 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2022-02-15 01:27:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:27:47,112 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 [2022-02-15 01:27:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:47,113 INFO L225 Difference]: With dead ends: 236 [2022-02-15 01:27:47,113 INFO L226 Difference]: Without dead ends: 225 [2022-02-15 01:27:47,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 01:27:47,114 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 217 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6166 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:47,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 215 Invalid, 6418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 6166 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 01:27:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-15 01:27:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 122. [2022-02-15 01:27:47,158 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) [2022-02-15 01:27:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2022-02-15 01:27:47,158 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 205 [2022-02-15 01:27:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:47,159 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2022-02-15 01:27:47,159 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) [2022-02-15 01:27:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2022-02-15 01:27:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-02-15 01:27:47,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:47,160 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] [2022-02-15 01:27:47,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 01:27:47,161 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -445424916, now seen corresponding path program 25 times [2022-02-15 01:27:47,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:47,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357975733] [2022-02-15 01:27:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:47,168 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:47,168 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:47,169 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:27:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:27:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-15 01:27:47,802 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:47,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357975733] [2022-02-15 01:27:47,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1357975733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:47,802 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:47,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:27:47,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828426190] [2022-02-15 01:27:47,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:47,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:27:47,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:27:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:27:47,805 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) [2022-02-15 01:27:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:50,415 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2022-02-15 01:27:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:27:50,415 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 [2022-02-15 01:27:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:50,416 INFO L225 Difference]: With dead ends: 244 [2022-02-15 01:27:50,416 INFO L226 Difference]: Without dead ends: 233 [2022-02-15 01:27:50,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=2736, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 01:27:50,418 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 247 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:50,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 168 Invalid, 6285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 01:27:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-02-15 01:27:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 126. [2022-02-15 01:27:50,445 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) [2022-02-15 01:27:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2022-02-15 01:27:50,446 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 213 [2022-02-15 01:27:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:50,446 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2022-02-15 01:27:50,446 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) [2022-02-15 01:27:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2022-02-15 01:27:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-02-15 01:27:50,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:50,447 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] [2022-02-15 01:27:50,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 01:27:50,447 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:50,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash -524292281, now seen corresponding path program 26 times [2022-02-15 01:27:50,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:50,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923200309] [2022-02-15 01:27:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:50,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:50,450 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:50,451 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:27:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:27:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:27:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-02-15 01:27:50,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:50,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923200309] [2022-02-15 01:27:50,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [923200309] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:50,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:50,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 01:27:50,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232448953] [2022-02-15 01:27:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:50,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 01:27:50,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 01:27:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:27:50,948 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) [2022-02-15 01:27:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:53,744 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2022-02-15 01:27:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:27:53,745 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 [2022-02-15 01:27:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:53,746 INFO L225 Difference]: With dead ends: 252 [2022-02-15 01:27:53,746 INFO L226 Difference]: Without dead ends: 241 [2022-02-15 01:27:53,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=2949, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 01:27:53,747 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 263 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6253 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:53,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 156 Invalid, 6555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 6253 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 01:27:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-02-15 01:27:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 130. [2022-02-15 01:27:53,779 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) [2022-02-15 01:27:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2022-02-15 01:27:53,780 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 221 [2022-02-15 01:27:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:53,780 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2022-02-15 01:27:53,780 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) [2022-02-15 01:27:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2022-02-15 01:27:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-02-15 01:27:53,781 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:53,781 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] [2022-02-15 01:27:53,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 01:27:53,781 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash 344717474, now seen corresponding path program 27 times [2022-02-15 01:27:53,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:53,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974347438] [2022-02-15 01:27:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:53,792 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:53,792 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:53,793 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:27:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:27:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:27:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:27:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-02-15 01:27:54,349 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:54,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974347438] [2022-02-15 01:27:54,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1974347438] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:54,349 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:54,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 01:27:54,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146238425] [2022-02-15 01:27:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:54,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 01:27:54,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 01:27:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:27:54,351 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) [2022-02-15 01:27:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:57,025 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2022-02-15 01:27:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 01:27:57,025 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 [2022-02-15 01:27:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:57,027 INFO L225 Difference]: With dead ends: 260 [2022-02-15 01:27:57,027 INFO L226 Difference]: Without dead ends: 249 [2022-02-15 01:27:57,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=3170, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 01:27:57,028 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 241 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7744 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:57,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 239 Invalid, 8026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 7744 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 01:27:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-15 01:27:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 134. [2022-02-15 01:27:57,097 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) [2022-02-15 01:27:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-02-15 01:27:57,098 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 229 [2022-02-15 01:27:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:57,098 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-02-15 01:27:57,098 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) [2022-02-15 01:27:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-02-15 01:27:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-02-15 01:27:57,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:57,116 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] [2022-02-15 01:27:57,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 01:27:57,116 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash -661489923, now seen corresponding path program 28 times [2022-02-15 01:27:57,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:57,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417804678] [2022-02-15 01:27:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:57,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:57,121 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:27:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:57,124 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:27:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:27:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:27:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:27:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:27:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:27:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:27:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:27:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:27:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:27:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:27:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:27:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:27:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:27:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:27:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:27:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:27:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:27:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:27:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:27:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:27:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:27:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:27:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:27:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:27:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:27:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:27:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:27:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:27:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-02-15 01:27:57,805 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:57,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417804678] [2022-02-15 01:27:57,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417804678] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:57,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:57,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:27:57,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801177444] [2022-02-15 01:27:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:57,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:27:57,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:27:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:27:57,807 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) [2022-02-15 01:28:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:01,298 INFO L93 Difference]: Finished difference Result 268 states and 328 transitions. [2022-02-15 01:28:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 01:28:01,299 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 [2022-02-15 01:28:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:01,302 INFO L225 Difference]: With dead ends: 268 [2022-02-15 01:28:01,302 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 01:28:01,304 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 [2022-02-15 01:28:01,305 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 259 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 7975 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:01,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 222 Invalid, 8277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 7975 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 01:28:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 01:28:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 138. [2022-02-15 01:28:01,358 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) [2022-02-15 01:28:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2022-02-15 01:28:01,359 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 237 [2022-02-15 01:28:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:01,359 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2022-02-15 01:28:01,359 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) [2022-02-15 01:28:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2022-02-15 01:28:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-02-15 01:28:01,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:01,360 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] [2022-02-15 01:28:01,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 01:28:01,361 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1718719912, now seen corresponding path program 29 times [2022-02-15 01:28:01,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:01,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015247556] [2022-02-15 01:28:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:01,363 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:01,363 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:01,365 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-02-15 01:28:01,997 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:01,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015247556] [2022-02-15 01:28:01,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2015247556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:01,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:01,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 01:28:01,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589094037] [2022-02-15 01:28:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 01:28:01,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 01:28:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:28:01,998 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) [2022-02-15 01:28:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:05,278 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2022-02-15 01:28:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:28:05,279 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 [2022-02-15 01:28:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:05,281 INFO L225 Difference]: With dead ends: 276 [2022-02-15 01:28:05,281 INFO L226 Difference]: Without dead ends: 265 [2022-02-15 01:28:05,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=3636, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 01:28:05,282 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 291 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7723 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:05,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 170 Invalid, 8059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 7723 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 01:28:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-02-15 01:28:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 142. [2022-02-15 01:28:05,322 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) [2022-02-15 01:28:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2022-02-15 01:28:05,323 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 245 [2022-02-15 01:28:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:05,324 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2022-02-15 01:28:05,324 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) [2022-02-15 01:28:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2022-02-15 01:28:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-02-15 01:28:05,325 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:05,325 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] [2022-02-15 01:28:05,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 01:28:05,325 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash -650456397, now seen corresponding path program 30 times [2022-02-15 01:28:05,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:05,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209581480] [2022-02-15 01:28:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:05,327 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:05,327 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:05,329 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-15 01:28:06,017 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:06,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209581480] [2022-02-15 01:28:06,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1209581480] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:06,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:06,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:28:06,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602704817] [2022-02-15 01:28:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:06,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:28:06,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:28:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 01:28:06,018 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) [2022-02-15 01:28:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:10,152 INFO L93 Difference]: Finished difference Result 284 states and 348 transitions. [2022-02-15 01:28:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 01:28:10,152 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 [2022-02-15 01:28:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:10,156 INFO L225 Difference]: With dead ends: 284 [2022-02-15 01:28:10,156 INFO L226 Difference]: Without dead ends: 273 [2022-02-15 01:28:10,157 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 [2022-02-15 01:28:10,157 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 283 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 8863 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:10,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 218 Invalid, 9193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 8863 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 01:28:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-02-15 01:28:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 146. [2022-02-15 01:28:10,196 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) [2022-02-15 01:28:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2022-02-15 01:28:10,197 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 253 [2022-02-15 01:28:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:10,198 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2022-02-15 01:28:10,198 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) [2022-02-15 01:28:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2022-02-15 01:28:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-02-15 01:28:10,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:10,199 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] [2022-02-15 01:28:10,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 01:28:10,199 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash 777170958, now seen corresponding path program 31 times [2022-02-15 01:28:10,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:10,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136487404] [2022-02-15 01:28:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:10,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:10,210 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:10,211 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-02-15 01:28:10,902 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:10,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136487404] [2022-02-15 01:28:10,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1136487404] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:10,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:10,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 01:28:10,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347662756] [2022-02-15 01:28:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 01:28:10,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 01:28:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:28:10,904 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) [2022-02-15 01:28:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:14,944 INFO L93 Difference]: Finished difference Result 292 states and 358 transitions. [2022-02-15 01:28:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 01:28:14,944 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 [2022-02-15 01:28:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:14,946 INFO L225 Difference]: With dead ends: 292 [2022-02-15 01:28:14,946 INFO L226 Difference]: Without dead ends: 281 [2022-02-15 01:28:14,946 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 [2022-02-15 01:28:14,946 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 327 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 8157 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:14,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 136 Invalid, 8533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 8157 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 01:28:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-02-15 01:28:15,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 150. [2022-02-15 01:28:15,015 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) [2022-02-15 01:28:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2022-02-15 01:28:15,016 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 261 [2022-02-15 01:28:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:15,017 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2022-02-15 01:28:15,017 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) [2022-02-15 01:28:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2022-02-15 01:28:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-02-15 01:28:15,018 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:15,018 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] [2022-02-15 01:28:15,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 01:28:15,018 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1150354025, now seen corresponding path program 32 times [2022-02-15 01:28:15,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:15,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978238389] [2022-02-15 01:28:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:15,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:15,022 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:15,023 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-02-15 01:28:15,864 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:15,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978238389] [2022-02-15 01:28:15,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978238389] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:15,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:15,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 01:28:15,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352518798] [2022-02-15 01:28:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:15,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 01:28:15,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 01:28:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 01:28:15,865 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) [2022-02-15 01:28:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:20,354 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-02-15 01:28:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 01:28:20,354 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 [2022-02-15 01:28:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:20,356 INFO L225 Difference]: With dead ends: 300 [2022-02-15 01:28:20,356 INFO L226 Difference]: Without dead ends: 289 [2022-02-15 01:28:20,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=297, Invalid=4395, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 01:28:20,357 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 299 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10099 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:20,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 234 Invalid, 10449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 10099 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 01:28:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-02-15 01:28:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 154. [2022-02-15 01:28:20,402 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) [2022-02-15 01:28:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 187 transitions. [2022-02-15 01:28:20,403 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 187 transitions. Word has length 269 [2022-02-15 01:28:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:20,403 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 187 transitions. [2022-02-15 01:28:20,404 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) [2022-02-15 01:28:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 187 transitions. [2022-02-15 01:28:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-02-15 01:28:20,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:20,405 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] [2022-02-15 01:28:20,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 01:28:20,405 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -592393788, now seen corresponding path program 33 times [2022-02-15 01:28:20,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:20,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302632644] [2022-02-15 01:28:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:20,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:20,408 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:20,409 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-02-15 01:28:21,159 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:21,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302632644] [2022-02-15 01:28:21,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302632644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:21,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:21,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 01:28:21,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119179187] [2022-02-15 01:28:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:21,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 01:28:21,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 01:28:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:28:21,160 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) [2022-02-15 01:28:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:26,005 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2022-02-15 01:28:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 01:28:26,005 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 [2022-02-15 01:28:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:26,009 INFO L225 Difference]: With dead ends: 308 [2022-02-15 01:28:26,009 INFO L226 Difference]: Without dead ends: 297 [2022-02-15 01:28:26,009 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 [2022-02-15 01:28:26,011 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 305 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10824 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:26,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 247 Invalid, 11182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 10824 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-15 01:28:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-15 01:28:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 158. [2022-02-15 01:28:26,070 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) [2022-02-15 01:28:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 192 transitions. [2022-02-15 01:28:26,072 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 192 transitions. Word has length 277 [2022-02-15 01:28:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:26,074 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 192 transitions. [2022-02-15 01:28:26,074 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) [2022-02-15 01:28:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 192 transitions. [2022-02-15 01:28:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-02-15 01:28:26,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:26,075 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] [2022-02-15 01:28:26,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 01:28:26,075 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash -865270241, now seen corresponding path program 34 times [2022-02-15 01:28:26,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:26,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326356449] [2022-02-15 01:28:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:26,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:26,086 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:26,087 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-02-15 01:28:26,883 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:26,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326356449] [2022-02-15 01:28:26,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1326356449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:26,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:26,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 01:28:26,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147017254] [2022-02-15 01:28:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:26,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 01:28:26,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 01:28:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 01:28:26,884 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) [2022-02-15 01:28:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:31,516 INFO L93 Difference]: Finished difference Result 316 states and 388 transitions. [2022-02-15 01:28:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 01:28:31,517 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 [2022-02-15 01:28:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:31,518 INFO L225 Difference]: With dead ends: 316 [2022-02-15 01:28:31,518 INFO L226 Difference]: Without dead ends: 305 [2022-02-15 01:28:31,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=4941, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 01:28:31,519 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 353 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9914 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:31,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 155 Invalid, 10322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 9914 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 01:28:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-02-15 01:28:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 162. [2022-02-15 01:28:31,575 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) [2022-02-15 01:28:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2022-02-15 01:28:31,576 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 285 [2022-02-15 01:28:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:31,576 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2022-02-15 01:28:31,576 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) [2022-02-15 01:28:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2022-02-15 01:28:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-02-15 01:28:31,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:31,578 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] [2022-02-15 01:28:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 01:28:31,578 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash -25118854, now seen corresponding path program 35 times [2022-02-15 01:28:31,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:31,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468664777] [2022-02-15 01:28:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:31,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:31,585 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:31,587 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:28:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-15 01:28:32,550 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:32,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468664777] [2022-02-15 01:28:32,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [468664777] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:32,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:32,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 01:28:32,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518435109] [2022-02-15 01:28:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:32,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 01:28:32,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 01:28:32,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:28:32,553 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) [2022-02-15 01:28:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:37,871 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2022-02-15 01:28:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 01:28:37,872 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 [2022-02-15 01:28:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:37,873 INFO L225 Difference]: With dead ends: 324 [2022-02-15 01:28:37,874 INFO L226 Difference]: Without dead ends: 313 [2022-02-15 01:28:37,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=5226, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 01:28:37,875 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 331 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 11779 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:37,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 238 Invalid, 12167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 11779 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-15 01:28:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-02-15 01:28:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 166. [2022-02-15 01:28:37,939 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) [2022-02-15 01:28:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2022-02-15 01:28:37,940 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 293 [2022-02-15 01:28:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:37,940 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2022-02-15 01:28:37,941 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) [2022-02-15 01:28:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2022-02-15 01:28:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-02-15 01:28:37,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:37,942 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] [2022-02-15 01:28:37,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 01:28:37,942 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1923538389, now seen corresponding path program 36 times [2022-02-15 01:28:37,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:37,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563714484] [2022-02-15 01:28:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:37,945 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:37,946 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:37,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:37,947 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:28:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:28:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-02-15 01:28:38,801 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:38,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563714484] [2022-02-15 01:28:38,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563714484] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:38,801 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:38,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 01:28:38,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521952839] [2022-02-15 01:28:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:38,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 01:28:38,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 01:28:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 01:28:38,803 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) [2022-02-15 01:28:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:43,521 INFO L93 Difference]: Finished difference Result 332 states and 408 transitions. [2022-02-15 01:28:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 01:28:43,530 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 [2022-02-15 01:28:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:43,532 INFO L225 Difference]: With dead ends: 332 [2022-02-15 01:28:43,532 INFO L226 Difference]: Without dead ends: 321 [2022-02-15 01:28:43,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=333, Invalid=5519, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 01:28:43,533 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 373 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11068 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:43,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 161 Invalid, 11500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 11068 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 01:28:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-02-15 01:28:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 170. [2022-02-15 01:28:43,618 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) [2022-02-15 01:28:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2022-02-15 01:28:43,618 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 301 [2022-02-15 01:28:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:43,619 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2022-02-15 01:28:43,619 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) [2022-02-15 01:28:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2022-02-15 01:28:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-02-15 01:28:43,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:43,621 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] [2022-02-15 01:28:43,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 01:28:43,621 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1033533744, now seen corresponding path program 37 times [2022-02-15 01:28:43,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:43,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234752914] [2022-02-15 01:28:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:43,629 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:43,629 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:43,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:43,631 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:28:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:28:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:28:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-02-15 01:28:44,537 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:44,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234752914] [2022-02-15 01:28:44,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [234752914] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:44,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:44,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 01:28:44,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300210659] [2022-02-15 01:28:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:44,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 01:28:44,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 01:28:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:28:44,539 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) [2022-02-15 01:28:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:50,409 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2022-02-15 01:28:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 01:28:50,410 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 [2022-02-15 01:28:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:50,411 INFO L225 Difference]: With dead ends: 340 [2022-02-15 01:28:50,412 INFO L226 Difference]: Without dead ends: 329 [2022-02-15 01:28:50,412 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 [2022-02-15 01:28:50,413 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 331 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 13879 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:50,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 294 Invalid, 14271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 13879 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 01:28:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-02-15 01:28:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 174. [2022-02-15 01:28:50,497 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) [2022-02-15 01:28:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2022-02-15 01:28:50,498 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 309 [2022-02-15 01:28:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:50,498 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2022-02-15 01:28:50,498 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) [2022-02-15 01:28:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2022-02-15 01:28:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-02-15 01:28:50,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:50,500 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] [2022-02-15 01:28:50,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 01:28:50,500 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1995011701, now seen corresponding path program 38 times [2022-02-15 01:28:50,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:50,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432476716] [2022-02-15 01:28:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:50,503 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:50,503 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:50,505 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:28:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:28:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:28:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:28:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-02-15 01:28:51,281 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:51,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432476716] [2022-02-15 01:28:51,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432476716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:51,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:51,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 01:28:51,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375572982] [2022-02-15 01:28:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:51,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 01:28:51,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 01:28:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 01:28:51,283 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) [2022-02-15 01:28:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:56,616 INFO L93 Difference]: Finished difference Result 348 states and 428 transitions. [2022-02-15 01:28:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 01:28:56,617 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 [2022-02-15 01:28:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:56,618 INFO L225 Difference]: With dead ends: 348 [2022-02-15 01:28:56,618 INFO L226 Difference]: Without dead ends: 337 [2022-02-15 01:28:56,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=6129, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 01:28:56,619 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 353 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 14026 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:56,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 267 Invalid, 14442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 14026 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-15 01:28:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-02-15 01:28:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 178. [2022-02-15 01:28:56,676 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) [2022-02-15 01:28:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2022-02-15 01:28:56,677 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 317 [2022-02-15 01:28:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:56,677 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2022-02-15 01:28:56,677 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) [2022-02-15 01:28:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2022-02-15 01:28:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-02-15 01:28:56,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:56,678 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] [2022-02-15 01:28:56,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 01:28:56,679 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1814688026, now seen corresponding path program 39 times [2022-02-15 01:28:56,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:56,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839253169] [2022-02-15 01:28:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:56,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:56,682 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:28:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:56,683 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:28:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:28:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:28:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:28:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:28:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:28:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:28:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:28:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:28:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:28:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:28:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:28:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:28:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:28:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:28:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:28:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:28:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:28:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:28:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:28:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:28:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:28:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:28:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:28:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:28:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:28:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:28:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:28:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:28:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:28:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:28:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:28:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:28:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:28:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:28:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:28:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:28:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:28:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:28:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:28:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-02-15 01:28:57,482 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:57,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839253169] [2022-02-15 01:28:57,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1839253169] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:57,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:57,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 01:28:57,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683212976] [2022-02-15 01:28:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:57,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 01:28:57,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 01:28:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 01:28:57,484 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) [2022-02-15 01:29:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:03,653 INFO L93 Difference]: Finished difference Result 356 states and 438 transitions. [2022-02-15 01:29:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 01:29:03,654 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 [2022-02-15 01:29:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:03,655 INFO L225 Difference]: With dead ends: 356 [2022-02-15 01:29:03,655 INFO L226 Difference]: Without dead ends: 345 [2022-02-15 01:29:03,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=360, Invalid=6446, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 01:29:03,656 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 375 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14165 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:03,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 240 Invalid, 14605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 14165 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-15 01:29:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-02-15 01:29:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 182. [2022-02-15 01:29:03,721 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) [2022-02-15 01:29:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2022-02-15 01:29:03,722 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 325 [2022-02-15 01:29:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2022-02-15 01:29:03,723 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) [2022-02-15 01:29:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2022-02-15 01:29:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-02-15 01:29:03,724 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:03,724 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] [2022-02-15 01:29:03,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 01:29:03,724 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1315698367, now seen corresponding path program 40 times [2022-02-15 01:29:03,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:03,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315677497] [2022-02-15 01:29:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:03,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:03,727 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:03,729 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-15 01:29:04,676 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:04,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315677497] [2022-02-15 01:29:04,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1315677497] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:04,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:04,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 01:29:04,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481691983] [2022-02-15 01:29:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:04,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 01:29:04,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 01:29:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 01:29:04,679 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) [2022-02-15 01:29:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:11,254 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2022-02-15 01:29:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 01:29:11,254 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 [2022-02-15 01:29:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:11,265 INFO L225 Difference]: With dead ends: 364 [2022-02-15 01:29:11,266 INFO L226 Difference]: Without dead ends: 353 [2022-02-15 01:29:11,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=6771, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 01:29:11,268 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 373 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 15388 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:11,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 273 Invalid, 15828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 15388 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-15 01:29:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-15 01:29:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 186. [2022-02-15 01:29:11,332 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) [2022-02-15 01:29:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2022-02-15 01:29:11,333 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 333 [2022-02-15 01:29:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:11,333 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2022-02-15 01:29:11,333 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) [2022-02-15 01:29:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2022-02-15 01:29:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-02-15 01:29:11,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:11,335 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] [2022-02-15 01:29:11,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 01:29:11,335 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1259042972, now seen corresponding path program 41 times [2022-02-15 01:29:11,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:11,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176203562] [2022-02-15 01:29:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:11,338 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:11,338 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:11,339 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-02-15 01:29:12,368 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:12,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176203562] [2022-02-15 01:29:12,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [176203562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:12,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:12,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 01:29:12,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080147514] [2022-02-15 01:29:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:12,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 01:29:12,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 01:29:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 01:29:12,369 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) [2022-02-15 01:29:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:19,066 INFO L93 Difference]: Finished difference Result 372 states and 458 transitions. [2022-02-15 01:29:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 01:29:19,066 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 [2022-02-15 01:29:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:19,068 INFO L225 Difference]: With dead ends: 372 [2022-02-15 01:29:19,068 INFO L226 Difference]: Without dead ends: 361 [2022-02-15 01:29:19,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=378, Invalid=7104, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 01:29:19,068 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 419 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14419 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:19,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 186 Invalid, 14907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 14419 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-02-15 01:29:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-02-15 01:29:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 190. [2022-02-15 01:29:19,159 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) [2022-02-15 01:29:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2022-02-15 01:29:19,160 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 341 [2022-02-15 01:29:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:19,160 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2022-02-15 01:29:19,160 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) [2022-02-15 01:29:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2022-02-15 01:29:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-02-15 01:29:19,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:19,162 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] [2022-02-15 01:29:19,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 01:29:19,162 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -570991369, now seen corresponding path program 42 times [2022-02-15 01:29:19,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:19,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715413586] [2022-02-15 01:29:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:19,165 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:19,165 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:19,167 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:29:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-02-15 01:29:20,030 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:20,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715413586] [2022-02-15 01:29:20,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [715413586] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:20,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:20,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 01:29:20,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757392619] [2022-02-15 01:29:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:20,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 01:29:20,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 01:29:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 01:29:20,033 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) [2022-02-15 01:29:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:27,300 INFO L93 Difference]: Finished difference Result 380 states and 468 transitions. [2022-02-15 01:29:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 01:29:27,301 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 [2022-02-15 01:29:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:27,312 INFO L225 Difference]: With dead ends: 380 [2022-02-15 01:29:27,312 INFO L226 Difference]: Without dead ends: 369 [2022-02-15 01:29:27,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=387, Invalid=7445, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 01:29:27,312 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 403 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 16339 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:27,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 254 Invalid, 16813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 16339 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 01:29:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-15 01:29:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 194. [2022-02-15 01:29:27,409 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) [2022-02-15 01:29:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2022-02-15 01:29:27,410 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 349 [2022-02-15 01:29:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2022-02-15 01:29:27,411 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) [2022-02-15 01:29:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2022-02-15 01:29:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-02-15 01:29:27,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:27,412 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] [2022-02-15 01:29:27,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 01:29:27,413 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash -49105326, now seen corresponding path program 43 times [2022-02-15 01:29:27,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:27,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443748972] [2022-02-15 01:29:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:27,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:27,423 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:27,424 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:29:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:29:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-02-15 01:29:28,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:28,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443748972] [2022-02-15 01:29:28,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1443748972] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:28,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:28,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 01:29:28,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320248728] [2022-02-15 01:29:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:28,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 01:29:28,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 01:29:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:29:28,278 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) [2022-02-15 01:29:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:35,357 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2022-02-15 01:29:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 01:29:35,357 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 [2022-02-15 01:29:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:35,359 INFO L225 Difference]: With dead ends: 388 [2022-02-15 01:29:35,359 INFO L226 Difference]: Without dead ends: 377 [2022-02-15 01:29:35,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=396, Invalid=7794, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 01:29:35,361 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 417 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 16872 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:35,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 247 Invalid, 17362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 16872 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 01:29:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-02-15 01:29:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 198. [2022-02-15 01:29:35,473 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) [2022-02-15 01:29:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2022-02-15 01:29:35,474 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 357 [2022-02-15 01:29:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:35,475 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2022-02-15 01:29:35,475 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) [2022-02-15 01:29:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2022-02-15 01:29:35,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-02-15 01:29:35,477 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:35,478 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] [2022-02-15 01:29:35,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 01:29:35,479 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1343784109, now seen corresponding path program 44 times [2022-02-15 01:29:35,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:35,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129826588] [2022-02-15 01:29:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:35,495 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:35,495 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:35,498 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:29:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:29:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:29:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-02-15 01:29:36,425 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:36,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129826588] [2022-02-15 01:29:36,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [129826588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:36,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:36,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 01:29:36,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177546158] [2022-02-15 01:29:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:36,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 01:29:36,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 01:29:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 01:29:36,438 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) [2022-02-15 01:29:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:43,564 INFO L93 Difference]: Finished difference Result 396 states and 488 transitions. [2022-02-15 01:29:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 01:29:43,566 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 [2022-02-15 01:29:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:43,568 INFO L225 Difference]: With dead ends: 396 [2022-02-15 01:29:43,568 INFO L226 Difference]: Without dead ends: 385 [2022-02-15 01:29:43,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=405, Invalid=8151, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 01:29:43,569 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 425 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 17710 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:43,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 255 Invalid, 18210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 17710 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-02-15 01:29:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-02-15 01:29:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 202. [2022-02-15 01:29:43,697 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) [2022-02-15 01:29:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2022-02-15 01:29:43,698 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 365 [2022-02-15 01:29:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2022-02-15 01:29:43,698 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) [2022-02-15 01:29:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2022-02-15 01:29:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-02-15 01:29:43,700 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:43,700 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] [2022-02-15 01:29:43,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 01:29:43,700 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1815885816, now seen corresponding path program 45 times [2022-02-15 01:29:43,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:43,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788812344] [2022-02-15 01:29:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:43,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:43,703 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:43,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:43,705 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:29:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:29:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:29:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:29:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-15 01:29:44,727 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:44,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788812344] [2022-02-15 01:29:44,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [788812344] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:44,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:44,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 01:29:44,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993834629] [2022-02-15 01:29:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:44,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 01:29:44,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 01:29:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:29:44,729 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) [2022-02-15 01:29:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:54,066 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2022-02-15 01:29:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 01:29:54,067 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 [2022-02-15 01:29:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:54,068 INFO L225 Difference]: With dead ends: 404 [2022-02-15 01:29:54,068 INFO L226 Difference]: Without dead ends: 393 [2022-02-15 01:29:54,069 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 [2022-02-15 01:29:54,069 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 401 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 20184 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 6.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:54,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 343 Invalid, 20662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 20184 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-02-15 01:29:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-15 01:29:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 206. [2022-02-15 01:29:54,147 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) [2022-02-15 01:29:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 252 transitions. [2022-02-15 01:29:54,148 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 252 transitions. Word has length 373 [2022-02-15 01:29:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:54,148 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 252 transitions. [2022-02-15 01:29:54,149 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) [2022-02-15 01:29:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 252 transitions. [2022-02-15 01:29:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-02-15 01:29:54,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:54,151 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] [2022-02-15 01:29:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 01:29:54,151 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1714454429, now seen corresponding path program 46 times [2022-02-15 01:29:54,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:54,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774457184] [2022-02-15 01:29:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:54,154 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:54,154 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:29:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:54,156 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:29:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:29:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:29:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:29:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:29:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:29:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:29:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:29:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:29:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:29:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:29:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:29:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:29:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:29:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:29:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:29:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:29:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:29:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:29:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:29:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:29:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:29:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:29:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:29:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:29:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:29:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:29:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:29:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:29:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:29:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:29:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:29:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:29:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:29:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:29:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:29:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:29:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:29:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:29:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:29:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:29:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:29:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:29:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:29:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:29:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:29:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:29:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-02-15 01:29:55,391 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:55,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774457184] [2022-02-15 01:29:55,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [774457184] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:55,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:55,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-15 01:29:55,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708577018] [2022-02-15 01:29:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-15 01:29:55,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-15 01:29:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 01:29:55,393 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) [2022-02-15 01:30:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:05,039 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2022-02-15 01:30:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 01:30:05,040 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 [2022-02-15 01:30:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:05,041 INFO L225 Difference]: With dead ends: 412 [2022-02-15 01:30:05,041 INFO L226 Difference]: Without dead ends: 401 [2022-02-15 01:30:05,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=423, Invalid=8889, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 01:30:05,042 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 399 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 21609 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 6.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:05,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 376 Invalid, 22087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 21609 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-02-15 01:30:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-02-15 01:30:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 210. [2022-02-15 01:30:05,123 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) [2022-02-15 01:30:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 257 transitions. [2022-02-15 01:30:05,124 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 257 transitions. Word has length 381 [2022-02-15 01:30:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:05,124 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 257 transitions. [2022-02-15 01:30:05,124 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) [2022-02-15 01:30:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 257 transitions. [2022-02-15 01:30:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-02-15 01:30:05,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:05,126 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] [2022-02-15 01:30:05,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 01:30:05,126 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1224125886, now seen corresponding path program 47 times [2022-02-15 01:30:05,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:05,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501036829] [2022-02-15 01:30:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:05,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:05,128 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:30:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:05,130 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:30:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:30:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:30:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:30:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:30:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:30:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:30:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:30:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:30:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:30:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:30:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:30:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:30:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:30:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:30:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:30:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:30:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:30:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:30:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:30:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:30:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:30:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:30:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:30:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:30:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:30:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:30:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:30:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:30:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:30:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:30:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:30:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:30:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:30:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:30:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:30:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:30:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:30:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:30:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:30:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:30:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:30:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:30:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:30:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:30:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:30:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:30:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:30:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-02-15 01:30:06,385 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:06,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501036829] [2022-02-15 01:30:06,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501036829] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:06,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:06,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 01:30:06,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286196812] [2022-02-15 01:30:06,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:06,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 01:30:06,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:06,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 01:30:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:30:06,386 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) [2022-02-15 01:30:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:15,714 INFO L93 Difference]: Finished difference Result 420 states and 518 transitions. [2022-02-15 01:30:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 01:30:15,714 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 [2022-02-15 01:30:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:15,716 INFO L225 Difference]: With dead ends: 420 [2022-02-15 01:30:15,716 INFO L226 Difference]: Without dead ends: 409 [2022-02-15 01:30:15,721 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 [2022-02-15 01:30:15,721 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 441 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 20764 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s 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, 6.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:15,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 299 Invalid, 21286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 20764 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-15 01:30:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-15 01:30:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 214. [2022-02-15 01:30:15,849 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) [2022-02-15 01:30:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2022-02-15 01:30:15,850 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 389 [2022-02-15 01:30:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:15,851 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2022-02-15 01:30:15,851 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) [2022-02-15 01:30:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2022-02-15 01:30:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-02-15 01:30:15,869 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:15,869 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] [2022-02-15 01:30:15,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 01:30:15,870 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1661710311, now seen corresponding path program 48 times [2022-02-15 01:30:15,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:15,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667036559] [2022-02-15 01:30:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:15,872 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:15,872 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:30:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:15,874 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:30:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:30:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:30:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:30:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:30:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:30:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:30:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:30:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:30:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:30:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:30:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:30:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:30:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:30:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:30:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:30:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:30:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:30:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:30:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:30:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:30:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:30:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:30:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:30:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:30:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:30:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:30:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:30:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:30:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:30:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:30:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:30:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:30:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:30:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:30:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:30:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:30:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:30:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:30:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:30:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:30:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:30:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:30:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:30:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:30:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:30:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:30:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:30:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:30:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-02-15 01:30:17,251 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:17,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667036559] [2022-02-15 01:30:17,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1667036559] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:17,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:17,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 01:30:17,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254730095] [2022-02-15 01:30:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:17,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 01:30:17,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 01:30:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 01:30:17,253 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) [2022-02-15 01:30:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:28,207 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2022-02-15 01:30:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 01:30:28,208 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 [2022-02-15 01:30:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:28,209 INFO L225 Difference]: With dead ends: 428 [2022-02-15 01:30:28,209 INFO L226 Difference]: Without dead ends: 417 [2022-02-15 01:30:28,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=441, Invalid=9659, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 01:30:28,210 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 [2022-02-15 01:30:28,210 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] [2022-02-15 01:30:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-15 01:30:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 218. [2022-02-15 01:30:28,326 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) [2022-02-15 01:30:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2022-02-15 01:30:28,327 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 397 [2022-02-15 01:30:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:28,327 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2022-02-15 01:30:28,328 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) [2022-02-15 01:30:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2022-02-15 01:30:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-02-15 01:30:28,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:28,329 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] [2022-02-15 01:30:28,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 01:30:28,330 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1501337740, now seen corresponding path program 49 times [2022-02-15 01:30:28,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:28,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314020290] [2022-02-15 01:30:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:28,332 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:28,332 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:30:28,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:28,334 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:30:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:30:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:30:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:30:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:30:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:30:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:30:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:30:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:30:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:30:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:30:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:30:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:30:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:30:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:30:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:30:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:30:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:30:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:30:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:30:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:30:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:30:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:30:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:30:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:30:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:30:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:30:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:30:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:30:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:30:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:30:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:30:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:30:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:30:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:30:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:30:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:30:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:30:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:30:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:30:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:30:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:30:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:30:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:30:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:30:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:30:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:30:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:30:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:30:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:30:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-02-15 01:30:29,457 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:29,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314020290] [2022-02-15 01:30:29,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1314020290] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:29,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:29,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 01:30:29,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785718768] [2022-02-15 01:30:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:29,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 01:30:29,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 01:30:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 01:30:29,458 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) [2022-02-15 01:30:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:39,410 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2022-02-15 01:30:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 01:30:39,411 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 [2022-02-15 01:30:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:39,413 INFO L225 Difference]: With dead ends: 436 [2022-02-15 01:30:39,413 INFO L226 Difference]: Without dead ends: 425 [2022-02-15 01:30:39,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=450, Invalid=10056, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 01:30:39,414 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 459 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 22527 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 6.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:39,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 310 Invalid, 23071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 22527 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-02-15 01:30:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-15 01:30:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 222. [2022-02-15 01:30:39,536 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) [2022-02-15 01:30:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 272 transitions. [2022-02-15 01:30:39,537 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 272 transitions. Word has length 405 [2022-02-15 01:30:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:39,537 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 272 transitions. [2022-02-15 01:30:39,538 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) [2022-02-15 01:30:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 272 transitions. [2022-02-15 01:30:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-02-15 01:30:39,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:39,539 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] [2022-02-15 01:30:39,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 01:30:39,539 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1956711473, now seen corresponding path program 50 times [2022-02-15 01:30:39,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:39,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924452386] [2022-02-15 01:30:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:39,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:39,542 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:30:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:39,545 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:30:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:30:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:30:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:30:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:30:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:30:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:30:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:30:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:30:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:30:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:30:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:30:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:30:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:30:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:30:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:30:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:30:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:30:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:30:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:30:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:30:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:30:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:30:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:30:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:30:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:30:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:30:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:30:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:30:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:30:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:30:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:30:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:30:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:30:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:30:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:30:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:30:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:30:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:30:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:30:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:30:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:30:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:30:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:30:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:30:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:30:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:30:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:30:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:30:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:30:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:30:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-15 01:30:40,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:40,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924452386] [2022-02-15 01:30:40,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [924452386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:40,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:40,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 01:30:40,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182128529] [2022-02-15 01:30:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:40,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 01:30:40,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 01:30:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 01:30:40,649 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) [2022-02-15 01:30:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:50,482 INFO L93 Difference]: Finished difference Result 444 states and 548 transitions. [2022-02-15 01:30:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 01:30:50,483 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 [2022-02-15 01:30:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:50,485 INFO L225 Difference]: With dead ends: 444 [2022-02-15 01:30:50,485 INFO L226 Difference]: Without dead ends: 433 [2022-02-15 01:30:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=459, Invalid=10461, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 01:30:50,486 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 509 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 21160 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 6.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:50,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 213 Invalid, 21756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 21160 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-02-15 01:30:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-02-15 01:30:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 226. [2022-02-15 01:30:50,603 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) [2022-02-15 01:30:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2022-02-15 01:30:50,604 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 413 [2022-02-15 01:30:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:50,604 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2022-02-15 01:30:50,605 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) [2022-02-15 01:30:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2022-02-15 01:30:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-02-15 01:30:50,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:50,607 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] [2022-02-15 01:30:50,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 01:30:50,607 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2042497750, now seen corresponding path program 51 times [2022-02-15 01:30:50,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:50,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451958507] [2022-02-15 01:30:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:50,610 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:50,610 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:30:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:50,612 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:30:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:30:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:30:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:30:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:30:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:30:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:30:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:30:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:30:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:30:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:30:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:30:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:30:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:30:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:30:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:30:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:30:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:30:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:30:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:30:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:30:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:30:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:30:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:30:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:30:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:30:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:30:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:30:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:30:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:30:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:30:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:30:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:30:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:30:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:30:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:30:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:30:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:30:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:30:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:30:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:30:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:30:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:30:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:30:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:30:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:30:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:30:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:30:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:30:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:30:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:30:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:30:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-02-15 01:30:52,045 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:52,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451958507] [2022-02-15 01:30:52,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451958507] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:52,045 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:52,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 01:30:52,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136547378] [2022-02-15 01:30:52,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:52,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 01:30:52,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 01:30:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 01:30:52,047 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) [2022-02-15 01:31:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:02,189 INFO L93 Difference]: Finished difference Result 452 states and 558 transitions. [2022-02-15 01:31:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 01:31:02,190 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 [2022-02-15 01:31:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:02,192 INFO L225 Difference]: With dead ends: 452 [2022-02-15 01:31:02,192 INFO L226 Difference]: Without dead ends: 441 [2022-02-15 01:31:02,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=468, Invalid=10874, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 01:31:02,195 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 451 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 25831 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:02,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 386 Invalid, 26371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 25831 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-02-15 01:31:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-15 01:31:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 230. [2022-02-15 01:31:02,406 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) [2022-02-15 01:31:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2022-02-15 01:31:02,409 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 421 [2022-02-15 01:31:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:02,409 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2022-02-15 01:31:02,409 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) [2022-02-15 01:31:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2022-02-15 01:31:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-02-15 01:31:02,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:02,412 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] [2022-02-15 01:31:02,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 01:31:02,412 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:02,412 INFO L85 PathProgramCache]: Analyzing trace with hash -421041275, now seen corresponding path program 52 times [2022-02-15 01:31:02,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:02,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687194037] [2022-02-15 01:31:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:02,421 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:02,422 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:31:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:02,425 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:31:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:31:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:31:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:31:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:31:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:31:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:31:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:31:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:31:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:31:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:31:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:31:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:31:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:31:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:31:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:31:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:31:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:31:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:31:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:31:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:31:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:31:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:31:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:31:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:31:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:31:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:31:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:31:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:31:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:31:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:31:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:31:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:31:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:31:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:31:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:31:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:31:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:31:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:31:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:31:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:31:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:31:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:31:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:31:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:31:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:31:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:31:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:31:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:31:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:31:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:31:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:31:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:31:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-02-15 01:31:03,720 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:03,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687194037] [2022-02-15 01:31:03,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687194037] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:03,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:03,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 01:31:03,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379867798] [2022-02-15 01:31:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:03,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 01:31:03,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 01:31:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 01:31:03,722 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) [2022-02-15 01:31:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:14,731 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2022-02-15 01:31:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 01:31:14,732 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 [2022-02-15 01:31:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:14,734 INFO L225 Difference]: With dead ends: 460 [2022-02-15 01:31:14,734 INFO L226 Difference]: Without dead ends: 449 [2022-02-15 01:31:14,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=477, Invalid=11295, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 01:31:14,735 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 497 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24674 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:14,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 299 Invalid, 25262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 24674 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-02-15 01:31:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-15 01:31:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 234. [2022-02-15 01:31:14,843 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) [2022-02-15 01:31:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2022-02-15 01:31:14,844 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 429 [2022-02-15 01:31:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:14,844 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2022-02-15 01:31:14,845 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) [2022-02-15 01:31:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2022-02-15 01:31:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-02-15 01:31:14,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:14,847 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] [2022-02-15 01:31:14,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 01:31:14,847 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:14,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 302667488, now seen corresponding path program 53 times [2022-02-15 01:31:14,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:14,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460516955] [2022-02-15 01:31:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:14,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:14,849 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:31:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:14,851 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:31:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:31:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:31:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:31:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:31:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:31:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:31:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:31:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:31:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:31:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:31:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:31:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:31:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:31:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:31:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:31:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:31:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:31:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:31:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:31:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:31:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:31:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:31:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:31:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:31:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:31:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:31:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:31:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:31:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:31:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:31:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:31:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:31:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:31:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:31:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:31:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:31:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:31:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:31:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:31:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:31:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:31:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:31:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:31:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:31:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:31:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:31:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:31:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:31:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:31:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:31:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:31:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:31:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:31:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-02-15 01:31:15,969 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:15,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460516955] [2022-02-15 01:31:15,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1460516955] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:15,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:15,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 01:31:15,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275823672] [2022-02-15 01:31:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:15,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 01:31:15,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 01:31:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 01:31:15,971 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) [2022-02-15 01:31:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:27,284 INFO L93 Difference]: Finished difference Result 468 states and 578 transitions. [2022-02-15 01:31:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 01:31:27,284 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 [2022-02-15 01:31:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:27,286 INFO L225 Difference]: With dead ends: 468 [2022-02-15 01:31:27,286 INFO L226 Difference]: Without dead ends: 457 [2022-02-15 01:31:27,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=486, Invalid=11724, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 01:31:27,287 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 549 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23110 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 7.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:27,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 197 Invalid, 23752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 23110 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-02-15 01:31:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-02-15 01:31:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 238. [2022-02-15 01:31:27,412 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) [2022-02-15 01:31:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 292 transitions. [2022-02-15 01:31:27,412 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 292 transitions. Word has length 437 [2022-02-15 01:31:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:27,413 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 292 transitions. [2022-02-15 01:31:27,413 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) [2022-02-15 01:31:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 292 transitions. [2022-02-15 01:31:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-02-15 01:31:27,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:27,415 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] [2022-02-15 01:31:27,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 01:31:27,415 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2124040389, now seen corresponding path program 54 times [2022-02-15 01:31:27,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:27,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542077897] [2022-02-15 01:31:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:27,418 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:27,418 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:31:27,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:27,421 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:31:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:31:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:31:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:31:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:31:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:31:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:31:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:31:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:31:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:31:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:31:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:31:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:31:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:31:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:31:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:31:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:31:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:31:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:31:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:31:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:31:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:31:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:31:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:31:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:31:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:31:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:31:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:31:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:31:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:31:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:31:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:31:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:31:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:31:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:31:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:31:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:31:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:31:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:31:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:31:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:31:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:31:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:31:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:31:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:31:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:31:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:31:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:31:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:31:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:31:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:31:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:31:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:31:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:31:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:31:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-02-15 01:31:28,921 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:28,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542077897] [2022-02-15 01:31:28,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1542077897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:28,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:28,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 01:31:28,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495093858] [2022-02-15 01:31:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:28,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 01:31:28,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 01:31:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 01:31:28,923 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) [2022-02-15 01:31:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:42,040 INFO L93 Difference]: Finished difference Result 476 states and 588 transitions. [2022-02-15 01:31:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 01:31:42,041 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 [2022-02-15 01:31:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:42,043 INFO L225 Difference]: With dead ends: 476 [2022-02-15 01:31:42,043 INFO L226 Difference]: Without dead ends: 465 [2022-02-15 01:31:42,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=495, Invalid=12161, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 01:31:42,044 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 465 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 29570 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 8.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:42,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 435 Invalid, 30130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 29570 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-02-15 01:31:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-02-15 01:31:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 242. [2022-02-15 01:31:42,168 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) [2022-02-15 01:31:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 297 transitions. [2022-02-15 01:31:42,169 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 297 transitions. Word has length 445 [2022-02-15 01:31:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:42,169 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 297 transitions. [2022-02-15 01:31:42,169 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) [2022-02-15 01:31:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 297 transitions. [2022-02-15 01:31:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-02-15 01:31:42,171 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:42,171 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] [2022-02-15 01:31:42,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 01:31:42,172 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1011577706, now seen corresponding path program 55 times [2022-02-15 01:31:42,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:42,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114673222] [2022-02-15 01:31:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:42,174 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:42,174 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:31:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:42,176 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:31:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:31:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:31:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:31:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:31:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:31:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:31:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:31:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:31:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:31:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:31:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:31:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:31:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:31:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:31:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:31:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:31:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:31:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:31:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:31:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:31:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:31:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:31:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:31:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:31:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:31:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:31:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:31:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:31:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:31:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:31:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:31:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:31:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:31:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:31:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:31:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:31:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:31:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:31:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:31:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:31:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:31:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:31:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:31:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:31:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:31:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:31:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:31:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:31:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:31:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:31:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:31:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:31:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:31:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:31:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:31:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-15 01:31:43,390 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:43,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114673222] [2022-02-15 01:31:43,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1114673222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:43,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:43,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 01:31:43,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176822774] [2022-02-15 01:31:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:43,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 01:31:43,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 01:31:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 01:31:43,393 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) [2022-02-15 01:31:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:57,461 INFO L93 Difference]: Finished difference Result 484 states and 598 transitions. [2022-02-15 01:31:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 01:31:57,461 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 [2022-02-15 01:31:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:57,463 INFO L225 Difference]: With dead ends: 484 [2022-02-15 01:31:57,463 INFO L226 Difference]: Without dead ends: 473 [2022-02-15 01:31:57,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=504, Invalid=12606, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 01:31:57,465 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 473 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 30668 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 31238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 30668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:57,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 443 Invalid, 31238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 30668 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-02-15 01:31:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-02-15 01:31:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 246. [2022-02-15 01:31:57,601 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) [2022-02-15 01:31:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2022-02-15 01:31:57,602 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 453 [2022-02-15 01:31:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:57,602 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2022-02-15 01:31:57,602 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) [2022-02-15 01:31:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2022-02-15 01:31:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-02-15 01:31:57,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:57,605 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] [2022-02-15 01:31:57,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 01:31:57,605 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2092029681, now seen corresponding path program 56 times [2022-02-15 01:31:57,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:57,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23316337] [2022-02-15 01:31:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:57,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:57,607 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:31:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:57,610 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:31:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:31:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:31:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:31:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:31:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:31:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:31:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:31:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:31:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:31:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:31:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:31:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:31:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:31:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:31:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:31:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:31:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:31:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:31:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:31:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:31:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:31:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:31:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:31:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:31:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:31:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:31:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:31:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:31:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:31:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:31:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:31:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:31:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:31:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:31:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:31:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:31:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:31:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:31:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:31:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:31:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:31:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:31:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:31:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:31:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:31:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:31:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:31:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:31:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:31:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:31:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:31:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:31:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:31:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:31:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:31:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:31:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-02-15 01:31:58,946 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:58,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23316337] [2022-02-15 01:31:58,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [23316337] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:58,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:58,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 01:31:58,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159652108] [2022-02-15 01:31:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:58,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 01:31:58,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 01:31:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 01:31:58,948 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) [2022-02-15 01:32:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:32:11,439 INFO L93 Difference]: Finished difference Result 492 states and 608 transitions. [2022-02-15 01:32:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 01:32:11,440 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 [2022-02-15 01:32:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:32:11,442 INFO L225 Difference]: With dead ends: 492 [2022-02-15 01:32:11,442 INFO L226 Difference]: Without dead ends: 481 [2022-02-15 01:32:11,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 01:32:11,443 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 569 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 26374 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 7.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:32:11,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 231 Invalid, 27042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 26374 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-02-15 01:32:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-02-15 01:32:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 250. [2022-02-15 01:32:11,626 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) [2022-02-15 01:32:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 307 transitions. [2022-02-15 01:32:11,627 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 307 transitions. Word has length 461 [2022-02-15 01:32:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:32:11,628 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 307 transitions. [2022-02-15 01:32:11,628 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) [2022-02-15 01:32:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 307 transitions. [2022-02-15 01:32:11,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-02-15 01:32:11,630 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:32:11,630 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] [2022-02-15 01:32:11,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 01:32:11,631 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:32:11,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:32:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1696110156, now seen corresponding path program 57 times [2022-02-15 01:32:11,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:32:11,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146395971] [2022-02-15 01:32:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:32:11,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:11,634 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:32:11,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:32:11,637 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:32:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:32:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:32:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:32:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:32:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:32:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:32:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:32:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:32:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:32:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:32:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:32:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:32:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:32:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:32:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:32:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:32:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:32:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:32:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:32:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:32:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:32:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:32:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:32:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:32:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:32:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:32:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:32:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:32:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:32:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:32:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:32:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:32:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:32:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:32:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:32:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:32:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:32:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:32:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:32:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:32:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:32:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:32:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:32:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:32:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:32:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:32:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:32:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:32:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:32:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:32:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:32:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:32:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:32:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:32:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:32:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:32:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:32:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:32:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-02-15 01:32:13,072 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:13,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146395971] [2022-02-15 01:32:13,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146395971] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:13,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:13,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 01:32:13,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966414538] [2022-02-15 01:32:13,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:13,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 01:32:13,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 01:32:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 01:32:13,074 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) [2022-02-15 01:32:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:32:27,575 INFO L93 Difference]: Finished difference Result 500 states and 618 transitions. [2022-02-15 01:32:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 01:32:27,576 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 [2022-02-15 01:32:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:32:27,578 INFO L225 Difference]: With dead ends: 500 [2022-02-15 01:32:27,578 INFO L226 Difference]: Without dead ends: 489 [2022-02-15 01:32:27,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=522, Invalid=13520, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 01:32:27,591 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 585 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26924 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s 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, 9.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:32:27,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 219 Invalid, 27610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 26924 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-02-15 01:32:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-15 01:32:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 254. [2022-02-15 01:32:27,753 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) [2022-02-15 01:32:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 312 transitions. [2022-02-15 01:32:27,753 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 312 transitions. Word has length 469 [2022-02-15 01:32:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:32:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 312 transitions. [2022-02-15 01:32:27,754 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) [2022-02-15 01:32:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 312 transitions. [2022-02-15 01:32:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-02-15 01:32:27,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:32:27,756 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] [2022-02-15 01:32:27,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 01:32:27,756 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:32:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:32:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1252248231, now seen corresponding path program 58 times [2022-02-15 01:32:27,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:32:27,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134036389] [2022-02-15 01:32:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:32:27,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:27,759 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:32:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:32:27,761 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:32:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:32:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:32:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:32:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:32:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:32:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:32:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:32:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:32:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:32:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:32:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:32:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:32:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:32:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:32:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:32:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:32:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:32:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:32:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:32:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:32:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:32:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:32:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:32:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:32:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:32:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:32:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:32:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:32:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:32:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:32:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:32:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:32:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:32:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:32:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:32:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:32:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:32:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:32:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:32:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:32:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:32:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:32:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:32:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:32:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:32:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:32:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:32:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:32:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:32:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:32:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:32:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:32:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:32:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:32:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:32:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:32:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:32:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:32:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:32:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-02-15 01:32:29,650 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:29,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134036389] [2022-02-15 01:32:29,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1134036389] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:29,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:29,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 01:32:29,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635930192] [2022-02-15 01:32:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:29,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 01:32:29,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 01:32:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 01:32:29,652 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) [2022-02-15 01:32:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:32:44,755 INFO L93 Difference]: Finished difference Result 508 states and 628 transitions. [2022-02-15 01:32:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 01:32:44,756 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 [2022-02-15 01:32:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:32:44,769 INFO L225 Difference]: With dead ends: 508 [2022-02-15 01:32:44,769 INFO L226 Difference]: Without dead ends: 497 [2022-02-15 01:32:44,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=531, Invalid=13989, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 01:32:44,771 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 521 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 32558 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s 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, 9.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:32:44,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 407 Invalid, 33182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 32558 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-02-15 01:32:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-02-15 01:32:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 258. [2022-02-15 01:32:44,925 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) [2022-02-15 01:32:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2022-02-15 01:32:44,926 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 477 [2022-02-15 01:32:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:32:44,926 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2022-02-15 01:32:44,927 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) [2022-02-15 01:32:44,927 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2022-02-15 01:32:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-02-15 01:32:44,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:32:44,929 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] [2022-02-15 01:32:44,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 01:32:44,929 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:32:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:32:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 269382658, now seen corresponding path program 59 times [2022-02-15 01:32:44,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:32:44,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830806299] [2022-02-15 01:32:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:32:44,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:44,932 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:32:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:32:44,934 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:32:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:32:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:32:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:32:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:32:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:32:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:32:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:32:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:32:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:32:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:32:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:32:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:32:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:32:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:32:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:32:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:32:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:32:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:32:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:32:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:32:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:32:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:32:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:32:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:32:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:32:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:32:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:32:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:32:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:32:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:32:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:32:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:32:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:32:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:32:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:32:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:32:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:32:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:32:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:32:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:32:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:32:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:32:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:32:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:32:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:32:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:32:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:32:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:32:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:32:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:32:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:32:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:32:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:32:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:32:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:32:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:32:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:32:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:32:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:32:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:32:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-02-15 01:32:46,543 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:46,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830806299] [2022-02-15 01:32:46,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [830806299] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:46,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:46,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 01:32:46,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236121759] [2022-02-15 01:32:46,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:46,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 01:32:46,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:46,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 01:32:46,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 01:32:46,545 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) [2022-02-15 01:33:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:01,526 INFO L93 Difference]: Finished difference Result 516 states and 638 transitions. [2022-02-15 01:33:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 01:33:01,527 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 [2022-02-15 01:33:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:01,529 INFO L225 Difference]: With dead ends: 516 [2022-02-15 01:33:01,529 INFO L226 Difference]: Without dead ends: 505 [2022-02-15 01:33:01,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=540, Invalid=14466, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 01:33:01,531 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 549 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 32422 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s 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, 9.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:01,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 365 Invalid, 33076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 32422 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-02-15 01:33:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-02-15 01:33:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 262. [2022-02-15 01:33:01,743 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) [2022-02-15 01:33:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2022-02-15 01:33:01,744 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 485 [2022-02-15 01:33:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:01,745 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2022-02-15 01:33:01,745 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) [2022-02-15 01:33:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2022-02-15 01:33:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-02-15 01:33:01,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:01,748 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] [2022-02-15 01:33:01,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 01:33:01,748 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1391226275, now seen corresponding path program 60 times [2022-02-15 01:33:01,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:01,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220365196] [2022-02-15 01:33:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:01,759 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:01,759 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:33:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:01,763 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:33:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:33:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:33:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:33:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:33:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:33:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:33:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:33:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:33:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:33:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:33:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:33:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:33:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:33:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:33:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:33:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:33:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:33:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:33:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:33:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:33:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:33:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:33:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:33:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:33:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:33:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:33:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:33:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:33:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:33:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:33:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:33:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:33:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:33:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:33:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:33:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:33:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:33:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:33:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:33:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:33:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:33:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:33:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:33:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:33:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:33:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:33:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:33:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:33:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:33:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:33:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:33:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:33:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:33:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:33:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:33:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:33:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:33:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:33:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:33:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:33:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-15 01:33:03,522 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:03,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220365196] [2022-02-15 01:33:03,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [220365196] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:03,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:03,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-15 01:33:03,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575975844] [2022-02-15 01:33:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:03,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 01:33:03,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 01:33:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 01:33:03,525 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) [2022-02-15 01:33:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:17,928 INFO L93 Difference]: Finished difference Result 524 states and 648 transitions. [2022-02-15 01:33:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 01:33:17,928 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 [2022-02-15 01:33:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:17,930 INFO L225 Difference]: With dead ends: 524 [2022-02-15 01:33:17,930 INFO L226 Difference]: Without dead ends: 513 [2022-02-15 01:33:17,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=549, Invalid=14951, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 01:33:17,931 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 615 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29777 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s 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, 8.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:17,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 228 Invalid, 30499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 29777 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-02-15 01:33:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-02-15 01:33:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 266. [2022-02-15 01:33:18,068 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) [2022-02-15 01:33:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions. [2022-02-15 01:33:18,069 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 493 [2022-02-15 01:33:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:18,069 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 327 transitions. [2022-02-15 01:33:18,069 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) [2022-02-15 01:33:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions. [2022-02-15 01:33:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-02-15 01:33:18,079 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:18,079 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] [2022-02-15 01:33:18,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 01:33:18,079 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 778970552, now seen corresponding path program 61 times [2022-02-15 01:33:18,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:18,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684672487] [2022-02-15 01:33:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:18,082 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:18,082 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:33:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:18,085 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:33:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:33:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:33:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:33:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:33:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:33:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:33:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:33:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:33:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:33:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:33:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:33:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:33:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:33:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:33:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:33:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:33:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:33:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:33:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:33:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:33:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:33:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:33:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:33:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:33:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:33:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:33:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:33:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:33:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:33:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:33:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:33:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:33:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:33:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:33:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:33:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:33:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:33:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:33:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:33:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:33:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:33:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:33:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:33:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:33:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:33:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:33:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:33:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:33:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:33:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:33:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:33:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:33:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:33:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:33:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:33:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:33:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:33:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:33:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:33:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:33:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:33:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-02-15 01:33:19,919 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:19,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684672487] [2022-02-15 01:33:19,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [684672487] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:19,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:19,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-15 01:33:19,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212377168] [2022-02-15 01:33:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:19,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 01:33:19,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 01:33:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 01:33:19,921 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) [2022-02-15 01:33:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:35,727 INFO L93 Difference]: Finished difference Result 532 states and 658 transitions. [2022-02-15 01:33:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 01:33:35,727 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 [2022-02-15 01:33:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:35,730 INFO L225 Difference]: With dead ends: 532 [2022-02-15 01:33:35,730 INFO L226 Difference]: Without dead ends: 521 [2022-02-15 01:33:35,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=558, Invalid=15444, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 01:33:35,731 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 581 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 33686 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s 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, 9.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:35,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 341 Invalid, 34376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 33686 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-02-15 01:33:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-02-15 01:33:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 270. [2022-02-15 01:33:35,914 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) [2022-02-15 01:33:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2022-02-15 01:33:35,915 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 501 [2022-02-15 01:33:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2022-02-15 01:33:35,915 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) [2022-02-15 01:33:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2022-02-15 01:33:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-02-15 01:33:35,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:35,918 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] [2022-02-15 01:33:35,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 01:33:35,918 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1244058093, now seen corresponding path program 62 times [2022-02-15 01:33:35,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:35,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90329868] [2022-02-15 01:33:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:35,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:35,921 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:33:35,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:35,925 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:33:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:33:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:33:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:33:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:33:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:33:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:33:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:33:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:33:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:33:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:33:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:33:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:33:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:33:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:33:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:33:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:33:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:33:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:33:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:33:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:33:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:33:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:33:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:33:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:33:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:33:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:33:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:33:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:33:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:33:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:33:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:33:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:33:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:33:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:33:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:33:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:33:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:33:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:33:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:33:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:33:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:33:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:33:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:33:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:33:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:33:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:33:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:33:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:33:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:33:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:33:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:33:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:33:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:33:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:33:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:33:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:33:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:33:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:33:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:33:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:33:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:33:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:33:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-02-15 01:33:37,618 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:37,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90329868] [2022-02-15 01:33:37,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [90329868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:37,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:37,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-15 01:33:37,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69292993] [2022-02-15 01:33:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:37,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-15 01:33:37,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-15 01:33:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 01:33:37,621 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) [2022-02-15 01:33:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:53,787 INFO L93 Difference]: Finished difference Result 540 states and 668 transitions. [2022-02-15 01:33:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 01:33:53,788 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 [2022-02-15 01:33:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:53,790 INFO L225 Difference]: With dead ends: 540 [2022-02-15 01:33:53,790 INFO L226 Difference]: Without dead ends: 529 [2022-02-15 01:33:53,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=567, Invalid=15945, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 01:33:53,792 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 607 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33649 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 34367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 33649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:53,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 304 Invalid, 34367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 33649 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-02-15 01:33:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-02-15 01:33:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 274. [2022-02-15 01:33:54,181 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) [2022-02-15 01:33:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 337 transitions. [2022-02-15 01:33:54,182 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 337 transitions. Word has length 509 [2022-02-15 01:33:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:54,182 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 337 transitions. [2022-02-15 01:33:54,182 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) [2022-02-15 01:33:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 337 transitions. [2022-02-15 01:33:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-02-15 01:33:54,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:54,186 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] [2022-02-15 01:33:54,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 01:33:54,186 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2047847278, now seen corresponding path program 63 times [2022-02-15 01:33:54,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:54,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088257755] [2022-02-15 01:33:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:54,189 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:54,189 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:33:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:54,193 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:33:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:33:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:33:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:33:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:33:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:33:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:33:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:33:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:33:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:33:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:33:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:33:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:33:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:33:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:33:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:33:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:33:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:33:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:33:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:33:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:33:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:33:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:33:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:33:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:33:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:33:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:33:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:33:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:33:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:33:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:33:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:33:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:33:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:33:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:33:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:33:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:33:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:33:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:33:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:33:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:33:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:33:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:33:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:33:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:33:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:33:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:33:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:33:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:33:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:33:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:33:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:33:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:33:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:33:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:33:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:33:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:33:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:33:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:33:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:33:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:33:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:33:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:33:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:33:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-02-15 01:33:56,795 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:56,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088257755] [2022-02-15 01:33:56,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2088257755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:56,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:56,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-15 01:33:56,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67332136] [2022-02-15 01:33:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:56,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-15 01:33:56,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-15 01:33:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 01:33:56,797 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) [2022-02-15 01:34:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:34:14,075 INFO L93 Difference]: Finished difference Result 548 states and 678 transitions. [2022-02-15 01:34:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 01:34:14,077 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 [2022-02-15 01:34:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:34:14,079 INFO L225 Difference]: With dead ends: 548 [2022-02-15 01:34:14,079 INFO L226 Difference]: Without dead ends: 537 [2022-02-15 01:34:14,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2017 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=576, Invalid=16454, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 01:34:14,081 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 585 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 36884 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s 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, 10.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:34:14,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 387 Invalid, 37582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [698 Valid, 36884 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-02-15 01:34:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-02-15 01:34:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 278. [2022-02-15 01:34:14,281 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) [2022-02-15 01:34:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2022-02-15 01:34:14,282 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 517 [2022-02-15 01:34:14,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:34:14,283 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2022-02-15 01:34:14,283 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) [2022-02-15 01:34:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2022-02-15 01:34:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-02-15 01:34:14,285 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:34:14,285 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] [2022-02-15 01:34:14,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 01:34:14,286 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:34:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:34:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -959668791, now seen corresponding path program 64 times [2022-02-15 01:34:14,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:34:14,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496856614] [2022-02-15 01:34:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:34:14,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:14,290 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:34:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:34:14,297 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:34:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:34:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:34:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:34:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:34:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:34:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:34:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:34:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:34:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:34:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:34:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:34:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:34:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:34:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:34:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:34:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:34:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:34:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:34:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:34:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:34:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:34:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:34:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:34:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:34:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:34:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:34:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:34:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:34:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:34:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:34:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:34:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:34:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:34:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:34:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:34:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:34:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:34:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:34:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:34:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:34:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:34:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:34:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:34:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:34:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:34:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:34:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:34:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:34:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:34:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:34:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:34:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:34:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:34:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:34:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:34:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:34:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:34:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:34:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:34:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:34:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:34:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:34:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:34:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:34:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:34:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-02-15 01:34:16,514 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:34:16,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496856614] [2022-02-15 01:34:16,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1496856614] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:34:16,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:34:16,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-15 01:34:16,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806532342] [2022-02-15 01:34:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:34:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-15 01:34:16,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:34:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-15 01:34:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 01:34:16,516 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) [2022-02-15 01:34:33,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:34:33,410 INFO L93 Difference]: Finished difference Result 556 states and 688 transitions. [2022-02-15 01:34:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 01:34:33,410 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 [2022-02-15 01:34:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:34:33,413 INFO L225 Difference]: With dead ends: 556 [2022-02-15 01:34:33,413 INFO L226 Difference]: Without dead ends: 545 [2022-02-15 01:34:33,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=585, Invalid=16971, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 01:34:33,417 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 655 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 33805 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 34575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 33805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:34:33,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 240 Invalid, 34575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 33805 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-02-15 01:34:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-02-15 01:34:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 282. [2022-02-15 01:34:33,632 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) [2022-02-15 01:34:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 347 transitions. [2022-02-15 01:34:33,634 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 347 transitions. Word has length 525 [2022-02-15 01:34:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:34:33,634 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 347 transitions. [2022-02-15 01:34:33,634 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) [2022-02-15 01:34:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 347 transitions. [2022-02-15 01:34:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-02-15 01:34:33,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:34:33,637 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] [2022-02-15 01:34:33,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 01:34:33,637 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:34:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:34:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash -53803740, now seen corresponding path program 65 times [2022-02-15 01:34:33,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:34:33,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353408234] [2022-02-15 01:34:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:34:33,640 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:33,640 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:34:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:34:33,642 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:34:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:34:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:34:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:34:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:34:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:34:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:34:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:34:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:34:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:34:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:34:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:34:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:34:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:34:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:34:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:34:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:34:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:34:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:34:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:34:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:34:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:34:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:34:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:34:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:34:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:34:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:34:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:34:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:34:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:34:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:34:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:34:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:34:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:34:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:34:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:34:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:34:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:34:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:34:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:34:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:34:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:34:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:34:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:34:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:34:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:34:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:34:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:34:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:34:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:34:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:34:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:34:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:34:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:34:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:34:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:34:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:34:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:34:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:34:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:34:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:34:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:34:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:34:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:34:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:34:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:34:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:34:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-15 01:34:35,936 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:34:35,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353408234] [2022-02-15 01:34:35,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1353408234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:34:35,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:34:35,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-15 01:34:35,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666380618] [2022-02-15 01:34:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:34:35,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-15 01:34:35,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:34:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-15 01:34:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 01:34:35,938 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) [2022-02-15 01:34:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:34:56,027 INFO L93 Difference]: Finished difference Result 564 states and 698 transitions. [2022-02-15 01:34:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 01:34:56,027 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 [2022-02-15 01:34:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:34:56,029 INFO L225 Difference]: With dead ends: 564 [2022-02-15 01:34:56,029 INFO L226 Difference]: Without dead ends: 553 [2022-02-15 01:34:56,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=594, Invalid=17496, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 01:34:56,030 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 571 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 41479 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s 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, 12.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:34:56,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 478 Invalid, 42167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [688 Valid, 41479 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-02-15 01:34:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-02-15 01:34:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 286. [2022-02-15 01:34:56,211 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) [2022-02-15 01:34:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 352 transitions. [2022-02-15 01:34:56,212 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 352 transitions. Word has length 533 [2022-02-15 01:34:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:34:56,212 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 352 transitions. [2022-02-15 01:34:56,212 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) [2022-02-15 01:34:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 352 transitions. [2022-02-15 01:34:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-02-15 01:34:56,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:34:56,215 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] [2022-02-15 01:34:56,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 01:34:56,215 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:34:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:34:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1849302657, now seen corresponding path program 66 times [2022-02-15 01:34:56,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:34:56,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963968702] [2022-02-15 01:34:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:34:56,217 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:56,217 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:34:56,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:34:56,233 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:34:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:34:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:34:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:34:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:34:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:34:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:34:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:34:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:34:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:34:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:34:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:34:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:34:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:34:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:34:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:34:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:34:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:34:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:34:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:34:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:34:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:34:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:34:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:34:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:34:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:34:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:34:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:34:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:34:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:34:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:34:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:34:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:34:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:34:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:34:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:34:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:34:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:34:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:34:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:34:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:34:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:34:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:34:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:34:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:34:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:34:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:34:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:34:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:34:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:34:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:34:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:34:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:34:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:34:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:34:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:34:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:34:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:34:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:34:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:34:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:34:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:34:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:34:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:34:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:34:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:34:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:34:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:34:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-02-15 01:34:58,122 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:34:58,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963968702] [2022-02-15 01:34:58,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963968702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:34:58,122 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:34:58,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-15 01:34:58,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842689694] [2022-02-15 01:34:58,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:34:58,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-15 01:34:58,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:34:58,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-15 01:34:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 01:34:58,126 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) [2022-02-15 01:35:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:35:17,698 INFO L93 Difference]: Finished difference Result 572 states and 708 transitions. [2022-02-15 01:35:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 01:35:17,698 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 [2022-02-15 01:35:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:35:17,701 INFO L225 Difference]: With dead ends: 572 [2022-02-15 01:35:17,701 INFO L226 Difference]: Without dead ends: 561 [2022-02-15 01:35:17,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=603, Invalid=18029, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 01:35:17,702 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 603 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 41063 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s 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, 11.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:35:17,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 426 Invalid, 41785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [722 Valid, 41063 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-02-15 01:35:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-02-15 01:35:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 290. [2022-02-15 01:35:17,943 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) [2022-02-15 01:35:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2022-02-15 01:35:17,944 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 541 [2022-02-15 01:35:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:35:17,944 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2022-02-15 01:35:17,945 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) [2022-02-15 01:35:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2022-02-15 01:35:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-02-15 01:35:17,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:35:17,947 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] [2022-02-15 01:35:17,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 01:35:17,948 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:35:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:35:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 276312794, now seen corresponding path program 67 times [2022-02-15 01:35:17,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:35:17,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379415266] [2022-02-15 01:35:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:35:17,950 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:17,950 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:35:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:35:17,953 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:35:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:35:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:35:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:35:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:35:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:35:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:35:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:35:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:35:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:35:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:35:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:35:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:35:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:35:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:35:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:35:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:35:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:35:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:35:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:35:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:35:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:35:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:35:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:35:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:35:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:35:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:35:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:35:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:35:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:35:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:35:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:35:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:35:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:35:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:35:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:35:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:35:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:35:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:35:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:35:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:35:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:35:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:35:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:35:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:35:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:35:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:35:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:35:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:35:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:35:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:35:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:35:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:35:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:35:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:35:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:35:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:35:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:35:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:35:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:35:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:35:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:35:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:35:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:35:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:35:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:35:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:35:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:35:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:35:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-02-15 01:35:20,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:35:20,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379415266] [2022-02-15 01:35:20,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [379415266] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:35:20,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:35:20,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-15 01:35:20,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938103119] [2022-02-15 01:35:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:35:20,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 01:35:20,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:35:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 01:35:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 01:35:20,052 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) [2022-02-15 01:35:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:35:40,987 INFO L93 Difference]: Finished difference Result 580 states and 718 transitions. [2022-02-15 01:35:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-15 01:35:40,987 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 [2022-02-15 01:35:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:35:40,990 INFO L225 Difference]: With dead ends: 580 [2022-02-15 01:35:40,990 INFO L226 Difference]: Without dead ends: 569 [2022-02-15 01:35:40,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=612, Invalid=18570, Unknown=0, NotChecked=0, Total=19182 [2022-02-15 01:35:40,992 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 561 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 45984 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s 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, 12.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:35:40,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 559 Invalid, 46666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [682 Valid, 45984 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-02-15 01:35:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-02-15 01:35:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2022-02-15 01:35:41,242 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) [2022-02-15 01:35:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-02-15 01:35:41,243 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 549 [2022-02-15 01:35:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:35:41,243 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-02-15 01:35:41,244 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) [2022-02-15 01:35:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-02-15 01:35:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-02-15 01:35:41,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:35:41,247 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] [2022-02-15 01:35:41,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 01:35:41,248 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:35:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:35:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 412940597, now seen corresponding path program 68 times [2022-02-15 01:35:41,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:35:41,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274775210] [2022-02-15 01:35:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:35:41,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:41,253 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:35:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:35:41,256 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:35:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:35:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:35:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:35:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:35:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:35:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:35:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:35:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:35:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:35:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:35:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:35:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:35:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:35:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:35:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:35:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:35:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:35:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:35:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:35:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:35:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:35:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:35:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:35:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:35:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:35:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:35:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:35:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:35:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:35:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:35:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:35:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:35:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:35:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:35:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:35:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:35:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:35:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:35:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:35:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:35:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:35:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:35:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:35:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:35:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:35:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:35:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:35:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:35:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:35:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:35:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:35:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:35:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:35:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:35:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:35:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:35:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:35:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:35:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:35:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:35:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:35:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:35:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:35:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:35:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:35:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:35:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:35:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:35:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:35:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-02-15 01:35:43,129 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:35:43,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274775210] [2022-02-15 01:35:43,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [274775210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:35:43,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:35:43,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-15 01:35:43,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811524090] [2022-02-15 01:35:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:35:43,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-15 01:35:43,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:35:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-15 01:35:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 01:35:43,142 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) [2022-02-15 01:36:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:36:06,020 INFO L93 Difference]: Finished difference Result 588 states and 728 transitions. [2022-02-15 01:36:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 01:36:06,021 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 [2022-02-15 01:36:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:36:06,023 INFO L225 Difference]: With dead ends: 588 [2022-02-15 01:36:06,023 INFO L226 Difference]: Without dead ends: 577 [2022-02-15 01:36:06,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=621, Invalid=19119, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 01:36:06,025 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 625 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 43234 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s 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, 13.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:36:06,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 427 Invalid, 43982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [748 Valid, 43234 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-02-15 01:36:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-02-15 01:36:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 298. [2022-02-15 01:36:06,223 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) [2022-02-15 01:36:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2022-02-15 01:36:06,223 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 557 [2022-02-15 01:36:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:36:06,224 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2022-02-15 01:36:06,224 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) [2022-02-15 01:36:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2022-02-15 01:36:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-02-15 01:36:06,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:36:06,227 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] [2022-02-15 01:36:06,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 01:36:06,227 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:36:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:36:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1592734864, now seen corresponding path program 69 times [2022-02-15 01:36:06,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:36:06,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232770613] [2022-02-15 01:36:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:36:06,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:36:06,234 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:36:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:36:06,237 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:36:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:36:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:36:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:36:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:36:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:36:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:36:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:36:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:36:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:36:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:36:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:36:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:36:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:36:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:36:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:36:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:36:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:36:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:36:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:36:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:36:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:36:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:36:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:36:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:36:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:36:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:36:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:36:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:36:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:36:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:36:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:36:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:36:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:36:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:36:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:36:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:36:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:36:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:36:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:36:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:36:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:36:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:36:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:36:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:36:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:36:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:36:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:36:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:36:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:36:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:36:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:36:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:36:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:36:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:36:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:36:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:36:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:36:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:36:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:36:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:36:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:36:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:36:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:36:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:36:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:36:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:36:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:36:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:36:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:36:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:36:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-02-15 01:36:08,498 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:36:08,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232770613] [2022-02-15 01:36:08,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1232770613] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:36:08,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:36:08,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-15 01:36:08,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642044267] [2022-02-15 01:36:08,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:36:08,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-15 01:36:08,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:36:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-15 01:36:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 01:36:08,500 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) [2022-02-15 01:36:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:36:28,917 INFO L93 Difference]: Finished difference Result 596 states and 738 transitions. [2022-02-15 01:36:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 01:36:28,918 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 [2022-02-15 01:36:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:36:28,920 INFO L225 Difference]: With dead ends: 596 [2022-02-15 01:36:28,920 INFO L226 Difference]: Without dead ends: 585 [2022-02-15 01:36:28,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=630, Invalid=19676, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 01:36:28,921 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 695 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39945 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s 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, 11.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:36:28,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 280 Invalid, 40765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [820 Valid, 39945 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-02-15 01:36:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-02-15 01:36:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 302. [2022-02-15 01:36:29,168 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) [2022-02-15 01:36:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 372 transitions. [2022-02-15 01:36:29,169 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 372 transitions. Word has length 565 [2022-02-15 01:36:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:36:29,169 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 372 transitions. [2022-02-15 01:36:29,169 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) [2022-02-15 01:36:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 372 transitions. [2022-02-15 01:36:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-02-15 01:36:29,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:36:29,173 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] [2022-02-15 01:36:29,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 01:36:29,173 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:36:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:36:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1389763349, now seen corresponding path program 70 times [2022-02-15 01:36:29,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:36:29,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698911378] [2022-02-15 01:36:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:36:29,177 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:36:29,177 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:36:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:36:29,181 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:36:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:36:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:36:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:36:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:36:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:36:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:36:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:36:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:36:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:36:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:36:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:36:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:36:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:36:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:36:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:36:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:36:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:36:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:36:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:36:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:36:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:36:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:36:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:36:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:36:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:36:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:36:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:36:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:36:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:36:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:36:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:36:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:36:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:36:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:36:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:36:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:36:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:36:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:36:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:36:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:36:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:36:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:36:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:36:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:36:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:36:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:36:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:36:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:36:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:36:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:36:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:36:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:36:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:36:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:36:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:36:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:36:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:36:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:36:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:36:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:36:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:36:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:36:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:36:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:36:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:36:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:36:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:36:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:36:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:36:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:36:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:36:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-15 01:36:31,563 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:36:31,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698911378] [2022-02-15 01:36:31,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [698911378] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:36:31,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:36:31,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-15 01:36:31,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246512790] [2022-02-15 01:36:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:36:31,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-15 01:36:31,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:36:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-15 01:36:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 01:36:31,565 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) [2022-02-15 01:36:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:36:53,682 INFO L93 Difference]: Finished difference Result 604 states and 748 transitions. [2022-02-15 01:36:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 01:36:53,683 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 [2022-02-15 01:36:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:36:53,685 INFO L225 Difference]: With dead ends: 604 [2022-02-15 01:36:53,685 INFO L226 Difference]: Without dead ends: 593 [2022-02-15 01:36:53,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=639, Invalid=20241, Unknown=0, NotChecked=0, Total=20880 [2022-02-15 01:36:53,686 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 637 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 46216 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s 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, 12.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:36:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 453 Invalid, 46980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [764 Valid, 46216 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-02-15 01:36:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-02-15 01:36:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 306. [2022-02-15 01:36:53,913 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) [2022-02-15 01:36:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 377 transitions. [2022-02-15 01:36:53,914 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 377 transitions. Word has length 573 [2022-02-15 01:36:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:36:53,914 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 377 transitions. [2022-02-15 01:36:53,914 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) [2022-02-15 01:36:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 377 transitions. [2022-02-15 01:36:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-02-15 01:36:53,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:36:53,918 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] [2022-02-15 01:36:53,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 01:36:53,918 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:36:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:36:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash -502789562, now seen corresponding path program 71 times [2022-02-15 01:36:53,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:36:53,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628951630] [2022-02-15 01:36:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:36:53,929 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:36:53,929 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:36:53,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:36:53,933 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:36:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:36:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:36:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:36:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:36:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:36:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:36:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:36:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:36:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:36:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:36:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:36:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:36:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:36:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:36:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:36:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:36:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:36:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:36:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:36:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:36:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:36:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:36:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:36:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:36:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:36:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:36:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:36:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:36:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:36:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:36:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:36:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:36:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:36:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:36:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:36:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:36:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:36:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:36:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:36:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:36:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:36:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:36:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:36:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:36:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:36:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:36:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:36:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:36:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:36:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:36:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:36:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:36:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:36:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:36:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:36:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:36:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:36:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:36:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:36:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:36:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:36:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:36:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:36:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:36:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:36:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:36:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:36:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:36:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:36:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:36:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:36:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:36:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-02-15 01:36:56,541 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:36:56,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628951630] [2022-02-15 01:36:56,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [628951630] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:36:56,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:36:56,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-15 01:36:56,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146021600] [2022-02-15 01:36:56,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:36:56,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-15 01:36:56,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:36:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-15 01:36:56,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 01:36:56,543 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) [2022-02-15 01:37:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:37:19,502 INFO L93 Difference]: Finished difference Result 612 states and 758 transitions. [2022-02-15 01:37:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 01:37:19,503 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 [2022-02-15 01:37:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:37:19,505 INFO L225 Difference]: With dead ends: 612 [2022-02-15 01:37:19,505 INFO L226 Difference]: Without dead ends: 601 [2022-02-15 01:37:19,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=648, Invalid=20814, Unknown=0, NotChecked=0, Total=21462 [2022-02-15 01:37:19,506 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 643 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 47743 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s 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, 13.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:37:19,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 466 Invalid, 48515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [772 Valid, 47743 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-02-15 01:37:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-02-15 01:37:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 310. [2022-02-15 01:37:19,706 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) [2022-02-15 01:37:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 382 transitions. [2022-02-15 01:37:19,707 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 382 transitions. Word has length 581 [2022-02-15 01:37:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:37:19,707 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 382 transitions. [2022-02-15 01:37:19,707 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) [2022-02-15 01:37:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 382 transitions. [2022-02-15 01:37:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-02-15 01:37:19,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:37:19,710 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] [2022-02-15 01:37:19,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 01:37:19,710 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:37:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:37:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -247159647, now seen corresponding path program 72 times [2022-02-15 01:37:19,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:37:19,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003926222] [2022-02-15 01:37:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:37:19,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:19,714 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:37:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:37:19,717 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:37:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:37:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:37:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:37:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:37:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:37:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:37:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:37:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:37:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:37:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:37:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:37:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:37:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:37:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:37:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:37:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:37:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:37:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:37:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:37:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:37:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:37:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:37:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:37:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:37:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:37:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:37:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:37:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:37:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:37:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:37:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:37:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:37:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:37:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:37:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:37:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:37:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:37:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:37:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:37:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:37:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:37:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:37:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:37:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:37:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:37:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:37:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:37:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:37:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:37:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:37:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:37:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:37:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:37:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:37:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:37:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:37:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:37:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:37:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:37:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:37:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:37:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:37:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:37:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:37:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:37:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:37:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:37:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:37:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:37:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:37:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:37:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:37:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:37:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-02-15 01:37:21,663 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:37:21,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003926222] [2022-02-15 01:37:21,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1003926222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:37:21,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:37:21,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-15 01:37:21,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913640176] [2022-02-15 01:37:21,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:37:21,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 01:37:21,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:37:21,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 01:37:21,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 01:37:21,665 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) [2022-02-15 01:37:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:37:46,596 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2022-02-15 01:37:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 01:37:46,597 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 [2022-02-15 01:37:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:37:46,599 INFO L225 Difference]: With dead ends: 620 [2022-02-15 01:37:46,599 INFO L226 Difference]: Without dead ends: 609 [2022-02-15 01:37:46,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=657, Invalid=21395, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 01:37:46,600 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 601 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 53014 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s 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, 14.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:37:46,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 599 Invalid, 53746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [732 Valid, 53014 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-02-15 01:37:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-02-15 01:37:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 314. [2022-02-15 01:37:46,845 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) [2022-02-15 01:37:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 387 transitions. [2022-02-15 01:37:46,846 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 387 transitions. Word has length 589 [2022-02-15 01:37:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:37:46,846 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 387 transitions. [2022-02-15 01:37:46,846 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) [2022-02-15 01:37:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 387 transitions. [2022-02-15 01:37:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-02-15 01:37:46,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:37:46,850 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] [2022-02-15 01:37:46,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 01:37:46,850 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:37:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:37:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -476400644, now seen corresponding path program 73 times [2022-02-15 01:37:46,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:37:46,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968180431] [2022-02-15 01:37:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:37:46,875 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:46,875 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:37:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:37:46,878 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:37:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:37:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:37:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:37:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:37:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:37:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:37:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:37:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:37:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:37:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:37:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:37:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:37:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:37:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:37:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:37:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:37:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:37:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:37:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:37:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:37:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:37:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:37:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:37:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:37:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:37:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:37:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:37:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:37:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:37:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:37:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:37:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:37:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:37:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:37:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:37:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:37:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:37:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:37:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:37:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:37:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:37:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:37:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:37:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:37:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:37:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:37:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:37:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:37:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:37:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:37:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:37:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:37:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:37:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:37:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:37:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:37:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:37:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:37:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:37:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:37:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:37:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:37:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:37:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:37:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:37:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:37:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:37:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:37:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:37:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:37:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:37:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:37:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:37:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:37:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-02-15 01:37:49,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:37:49,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968180431] [2022-02-15 01:37:49,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [968180431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:37:49,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:37:49,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-15 01:37:49,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235094968] [2022-02-15 01:37:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:37:49,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-15 01:37:49,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:37:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-15 01:37:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 01:37:49,291 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) [2022-02-15 01:38:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:38:12,623 INFO L93 Difference]: Finished difference Result 628 states and 778 transitions. [2022-02-15 01:38:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 01:38:12,623 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 [2022-02-15 01:38:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:38:12,633 INFO L225 Difference]: With dead ends: 628 [2022-02-15 01:38:12,633 INFO L226 Difference]: Without dead ends: 617 [2022-02-15 01:38:12,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=666, Invalid=21984, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 01:38:12,634 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 731 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44903 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s 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, 12.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:38:12,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 302 Invalid, 45767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [864 Valid, 44903 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-02-15 01:38:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-02-15 01:38:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 318. [2022-02-15 01:38:12,904 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) [2022-02-15 01:38:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2022-02-15 01:38:12,905 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 597 [2022-02-15 01:38:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:38:12,906 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2022-02-15 01:38:12,907 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) [2022-02-15 01:38:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2022-02-15 01:38:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-02-15 01:38:12,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:38:12,911 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] [2022-02-15 01:38:12,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 01:38:12,912 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:38:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:38:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash -691718057, now seen corresponding path program 74 times [2022-02-15 01:38:12,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:38:12,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305118698] [2022-02-15 01:38:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:38:12,916 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:38:12,917 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:38:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:38:12,920 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:38:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:38:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:38:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:38:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:38:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:38:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:38:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:38:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:38:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:38:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:38:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:38:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:38:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:38:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:38:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:38:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:38:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:38:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:38:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:38:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:38:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:38:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:38:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:38:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:38:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:38:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:38:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:38:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:38:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:38:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:38:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:38:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:38:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:38:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:38:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:38:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:38:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:38:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:38:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:38:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:38:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:38:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:38:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:38:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:38:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:38:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:38:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:38:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:38:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:38:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:38:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:38:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:38:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:38:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:38:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:38:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:38:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:38:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:38:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:38:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:38:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:38:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:38:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:38:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:38:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:38:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:38:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:38:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:38:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:38:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:38:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:38:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:38:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:38:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:38:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:38:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-02-15 01:38:15,319 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:38:15,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305118698] [2022-02-15 01:38:15,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1305118698] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:38:15,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:38:15,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-15 01:38:15,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045057781] [2022-02-15 01:38:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:38:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-15 01:38:15,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:38:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-15 01:38:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 01:38:15,322 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) [2022-02-15 01:38:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:38:41,580 INFO L93 Difference]: Finished difference Result 636 states and 788 transitions. [2022-02-15 01:38:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 01:38:41,580 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 605 [2022-02-15 01:38:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:38:41,595 INFO L225 Difference]: With dead ends: 636 [2022-02-15 01:38:41,595 INFO L226 Difference]: Without dead ends: 625 [2022-02-15 01:38:41,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=675, Invalid=22581, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 01:38:41,597 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 647 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 53581 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 54363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 53581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:38:41,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 540 Invalid, 54363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [782 Valid, 53581 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-02-15 01:38:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-02-15 01:38:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 322. [2022-02-15 01:38:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 240 states have internal predecessors, (242), 78 states have call successors, (78), 4 states have call predecessors, (78), 3 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-02-15 01:38:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 397 transitions. [2022-02-15 01:38:41,814 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 397 transitions. Word has length 605 [2022-02-15 01:38:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:38:41,815 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 397 transitions. [2022-02-15 01:38:41,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-02-15 01:38:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 397 transitions. [2022-02-15 01:38:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-02-15 01:38:41,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:38:41,837 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:38:41,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 01:38:41,837 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:38:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:38:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash -41995854, now seen corresponding path program 75 times [2022-02-15 01:38:41,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:38:41,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997747343] [2022-02-15 01:38:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:38:41,840 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:38:41,840 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:38:41,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:38:41,843 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:38:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:38:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:38:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:38:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:38:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:38:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:38:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:38:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:38:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:38:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:38:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:38:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:38:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:38:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:38:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:38:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:38:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:38:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:38:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:38:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:38:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:38:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:38:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:38:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:38:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:38:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:38:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:38:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:38:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:38:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:38:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:38:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:38:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:38:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:38:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:38:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:38:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:38:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:38:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:38:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:38:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:38:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:38:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:38:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:38:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:38:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:38:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:38:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:38:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:38:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:38:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:38:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:38:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:38:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:38:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:38:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:38:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:38:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:38:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:38:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:38:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:38:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:38:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:38:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:38:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:38:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:38:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:38:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:38:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:38:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:38:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:38:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:38:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:38:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:38:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:38:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:38:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-02-15 01:38:44,466 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:38:44,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997747343] [2022-02-15 01:38:44,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1997747343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:38:44,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:38:44,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-15 01:38:44,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087011956] [2022-02-15 01:38:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:38:44,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-15 01:38:44,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:38:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-15 01:38:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 01:38:44,468 INFO L87 Difference]: Start difference. First operand 322 states and 397 transitions. Second operand has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-02-15 01:39:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:39:10,511 INFO L93 Difference]: Finished difference Result 644 states and 798 transitions. [2022-02-15 01:39:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 01:39:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 613 [2022-02-15 01:39:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:39:10,513 INFO L225 Difference]: With dead ends: 644 [2022-02-15 01:39:10,513 INFO L226 Difference]: Without dead ends: 633 [2022-02-15 01:39:10,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2851 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=684, Invalid=23186, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 01:39:10,515 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 653 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 55218 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 56008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 55218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:39:10,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 553 Invalid, 56008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [790 Valid, 55218 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-02-15 01:39:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-02-15 01:39:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 326. [2022-02-15 01:39:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 243 states have (on average 1.008230452674897) internal successors, (245), 243 states have internal predecessors, (245), 79 states have call successors, (79), 4 states have call predecessors, (79), 3 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-02-15 01:39:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 402 transitions. [2022-02-15 01:39:10,741 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 402 transitions. Word has length 613 [2022-02-15 01:39:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:39:10,741 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 402 transitions. [2022-02-15 01:39:10,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-02-15 01:39:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 402 transitions. [2022-02-15 01:39:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-02-15 01:39:10,744 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:39:10,745 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:39:10,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 01:39:10,745 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:39:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:39:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1618763763, now seen corresponding path program 76 times [2022-02-15 01:39:10,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:39:10,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822120308] [2022-02-15 01:39:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:39:10,747 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:39:10,747 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:39:10,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:39:10,751 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:39:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:39:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:39:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:39:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:39:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:39:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:39:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:39:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:39:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:39:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:39:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:39:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:39:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:39:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:39:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:39:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:39:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:39:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:39:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:39:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:39:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:39:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:39:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:39:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:39:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:39:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:39:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:39:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:39:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:39:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:39:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:39:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:39:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:39:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:39:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:39:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:39:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:39:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:39:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:39:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:39:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:39:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:39:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:39:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:39:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:39:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:39:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:39:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:39:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:39:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:39:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:39:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:39:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:39:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:39:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:39:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:39:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:39:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:39:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:39:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:39:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:39:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:39:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:39:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:39:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:39:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:39:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:39:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:39:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:39:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:39:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:39:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:39:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:39:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:39:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:39:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:39:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-02-15 01:39:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-02-15 01:39:13,202 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:39:13,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822120308] [2022-02-15 01:39:13,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822120308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:39:13,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:39:13,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-15 01:39:13,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653342161] [2022-02-15 01:39:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:39:13,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-15 01:39:13,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:39:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-15 01:39:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 01:39:13,204 INFO L87 Difference]: Start difference. First operand 326 states and 402 transitions. Second operand has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-02-15 01:39:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:39:40,829 INFO L93 Difference]: Finished difference Result 652 states and 808 transitions. [2022-02-15 01:39:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 01:39:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 621 [2022-02-15 01:39:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:39:40,831 INFO L225 Difference]: With dead ends: 652 [2022-02-15 01:39:40,831 INFO L226 Difference]: Without dead ends: 641 [2022-02-15 01:39:40,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=693, Invalid=23799, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 01:39:40,833 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 691 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 54271 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 55101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 54271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:39:40,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 486 Invalid, 55101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [830 Valid, 54271 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-02-15 01:39:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-02-15 01:39:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 330. [2022-02-15 01:39:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 246 states have (on average 1.008130081300813) internal successors, (248), 246 states have internal predecessors, (248), 80 states have call successors, (80), 4 states have call predecessors, (80), 3 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-02-15 01:39:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 407 transitions. [2022-02-15 01:39:41,083 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 407 transitions. Word has length 621 [2022-02-15 01:39:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:39:41,083 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 407 transitions. [2022-02-15 01:39:41,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-02-15 01:39:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 407 transitions. [2022-02-15 01:39:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-02-15 01:39:41,086 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:39:41,086 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:39:41,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 01:39:41,087 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:39:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:39:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 428704616, now seen corresponding path program 77 times [2022-02-15 01:39:41,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:39:41,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889586524] [2022-02-15 01:39:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:39:41,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:39:41,089 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:39:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:39:41,092 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:39:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:39:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:39:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:39:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:39:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:39:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:39:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:39:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:39:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:39:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:39:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:39:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:39:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:39:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:39:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:39:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:39:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:39:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:39:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:39:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:39:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:39:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:39:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:39:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:39:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:39:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:39:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:39:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:39:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:39:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:39:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:39:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:39:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:39:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:39:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:39:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:39:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:39:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:39:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:39:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:39:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:39:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:39:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:39:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:39:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:39:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:39:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:39:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:39:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:39:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:39:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:39:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:39:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:39:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:39:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:39:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:39:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:39:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:39:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:39:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:39:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:39:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:39:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:39:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:39:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:39:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:39:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:39:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:39:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:39:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:39:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:39:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:39:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:39:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:39:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:39:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:39:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-02-15 01:39:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-02-15 01:39:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:39:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-02-15 01:39:43,830 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:39:43,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889586524] [2022-02-15 01:39:43,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889586524] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:39:43,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:39:43,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-15 01:39:43,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621099925] [2022-02-15 01:39:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:39:43,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-15 01:39:43,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:39:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-15 01:39:43,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 01:39:43,832 INFO L87 Difference]: Start difference. First operand 330 states and 407 transitions. Second operand has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-02-15 01:40:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:40:13,522 INFO L93 Difference]: Finished difference Result 660 states and 818 transitions. [2022-02-15 01:40:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 01:40:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 629 [2022-02-15 01:40:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:40:13,527 INFO L225 Difference]: With dead ends: 660 [2022-02-15 01:40:13,528 INFO L226 Difference]: Without dead ends: 649 [2022-02-15 01:40:13,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3004 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=702, Invalid=24420, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 01:40:13,534 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 787 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 48499 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 49427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 48499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:40:13,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 274 Invalid, 49427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 48499 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-02-15 01:40:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-02-15 01:40:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 334. [2022-02-15 01:40:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 249 states have internal predecessors, (251), 81 states have call successors, (81), 4 states have call predecessors, (81), 3 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-02-15 01:40:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 412 transitions. [2022-02-15 01:40:13,765 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 412 transitions. Word has length 629 [2022-02-15 01:40:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:40:13,765 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 412 transitions. [2022-02-15 01:40:13,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-02-15 01:40:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 412 transitions. [2022-02-15 01:40:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-02-15 01:40:13,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:40:13,769 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:40:13,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 01:40:13,769 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:40:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:40:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -581444669, now seen corresponding path program 78 times [2022-02-15 01:40:13,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:40:13,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829119594] [2022-02-15 01:40:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:40:13,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:40:13,771 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:40:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:40:13,775 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:40:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:40:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:40:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:40:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:40:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:40:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:40:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:40:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:40:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:40:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:40:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:40:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:40:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:40:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:40:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:40:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:40:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:40:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:40:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:40:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:40:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:40:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:40:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:40:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:40:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:40:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:40:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:40:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:40:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:40:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:40:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:40:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:40:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:40:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:40:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:40:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:40:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:40:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:40:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:40:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:40:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:40:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:40:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:40:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:40:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:40:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:40:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:40:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:40:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:40:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:40:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:40:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:40:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:40:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:40:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:40:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:40:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:40:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:40:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:40:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:40:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:40:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:40:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:40:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:40:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:40:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:40:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:40:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:40:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:40:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:40:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:40:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:40:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:40:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:40:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:40:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-02-15 01:40:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-02-15 01:40:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2022-02-15 01:40:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-02-15 01:40:16,580 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:40:16,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829119594] [2022-02-15 01:40:16,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [829119594] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:40:16,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:40:16,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-15 01:40:16,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573661763] [2022-02-15 01:40:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:40:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-15 01:40:16,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:40:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-15 01:40:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 01:40:16,582 INFO L87 Difference]: Start difference. First operand 334 states and 412 transitions. Second operand has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-02-15 01:40:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:40:49,836 INFO L93 Difference]: Finished difference Result 668 states and 828 transitions. [2022-02-15 01:40:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-15 01:40:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 637 [2022-02-15 01:40:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:40:49,838 INFO L225 Difference]: With dead ends: 668 [2022-02-15 01:40:49,838 INFO L226 Difference]: Without dead ends: 657 [2022-02-15 01:40:49,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=711, Invalid=25049, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 01:40:49,840 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 649 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 62110 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 62902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 62110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:40:49,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 647 Invalid, 62902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [792 Valid, 62110 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2022-02-15 01:40:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-02-15 01:40:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 338. [2022-02-15 01:40:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 82 states have call successors, (82), 4 states have call predecessors, (82), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-02-15 01:40:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 417 transitions. [2022-02-15 01:40:50,101 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 417 transitions. Word has length 637 [2022-02-15 01:40:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:40:50,102 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 417 transitions. [2022-02-15 01:40:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-02-15 01:40:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 417 transitions. [2022-02-15 01:40:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2022-02-15 01:40:50,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:40:50,105 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:40:50,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 01:40:50,106 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:40:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:40:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1906157854, now seen corresponding path program 79 times [2022-02-15 01:40:50,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:40:50,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029875222] [2022-02-15 01:40:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:40:50,108 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:40:50,108 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:40:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:40:50,112 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:40:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:40:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:40:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:40:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:40:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:40:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:40:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:40:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:40:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:40:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:40:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:40:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:40:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:40:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:40:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:40:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:40:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:40:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:40:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:40:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:40:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:40:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:40:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:40:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:40:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:40:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:40:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:40:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:40:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:40:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:40:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:40:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:40:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:40:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:40:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:40:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:40:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:40:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:40:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:40:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:40:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:40:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:40:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:40:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:40:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:40:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:40:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:40:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:40:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:40:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:40:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:40:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:40:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:40:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:40:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:40:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:40:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:40:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:40:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:40:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:40:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:40:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:40:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:40:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:40:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:40:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:40:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:40:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:40:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:40:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:40:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:40:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:40:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:40:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:40:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:40:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:40:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-02-15 01:40:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-02-15 01:40:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2022-02-15 01:40:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2022-02-15 01:40:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:40:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-02-15 01:40:52,570 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:40:52,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029875222] [2022-02-15 01:40:52,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1029875222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:40:52,570 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:40:52,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-15 01:40:52,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258025839] [2022-02-15 01:40:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:40:52,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-15 01:40:52,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:40:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-15 01:40:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 01:40:52,572 INFO L87 Difference]: Start difference. First operand 338 states and 417 transitions. Second operand has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-02-15 01:41:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:41:23,995 INFO L93 Difference]: Finished difference Result 676 states and 838 transitions. [2022-02-15 01:41:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 01:41:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 645 [2022-02-15 01:41:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:41:24,005 INFO L225 Difference]: With dead ends: 676 [2022-02-15 01:41:24,005 INFO L226 Difference]: Without dead ends: 665 [2022-02-15 01:41:24,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3161 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=720, Invalid=25686, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 01:41:24,007 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 753 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 55584 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 56482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 55584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:41:24,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 415 Invalid, 56482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [898 Valid, 55584 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2022-02-15 01:41:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-02-15 01:41:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 342. [2022-02-15 01:41:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 255 states have (on average 1.007843137254902) internal successors, (257), 255 states have internal predecessors, (257), 83 states have call successors, (83), 4 states have call predecessors, (83), 3 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-02-15 01:41:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 422 transitions. [2022-02-15 01:41:24,299 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 422 transitions. Word has length 645 [2022-02-15 01:41:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:41:24,300 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 422 transitions. [2022-02-15 01:41:24,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-02-15 01:41:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 422 transitions. [2022-02-15 01:41:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-02-15 01:41:24,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:41:24,304 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:41:24,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 01:41:24,304 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:41:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:41:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1914301305, now seen corresponding path program 80 times [2022-02-15 01:41:24,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:41:24,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610395254] [2022-02-15 01:41:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:41:24,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:41:24,312 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 01:41:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:41:24,318 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:41:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:41:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 01:41:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 01:41:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 01:41:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 01:41:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 01:41:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 01:41:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-15 01:41:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-15 01:41:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-02-15 01:41:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-02-15 01:41:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-02-15 01:41:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-15 01:41:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-15 01:41:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-02-15 01:41:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-02-15 01:41:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-02-15 01:41:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-02-15 01:41:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-02-15 01:41:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-02-15 01:41:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-02-15 01:41:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-02-15 01:41:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-02-15 01:41:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-02-15 01:41:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-02-15 01:41:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-02-15 01:41:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-02-15 01:41:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-02-15 01:41:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-02-15 01:41:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-02-15 01:41:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-02-15 01:41:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-02-15 01:41:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-02-15 01:41:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-02-15 01:41:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-02-15 01:41:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-02-15 01:41:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-02-15 01:41:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-02-15 01:41:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-02-15 01:41:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-02-15 01:41:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-02-15 01:41:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-02-15 01:41:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-02-15 01:41:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-02-15 01:41:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-02-15 01:41:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-02-15 01:41:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-02-15 01:41:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-02-15 01:41:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-02-15 01:41:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-02-15 01:41:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-02-15 01:41:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-02-15 01:41:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-02-15 01:41:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-02-15 01:41:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-02-15 01:41:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-02-15 01:41:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-02-15 01:41:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-02-15 01:41:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-02-15 01:41:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-02-15 01:41:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-02-15 01:41:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-02-15 01:41:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-02-15 01:41:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-02-15 01:41:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-02-15 01:41:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-02-15 01:41:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-02-15 01:41:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-02-15 01:41:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-02-15 01:41:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-02-15 01:41:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-02-15 01:41:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-02-15 01:41:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-02-15 01:41:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-02-15 01:41:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-02-15 01:41:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-02-15 01:41:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-02-15 01:41:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-02-15 01:41:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2022-02-15 01:41:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2022-02-15 01:41:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2022-02-15 01:41:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:41:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-02-15 01:41:27,265 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:41:27,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610395254] [2022-02-15 01:41:27,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1610395254] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:41:27,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:41:27,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-15 01:41:27,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468432956] [2022-02-15 01:41:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:41:27,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 01:41:27,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:41:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 01:41:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 01:41:27,268 INFO L87 Difference]: Start difference. First operand 342 states and 422 transitions. Second operand has 84 states, 84 states have (on average 3.0) internal successors, (252), 83 states have internal predecessors, (252), 82 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81)