/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/openssl-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 18:51:57,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 18:51:57,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 18:51:57,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 18:51:57,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 18:51:57,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 18:51:57,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 18:51:57,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 18:51:57,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 18:51:57,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 18:51:57,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 18:51:57,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 18:51:57,119 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 18:51:57,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 18:51:57,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 18:51:57,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 18:51:57,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 18:51:57,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 18:51:57,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 18:51:57,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 18:51:57,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 18:51:57,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 18:51:57,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 18:51:57,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 18:51:57,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 18:51:57,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 18:51:57,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 18:51:57,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 18:51:57,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 18:51:57,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 18:51:57,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 18:51:57,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 18:51:57,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:57,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 18:51:57,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 18:51:57,165 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 18:51:57,165 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 18:51:57,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 18:51:57,165 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 18:51:57,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 18:51:57,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 18:51:57,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 18:51:57,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 18:51:57,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 18:51:57,388 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 18:51:57,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-04-06 18:51:57,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e66b62a/f9592660311d419aa992d460d453654e/FLAGa03a3656c [2022-04-06 18:51:57,737 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 18:51:57,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-04-06 18:51:57,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e66b62a/f9592660311d419aa992d460d453654e/FLAGa03a3656c [2022-04-06 18:51:58,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e66b62a/f9592660311d419aa992d460d453654e [2022-04-06 18:51:58,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 18:51:58,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 18:51:58,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:58,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 18:51:58,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 18:51:58,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197a4ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58, skipping insertion in model container [2022-04-06 18:51:58,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 18:51:58,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 18:51:58,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-04-06 18:51:58,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:58,315 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 18:51:58,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-04-06 18:51:58,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 18:51:58,342 INFO L208 MainTranslator]: Completed translation [2022-04-06 18:51:58,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58 WrapperNode [2022-04-06 18:51:58,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 18:51:58,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 18:51:58,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 18:51:58,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 18:51:58,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 18:51:58,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 18:51:58,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 18:51:58,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 18:51:58,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (1/1) ... [2022-04-06 18:51:58,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 18:51:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:51:58,397 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) [2022-04-06 18:51:58,416 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 [2022-04-06 18:51:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 18:51:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 18:51:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 18:51:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 18:51:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 18:51:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 18:51:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 18:51:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 18:51:58,477 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 18:51:58,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 18:51:58,643 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 18:51:58,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 18:51:58,647 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 18:51:58,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:58 BoogieIcfgContainer [2022-04-06 18:51:58,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 18:51:58,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 18:51:58,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 18:51:58,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 18:51:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:51:58" (1/3) ... [2022-04-06 18:51:58,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:58, skipping insertion in model container [2022-04-06 18:51:58,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:51:58" (2/3) ... [2022-04-06 18:51:58,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:51:58, skipping insertion in model container [2022-04-06 18:51:58,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:51:58" (3/3) ... [2022-04-06 18:51:58,654 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2022-04-06 18:51:58,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 18:51:58,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 18:51:58,682 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 18:51:58,686 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-04-06 18:51:58,686 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 18:51:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 18:51:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-06 18:51:58,701 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:58,701 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:58,702 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1713790110, now seen corresponding path program 1 times [2022-04-06 18:51:58,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1495026117] [2022-04-06 18:51:58,717 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 18:51:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1713790110, now seen corresponding path program 2 times [2022-04-06 18:51:58,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:58,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029756692] [2022-04-06 18:51:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:58,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029756692] [2022-04-06 18:51:58,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029756692] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,876 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:58,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1495026117] [2022-04-06 18:51:58,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1495026117] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:58,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:58,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 18:51:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354235488] [2022-04-06 18:51:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:58,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 18:51:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 18:51:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 18:51:58,906 INFO L87 Difference]: Start difference. First operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:59,086 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2022-04-06 18:51:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 18:51:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-04-06 18:51:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:59,093 INFO L225 Difference]: With dead ends: 136 [2022-04-06 18:51:59,093 INFO L226 Difference]: Without dead ends: 83 [2022-04-06 18:51:59,095 INFO L912 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 [2022-04-06 18:51:59,097 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:59,098 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 79 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-04-06 18:51:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-04-06 18:51:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.5443037974683544) internal successors, (122), 79 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2022-04-06 18:51:59,127 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 9 [2022-04-06 18:51:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:59,127 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2022-04-06 18:51:59,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2022-04-06 18:51:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 18:51:59,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:59,128 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:59,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 18:51:59,128 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1144534844, now seen corresponding path program 1 times [2022-04-06 18:51:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [421029776] [2022-04-06 18:51:59,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:51:59,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:51:59,234 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:51:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 162574473, now seen corresponding path program 1 times [2022-04-06 18:51:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:51:59,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242275234] [2022-04-06 18:51:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:51:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:51:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 18:51:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:51:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242275234] [2022-04-06 18:51:59,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242275234] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:51:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496071134] [2022-04-06 18:51:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:51:59,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:51:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:51:59,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:51:59,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 18:51:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:51:59,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 18:51:59,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:51:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 18:51:59,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:51:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-06 18:51:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496071134] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 18:51:59,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-06 18:51:59,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 7 [2022-04-06 18:51:59,590 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:51:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [421029776] [2022-04-06 18:51:59,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [421029776] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:51:59,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:51:59,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 18:51:59,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245922671] [2022-04-06 18:51:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:51:59,591 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 18:51:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 18:51:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-06 18:51:59,592 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:51:59,751 INFO L93 Difference]: Finished difference Result 175 states and 273 transitions. [2022-04-06 18:51:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 18:51:59,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-06 18:51:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:51:59,752 INFO L225 Difference]: With dead ends: 175 [2022-04-06 18:51:59,752 INFO L226 Difference]: Without dead ends: 98 [2022-04-06 18:51:59,753 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-06 18:51:59,754 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 64 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 18:51:59,754 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 154 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 18:51:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-04-06 18:51:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-04-06 18:51:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 93 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2022-04-06 18:51:59,778 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 14 [2022-04-06 18:51:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:51:59,778 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2022-04-06 18:51:59,779 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:51:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2022-04-06 18:51:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-06 18:51:59,781 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:51:59,782 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:51:59,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 18:51:59,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:51:59,988 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:51:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:51:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -674137767, now seen corresponding path program 1 times [2022-04-06 18:51:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:51:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [43689606] [2022-04-06 18:52:00,015 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,046 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,090 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:00,126 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash 893692037, now seen corresponding path program 1 times [2022-04-06 18:52:00,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:00,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935204161] [2022-04-06 18:52:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:00,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-06 18:52:00,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:00,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935204161] [2022-04-06 18:52:00,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935204161] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:00,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143670197] [2022-04-06 18:52:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:00,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:00,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:00,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 18:52:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:00,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 18:52:00,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 18:52:00,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 18:52:00,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143670197] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:00,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:00,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-04-06 18:52:00,681 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:00,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [43689606] [2022-04-06 18:52:00,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [43689606] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:00,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:00,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 18:52:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91653888] [2022-04-06 18:52:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:00,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 18:52:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 18:52:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-04-06 18:52:00,684 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:00,943 INFO L93 Difference]: Finished difference Result 197 states and 291 transitions. [2022-04-06 18:52:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 18:52:00,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-04-06 18:52:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:00,947 INFO L225 Difference]: With dead ends: 197 [2022-04-06 18:52:00,947 INFO L226 Difference]: Without dead ends: 110 [2022-04-06 18:52:00,947 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-04-06 18:52:00,948 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 209 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:00,949 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 70 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:52:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-06 18:52:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-04-06 18:52:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4476190476190476) internal successors, (152), 105 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2022-04-06 18:52:00,959 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 35 [2022-04-06 18:52:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:00,959 INFO L478 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2022-04-06 18:52:00,959 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2022-04-06 18:52:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-06 18:52:00,960 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:00,960 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:00,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:01,161 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 18:52:01,161 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1014805975, now seen corresponding path program 1 times [2022-04-06 18:52:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:01,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [349540559] [2022-04-06 18:52:01,180 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,196 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,215 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,220 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:01,243 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 637718917, now seen corresponding path program 1 times [2022-04-06 18:52:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:01,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933827981] [2022-04-06 18:52:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-06 18:52:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933827981] [2022-04-06 18:52:01,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933827981] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320789713] [2022-04-06 18:52:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:01,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:01,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 18:52:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:01,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 18:52:01,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 18:52:01,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-06 18:52:01,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320789713] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:01,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:01,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2022-04-06 18:52:01,711 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:01,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [349540559] [2022-04-06 18:52:01,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [349540559] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:01,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:01,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 18:52:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383550061] [2022-04-06 18:52:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:01,712 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 18:52:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 18:52:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-04-06 18:52:01,713 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:02,142 INFO L93 Difference]: Finished difference Result 296 states and 454 transitions. [2022-04-06 18:52:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 18:52:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-04-06 18:52:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:02,144 INFO L225 Difference]: With dead ends: 296 [2022-04-06 18:52:02,144 INFO L226 Difference]: Without dead ends: 209 [2022-04-06 18:52:02,145 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-04-06 18:52:02,146 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 161 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:02,146 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 101 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-04-06 18:52:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 142. [2022-04-06 18:52:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.3405797101449275) internal successors, (185), 138 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 188 transitions. [2022-04-06 18:52:02,159 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 188 transitions. Word has length 35 [2022-04-06 18:52:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:02,160 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 188 transitions. [2022-04-06 18:52:02,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 188 transitions. [2022-04-06 18:52:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 18:52:02,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:02,161 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:02,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:02,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:02,380 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1646162945, now seen corresponding path program 1 times [2022-04-06 18:52:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:02,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [988384687] [2022-04-06 18:52:02,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,419 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,438 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,458 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:02,494 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2142772609, now seen corresponding path program 1 times [2022-04-06 18:52:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:02,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118072158] [2022-04-06 18:52:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 18:52:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118072158] [2022-04-06 18:52:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118072158] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469262278] [2022-04-06 18:52:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:02,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:02,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 18:52:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:02,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 18:52:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-06 18:52:02,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-04-06 18:52:02,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469262278] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:02,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:02,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 10 [2022-04-06 18:52:02,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [988384687] [2022-04-06 18:52:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [988384687] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:02,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 18:52:02,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561848878] [2022-04-06 18:52:02,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:02,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 18:52:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 18:52:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-04-06 18:52:02,992 INFO L87 Difference]: Start difference. First operand 142 states and 188 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:03,261 INFO L93 Difference]: Finished difference Result 239 states and 334 transitions. [2022-04-06 18:52:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 18:52:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-04-06 18:52:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:03,263 INFO L225 Difference]: With dead ends: 239 [2022-04-06 18:52:03,263 INFO L226 Difference]: Without dead ends: 150 [2022-04-06 18:52:03,263 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-04-06 18:52:03,264 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 214 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:03,264 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 90 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:52:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-04-06 18:52:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-04-06 18:52:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 145 states have (on average 1.3241379310344827) internal successors, (192), 145 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2022-04-06 18:52:03,288 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 46 [2022-04-06 18:52:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:03,288 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2022-04-06 18:52:03,288 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2022-04-06 18:52:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 18:52:03,293 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:03,294 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:03,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:03,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:03,511 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 446239409, now seen corresponding path program 1 times [2022-04-06 18:52:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1740690087] [2022-04-06 18:52:03,532 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,551 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,590 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,628 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:03,633 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1713985539, now seen corresponding path program 1 times [2022-04-06 18:52:03,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720868486] [2022-04-06 18:52:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-04-06 18:52:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720868486] [2022-04-06 18:52:03,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720868486] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584188871] [2022-04-06 18:52:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:03,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:03,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:03,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:03,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 18:52:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:03,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-06 18:52:03,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-06 18:52:03,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584188871] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:03,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:03,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-04-06 18:52:04,055 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1740690087] [2022-04-06 18:52:04,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1740690087] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:04,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:04,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:52:04,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376338749] [2022-04-06 18:52:04,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:04,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 18:52:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 18:52:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-04-06 18:52:04,057 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:04,542 INFO L93 Difference]: Finished difference Result 306 states and 437 transitions. [2022-04-06 18:52:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 18:52:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-04-06 18:52:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:04,543 INFO L225 Difference]: With dead ends: 306 [2022-04-06 18:52:04,543 INFO L226 Difference]: Without dead ends: 184 [2022-04-06 18:52:04,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-04-06 18:52:04,545 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 157 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:04,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 127 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 18:52:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-04-06 18:52:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 118. [2022-04-06 18:52:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 114 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 163 transitions. [2022-04-06 18:52:04,557 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 163 transitions. Word has length 52 [2022-04-06 18:52:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:04,557 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 163 transitions. [2022-04-06 18:52:04,557 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 163 transitions. [2022-04-06 18:52:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 18:52:04,558 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:04,558 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:04,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-06 18:52:04,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:04,772 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -635363305, now seen corresponding path program 1 times [2022-04-06 18:52:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [670145774] [2022-04-06 18:52:04,797 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,814 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,864 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,886 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,917 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:04,917 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1359903999, now seen corresponding path program 1 times [2022-04-06 18:52:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291937827] [2022-04-06 18:52:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-04-06 18:52:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291937827] [2022-04-06 18:52:04,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291937827] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109985258] [2022-04-06 18:52:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:04,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:04,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:04,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:04,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 18:52:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:05,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:05,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 18:52:05,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-04-06 18:52:05,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109985258] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:05,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:05,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 11 [2022-04-06 18:52:05,408 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:05,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [670145774] [2022-04-06 18:52:05,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [670145774] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:05,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:05,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 18:52:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266451255] [2022-04-06 18:52:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:05,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 18:52:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 18:52:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-06 18:52:05,410 INFO L87 Difference]: Start difference. First operand 118 states and 163 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:05,730 INFO L93 Difference]: Finished difference Result 221 states and 321 transitions. [2022-04-06 18:52:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 18:52:05,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-04-06 18:52:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:05,731 INFO L225 Difference]: With dead ends: 221 [2022-04-06 18:52:05,731 INFO L226 Difference]: Without dead ends: 132 [2022-04-06 18:52:05,732 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2022-04-06 18:52:05,732 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 256 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:05,733 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 98 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 18:52:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-06 18:52:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2022-04-06 18:52:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2022-04-06 18:52:05,742 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 53 [2022-04-06 18:52:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:05,742 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2022-04-06 18:52:05,742 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2022-04-06 18:52:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 18:52:05,743 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:05,743 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:05,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:05,961 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:05,962 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1136660245, now seen corresponding path program 1 times [2022-04-06 18:52:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [225987912] [2022-04-06 18:52:05,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:05,996 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,010 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,027 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,045 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,063 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,069 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,083 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,101 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,113 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:06,129 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash 361171325, now seen corresponding path program 1 times [2022-04-06 18:52:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:06,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748627939] [2022-04-06 18:52:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-04-06 18:52:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748627939] [2022-04-06 18:52:06,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748627939] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808398205] [2022-04-06 18:52:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:06,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:06,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:06,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:06,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 18:52:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:06,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 18:52:06,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-04-06 18:52:06,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:06,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808398205] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:06,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:06,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 11 [2022-04-06 18:52:06,658 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [225987912] [2022-04-06 18:52:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [225987912] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:06,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:06,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 18:52:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398646373] [2022-04-06 18:52:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:06,659 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 18:52:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 18:52:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-04-06 18:52:06,659 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:07,061 INFO L93 Difference]: Finished difference Result 230 states and 331 transitions. [2022-04-06 18:52:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 18:52:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-04-06 18:52:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:07,062 INFO L225 Difference]: With dead ends: 230 [2022-04-06 18:52:07,062 INFO L226 Difference]: Without dead ends: 141 [2022-04-06 18:52:07,063 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-04-06 18:52:07,063 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 274 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:07,064 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 102 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-04-06 18:52:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2022-04-06 18:52:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.3587786259541985) internal successors, (178), 131 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 181 transitions. [2022-04-06 18:52:07,073 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 181 transitions. Word has length 61 [2022-04-06 18:52:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:07,073 INFO L478 AbstractCegarLoop]: Abstraction has 135 states and 181 transitions. [2022-04-06 18:52:07,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 181 transitions. [2022-04-06 18:52:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 18:52:07,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:07,074 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:07,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:07,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:07,287 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 911601347, now seen corresponding path program 1 times [2022-04-06 18:52:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:07,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [380763637] [2022-04-06 18:52:07,302 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,332 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,361 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,425 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,445 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,447 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:07,465 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1888396675, now seen corresponding path program 1 times [2022-04-06 18:52:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:07,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445943000] [2022-04-06 18:52:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-06 18:52:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:07,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445943000] [2022-04-06 18:52:07,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445943000] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:07,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422153910] [2022-04-06 18:52:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:07,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:07,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:07,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 18:52:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:07,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 18:52:07,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-06 18:52:07,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:07,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422153910] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:07,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:07,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 10 [2022-04-06 18:52:08,109 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [380763637] [2022-04-06 18:52:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [380763637] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:08,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:08,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 18:52:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737770726] [2022-04-06 18:52:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:08,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 18:52:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 18:52:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-04-06 18:52:08,111 INFO L87 Difference]: Start difference. First operand 135 states and 181 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:08,588 INFO L93 Difference]: Finished difference Result 241 states and 344 transitions. [2022-04-06 18:52:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 18:52:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-04-06 18:52:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:08,590 INFO L225 Difference]: With dead ends: 241 [2022-04-06 18:52:08,590 INFO L226 Difference]: Without dead ends: 152 [2022-04-06 18:52:08,590 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2022-04-06 18:52:08,591 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 259 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:08,591 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 109 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-04-06 18:52:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2022-04-06 18:52:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 135 states have (on average 1.3777777777777778) internal successors, (186), 135 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 189 transitions. [2022-04-06 18:52:08,602 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 189 transitions. Word has length 63 [2022-04-06 18:52:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:08,602 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 189 transitions. [2022-04-06 18:52:08,602 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 189 transitions. [2022-04-06 18:52:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 18:52:08,602 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:08,602 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:08,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:08,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-06 18:52:08,816 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1287560817, now seen corresponding path program 1 times [2022-04-06 18:52:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1046062725] [2022-04-06 18:52:08,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,839 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,866 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,884 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,905 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,938 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,962 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:08,985 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash 157002621, now seen corresponding path program 1 times [2022-04-06 18:52:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:08,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939041613] [2022-04-06 18:52:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 18:52:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939041613] [2022-04-06 18:52:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939041613] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179225430] [2022-04-06 18:52:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:09,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:09,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:09,056 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:09,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 18:52:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:09,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 18:52:09,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-04-06 18:52:09,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:09,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179225430] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:09,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:09,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2022-04-06 18:52:09,582 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1046062725] [2022-04-06 18:52:09,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1046062725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:09,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:09,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 18:52:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225560739] [2022-04-06 18:52:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:09,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 18:52:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:09,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 18:52:09,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2022-04-06 18:52:09,584 INFO L87 Difference]: Start difference. First operand 139 states and 189 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:10,082 INFO L93 Difference]: Finished difference Result 242 states and 345 transitions. [2022-04-06 18:52:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 18:52:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-04-06 18:52:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:10,083 INFO L225 Difference]: With dead ends: 242 [2022-04-06 18:52:10,083 INFO L226 Difference]: Without dead ends: 153 [2022-04-06 18:52:10,084 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 18:52:10,084 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 275 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:10,085 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 72 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-04-06 18:52:10,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 139. [2022-04-06 18:52:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 135 states have (on average 1.3777777777777778) internal successors, (186), 135 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 189 transitions. [2022-04-06 18:52:10,096 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 189 transitions. Word has length 64 [2022-04-06 18:52:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:10,096 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 189 transitions. [2022-04-06 18:52:10,096 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 189 transitions. [2022-04-06 18:52:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 18:52:10,096 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:10,096 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:10,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:10,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-06 18:52:10,299 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1083815954, now seen corresponding path program 1 times [2022-04-06 18:52:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1191710383] [2022-04-06 18:52:10,313 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,355 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,359 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,403 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,413 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,427 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,480 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:10,480 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2092565379, now seen corresponding path program 1 times [2022-04-06 18:52:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225853920] [2022-04-06 18:52:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-04-06 18:52:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:10,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225853920] [2022-04-06 18:52:10,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225853920] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:10,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613539304] [2022-04-06 18:52:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:10,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:10,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:10,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 18:52:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:10,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 18:52:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-04-06 18:52:10,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:10,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613539304] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:10,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:10,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 11 [2022-04-06 18:52:11,040 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1191710383] [2022-04-06 18:52:11,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1191710383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:11,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:11,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 18:52:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747683453] [2022-04-06 18:52:11,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:11,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 18:52:11,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 18:52:11,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-04-06 18:52:11,042 INFO L87 Difference]: Start difference. First operand 139 states and 189 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:11,426 INFO L93 Difference]: Finished difference Result 244 states and 349 transitions. [2022-04-06 18:52:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 18:52:11,426 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-04-06 18:52:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:11,436 INFO L225 Difference]: With dead ends: 244 [2022-04-06 18:52:11,436 INFO L226 Difference]: Without dead ends: 155 [2022-04-06 18:52:11,436 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=889, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 18:52:11,437 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 289 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:11,437 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 63 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-04-06 18:52:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2022-04-06 18:52:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.356164383561644) internal successors, (198), 146 states have internal predecessors, (198), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2022-04-06 18:52:11,451 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 64 [2022-04-06 18:52:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:11,451 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2022-04-06 18:52:11,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2022-04-06 18:52:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 18:52:11,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:11,452 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:11,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-04-06 18:52:11,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 18:52:11,667 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 116169660, now seen corresponding path program 1 times [2022-04-06 18:52:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:11,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [599556864] [2022-04-06 18:52:11,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,696 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,752 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,783 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,825 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,837 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,858 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:11,860 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -47166083, now seen corresponding path program 1 times [2022-04-06 18:52:11,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:11,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682645082] [2022-04-06 18:52:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-04-06 18:52:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682645082] [2022-04-06 18:52:11,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682645082] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908733536] [2022-04-06 18:52:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:11,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:11,924 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:11,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 18:52:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:11,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:11,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-04-06 18:52:12,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-04-06 18:52:12,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908733536] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:12,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:12,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-04-06 18:52:12,441 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:12,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [599556864] [2022-04-06 18:52:12,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [599556864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:12,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:12,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 18:52:12,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866109663] [2022-04-06 18:52:12,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:12,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 18:52:12,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:12,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 18:52:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-04-06 18:52:12,442 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:12,905 INFO L93 Difference]: Finished difference Result 253 states and 358 transitions. [2022-04-06 18:52:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 18:52:12,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-04-06 18:52:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:12,906 INFO L225 Difference]: With dead ends: 253 [2022-04-06 18:52:12,906 INFO L226 Difference]: Without dead ends: 164 [2022-04-06 18:52:12,906 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 18:52:12,907 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 270 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:12,907 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 104 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-06 18:52:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2022-04-06 18:52:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 147 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2022-04-06 18:52:12,921 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 65 [2022-04-06 18:52:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:12,922 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2022-04-06 18:52:12,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2022-04-06 18:52:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 18:52:12,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:12,926 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:12,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:13,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-06 18:52:13,139 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:13,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1077150687, now seen corresponding path program 1 times [2022-04-06 18:52:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:13,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1353788067] [2022-04-06 18:52:13,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,161 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,174 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,200 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,204 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,207 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,253 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,302 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:13,302 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1998233213, now seen corresponding path program 1 times [2022-04-06 18:52:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:13,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725959783] [2022-04-06 18:52:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:13,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-04-06 18:52:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725959783] [2022-04-06 18:52:13,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725959783] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141816432] [2022-04-06 18:52:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:13,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:13,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 18:52:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:13,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:13,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-04-06 18:52:13,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:13,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141816432] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:13,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:13,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-04-06 18:52:13,837 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:13,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1353788067] [2022-04-06 18:52:13,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1353788067] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:13,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:13,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 18:52:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787098815] [2022-04-06 18:52:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:13,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 18:52:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 18:52:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-04-06 18:52:13,839 INFO L87 Difference]: Start difference. First operand 151 states and 203 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:14,312 INFO L93 Difference]: Finished difference Result 261 states and 366 transitions. [2022-04-06 18:52:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 18:52:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-04-06 18:52:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:14,313 INFO L225 Difference]: With dead ends: 261 [2022-04-06 18:52:14,313 INFO L226 Difference]: Without dead ends: 164 [2022-04-06 18:52:14,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=889, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 18:52:14,314 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 261 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:14,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 111 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-06 18:52:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2022-04-06 18:52:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 147 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2022-04-06 18:52:14,327 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 65 [2022-04-06 18:52:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:14,327 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2022-04-06 18:52:14,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2022-04-06 18:52:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 18:52:14,328 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:14,328 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:14,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:14,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 18:52:14,539 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash -90453617, now seen corresponding path program 1 times [2022-04-06 18:52:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [517157058] [2022-04-06 18:52:14,549 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,559 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,571 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,587 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,603 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,624 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,625 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,636 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,648 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,650 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,672 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:14,703 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash -251334787, now seen corresponding path program 1 times [2022-04-06 18:52:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:14,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895891994] [2022-04-06 18:52:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:14,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 18:52:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:14,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895891994] [2022-04-06 18:52:14,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895891994] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:14,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649298831] [2022-04-06 18:52:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:14,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:14,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 18:52:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:14,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:14,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-04-06 18:52:14,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-04-06 18:52:15,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649298831] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:15,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:15,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-04-06 18:52:15,209 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:15,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [517157058] [2022-04-06 18:52:15,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [517157058] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:15,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:15,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 18:52:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880286351] [2022-04-06 18:52:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:15,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 18:52:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 18:52:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-04-06 18:52:15,210 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:15,657 INFO L93 Difference]: Finished difference Result 253 states and 357 transitions. [2022-04-06 18:52:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 18:52:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-04-06 18:52:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:15,658 INFO L225 Difference]: With dead ends: 253 [2022-04-06 18:52:15,659 INFO L226 Difference]: Without dead ends: 164 [2022-04-06 18:52:15,659 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 18:52:15,659 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 258 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:15,660 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 102 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-06 18:52:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2022-04-06 18:52:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 147 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2022-04-06 18:52:15,673 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 66 [2022-04-06 18:52:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:15,674 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2022-04-06 18:52:15,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2022-04-06 18:52:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 18:52:15,674 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:15,674 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:15,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:15,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 18:52:15,875 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 966719150, now seen corresponding path program 1 times [2022-04-06 18:52:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:15,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1854486757] [2022-04-06 18:52:15,886 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,911 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,925 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,938 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,952 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,990 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:15,993 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,003 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,011 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,043 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:16,057 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 484739579, now seen corresponding path program 1 times [2022-04-06 18:52:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540730895] [2022-04-06 18:52:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-04-06 18:52:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:16,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540730895] [2022-04-06 18:52:16,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540730895] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:16,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702522630] [2022-04-06 18:52:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:16,106 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:16,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 18:52:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:16,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:16,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-04-06 18:52:16,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 18:52:16,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702522630] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:16,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:16,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 10 [2022-04-06 18:52:16,582 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1854486757] [2022-04-06 18:52:16,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1854486757] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:16,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:16,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 18:52:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028334181] [2022-04-06 18:52:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:16,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 18:52:16,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 18:52:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-04-06 18:52:16,584 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:16,988 INFO L93 Difference]: Finished difference Result 260 states and 364 transitions. [2022-04-06 18:52:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 18:52:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-04-06 18:52:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:16,989 INFO L225 Difference]: With dead ends: 260 [2022-04-06 18:52:16,989 INFO L226 Difference]: Without dead ends: 171 [2022-04-06 18:52:16,991 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2022-04-06 18:52:16,992 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 286 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:16,992 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 76 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-04-06 18:52:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-04-06 18:52:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 156 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-04-06 18:52:17,011 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 70 [2022-04-06 18:52:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:17,011 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-04-06 18:52:17,011 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-04-06 18:52:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 18:52:17,011 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:17,011 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:17,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:17,223 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:17,223 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -101905450, now seen corresponding path program 1 times [2022-04-06 18:52:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [259525337] [2022-04-06 18:52:17,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,258 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,289 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,327 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,348 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,359 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,364 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,375 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:17,399 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -824391173, now seen corresponding path program 1 times [2022-04-06 18:52:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847244480] [2022-04-06 18:52:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-04-06 18:52:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:17,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847244480] [2022-04-06 18:52:17,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847244480] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:17,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706028623] [2022-04-06 18:52:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:17,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:17,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 18:52:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:17,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:17,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-06 18:52:17,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 18:52:17,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706028623] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:17,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:17,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-04-06 18:52:17,911 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:17,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [259525337] [2022-04-06 18:52:17,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [259525337] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:17,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:17,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 18:52:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780086371] [2022-04-06 18:52:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:17,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 18:52:17,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:17,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 18:52:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-04-06 18:52:17,913 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:18,395 INFO L93 Difference]: Finished difference Result 270 states and 374 transitions. [2022-04-06 18:52:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 18:52:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-04-06 18:52:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:18,396 INFO L225 Difference]: With dead ends: 270 [2022-04-06 18:52:18,396 INFO L226 Difference]: Without dead ends: 181 [2022-04-06 18:52:18,397 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2022-04-06 18:52:18,397 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 268 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:18,397 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 78 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-04-06 18:52:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 160. [2022-04-06 18:52:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 156 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-04-06 18:52:18,412 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 72 [2022-04-06 18:52:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:18,412 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-04-06 18:52:18,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-04-06 18:52:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 18:52:18,413 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:18,413 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:18,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:18,613 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 18:52:18,614 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 877133450, now seen corresponding path program 1 times [2022-04-06 18:52:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:18,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1257991049] [2022-04-06 18:52:18,625 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,706 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,751 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,774 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:18,832 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 18:52:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2133521925, now seen corresponding path program 1 times [2022-04-06 18:52:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 18:52:18,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296993109] [2022-04-06 18:52:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:18,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 18:52:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 18:52:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-04-06 18:52:18,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 18:52:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296993109] [2022-04-06 18:52:18,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296993109] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 18:52:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493439402] [2022-04-06 18:52:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 18:52:18,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 18:52:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 18:52:18,896 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 18:52:18,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 18:52:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 18:52:18,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 18:52:18,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 18:52:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-04-06 18:52:19,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 18:52:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-04-06 18:52:19,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493439402] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 18:52:19,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 18:52:19,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-04-06 18:52:19,434 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 18:52:19,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1257991049] [2022-04-06 18:52:19,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1257991049] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 18:52:19,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 18:52:19,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 18:52:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957450514] [2022-04-06 18:52:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 18:52:19,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 18:52:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 18:52:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-04-06 18:52:19,436 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 18:52:19,933 INFO L93 Difference]: Finished difference Result 263 states and 367 transitions. [2022-04-06 18:52:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 18:52:19,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-04-06 18:52:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 18:52:19,934 INFO L225 Difference]: With dead ends: 263 [2022-04-06 18:52:19,934 INFO L226 Difference]: Without dead ends: 174 [2022-04-06 18:52:19,935 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 18:52:19,935 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 275 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 18:52:19,936 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 96 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 18:52:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-04-06 18:52:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 152. [2022-04-06 18:52:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 148 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2022-04-06 18:52:19,950 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 73 [2022-04-06 18:52:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 18:52:19,950 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2022-04-06 18:52:19,950 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 18:52:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2022-04-06 18:52:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 18:52:19,951 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 18:52:19,951 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 18:52:19,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 18:52:20,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-06 18:52:20,168 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 18:52:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 18:52:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 417569210, now seen corresponding path program 1 times [2022-04-06 18:52:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 18:52:20,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [169224627] [2022-04-06 18:52:20,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,191 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,205 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,225 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,276 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,288 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,292 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,307 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,329 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,349 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,375 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 18:52:20,375 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:401) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.makeReflexive(PredicateHelper.java:222) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:253) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-06 18:52:20,378 INFO L158 Benchmark]: Toolchain (without parser) took 22221.56ms. Allocated memory was 175.1MB in the beginning and 307.2MB in the end (delta: 132.1MB). Free memory was 126.1MB in the beginning and 135.4MB in the end (delta: -9.3MB). Peak memory consumption was 124.3MB. Max. memory is 8.0GB. [2022-04-06 18:52:20,378 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 175.1MB. Free memory was 142.4MB in the beginning and 142.3MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 18:52:20,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.48ms. Allocated memory is still 175.1MB. Free memory was 125.9MB in the beginning and 151.0MB in the end (delta: -25.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 18:52:20,379 INFO L158 Benchmark]: Boogie Preprocessor took 26.11ms. Allocated memory is still 175.1MB. Free memory was 151.0MB in the beginning and 149.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 18:52:20,379 INFO L158 Benchmark]: RCFGBuilder took 277.36ms. Allocated memory is still 175.1MB. Free memory was 149.2MB in the beginning and 136.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 18:52:20,379 INFO L158 Benchmark]: TraceAbstraction took 21728.08ms. Allocated memory was 175.1MB in the beginning and 307.2MB in the end (delta: 132.1MB). Free memory was 135.5MB in the beginning and 135.4MB in the end (delta: 108.9kB). Peak memory consumption was 133.3MB. Max. memory is 8.0GB. [2022-04-06 18:52:20,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 175.1MB. Free memory was 142.4MB in the beginning and 142.3MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.48ms. Allocated memory is still 175.1MB. Free memory was 125.9MB in the beginning and 151.0MB in the end (delta: -25.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.11ms. Allocated memory is still 175.1MB. Free memory was 151.0MB in the beginning and 149.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 277.36ms. Allocated memory is still 175.1MB. Free memory was 149.2MB in the beginning and 136.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 21728.08ms. Allocated memory was 175.1MB in the beginning and 307.2MB in the end (delta: 132.1MB). Free memory was 135.5MB in the beginning and 135.4MB in the end (delta: 108.9kB). Peak memory consumption was 133.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-06 18:52:20,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...