/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:17:15,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:17:15,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:17:15,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 04:17:15,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:17:15,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:17:15,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:17:15,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:17:15,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:17:15,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:17:15,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:17:15,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:17:15,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:17:15,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:17:15,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:17:15,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:17:15,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:17:15,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:17:15,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:17:15,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:17:15,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:17:15,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:17:15,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:17:15,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:17:15,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:17:15,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:17:15,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:17:15,318 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:17:15,318 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:17:15,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:17:15,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:17:15,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:17:15,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:17:15,540 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:17:15,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-02-24 04:17:15,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c5c52bc/0c16277019764eadba5e300e9af25939/FLAGa1e5dba88 [2022-02-24 04:17:15,980 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:17:15,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-02-24 04:17:15,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c5c52bc/0c16277019764eadba5e300e9af25939/FLAGa1e5dba88 [2022-02-24 04:17:16,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c5c52bc/0c16277019764eadba5e300e9af25939 [2022-02-24 04:17:16,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:17:16,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:17:16,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:17:16,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:17:16,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:17:16,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc2018c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16, skipping insertion in model container [2022-02-24 04:17:16,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:17:16,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:17:16,231 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_1b.cil.c[8244,8257] [2022-02-24 04:17:16,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:17:16,241 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:17:16,256 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_1b.cil.c[8244,8257] [2022-02-24 04:17:16,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:17:16,267 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:17:16,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16 WrapperNode [2022-02-24 04:17:16,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:17:16,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:17:16,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:17:16,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:17:16,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:17:16,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:17:16,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:17:16,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:17:16,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (1/1) ... [2022-02-24 04:17:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:17:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:17:16,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 04:17:16,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 04:17:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:17:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:17:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:17:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:17:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:17:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:17:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:17:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:17:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:17:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:17:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:17:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:17:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:17:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:17:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:17:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:17:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:17:16,418 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:17:16,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:17:16,596 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:17:16,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:17:16,601 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 04:17:16,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:16 BoogieIcfgContainer [2022-02-24 04:17:16,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:17:16,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:17:16,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:17:16,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:17:16,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:17:16" (1/3) ... [2022-02-24 04:17:16,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba21cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:16, skipping insertion in model container [2022-02-24 04:17:16,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:16" (2/3) ... [2022-02-24 04:17:16,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba21cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:16, skipping insertion in model container [2022-02-24 04:17:16,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:16" (3/3) ... [2022-02-24 04:17:16,612 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-02-24 04:17:16,615 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:17:16,616 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:17:16,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:17:16,702 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:17:16,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:17:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 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) [2022-02-24 04:17:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-24 04:17:16,724 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:16,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:16,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1468663722, now seen corresponding path program 1 times [2022-02-24 04:17:16,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:16,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501252784] [2022-02-24 04:17:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:16,802 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:17:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:16,952 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:16,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501252784] [2022-02-24 04:17:16,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [501252784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:16,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:16,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 04:17:16,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194770610] [2022-02-24 04:17:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:16,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 04:17:16,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 04:17:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 04:17:16,987 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 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) [2022-02-24 04:17:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:17,110 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2022-02-24 04:17:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 04:17:17,113 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 [2022-02-24 04:17:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:17,123 INFO L225 Difference]: With dead ends: 70 [2022-02-24 04:17:17,123 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 04:17:17,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:17:17,129 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:17,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 04:17:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 04:17:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-24 04:17:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 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) [2022-02-24 04:17:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-02-24 04:17:17,167 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-02-24 04:17:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:17,168 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-02-24 04:17:17,168 INFO L471 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) [2022-02-24 04:17:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-02-24 04:17:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 04:17:17,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:17,170 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:17,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:17:17,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -968056640, now seen corresponding path program 1 times [2022-02-24 04:17:17,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:17,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857026597] [2022-02-24 04:17:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:19,508 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:19,722 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:19,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857026597] [2022-02-24 04:17:19,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857026597] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:19,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:19,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:17:19,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243415427] [2022-02-24 04:17:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:19,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:17:19,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:17:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:17:19,728 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-02-24 04:17:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:19,924 INFO L93 Difference]: Finished difference Result 90 states and 133 transitions. [2022-02-24 04:17:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 04:17:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 14 [2022-02-24 04:17:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:19,925 INFO L225 Difference]: With dead ends: 90 [2022-02-24 04:17:19,926 INFO L226 Difference]: Without dead ends: 57 [2022-02-24 04:17:19,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:17:19,927 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 92 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:19,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 39 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 04:17:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-24 04:17:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-02-24 04:17:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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) [2022-02-24 04:17:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-02-24 04:17:19,939 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 14 [2022-02-24 04:17:19,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:19,939 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-02-24 04:17:19,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-02-24 04:17:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-02-24 04:17:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-24 04:17:19,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:19,940 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:19,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:17:19,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1396926312, now seen corresponding path program 1 times [2022-02-24 04:17:19,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:19,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093417781] [2022-02-24 04:17:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:19,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:20,549 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:20,871 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:21,047 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:21,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093417781] [2022-02-24 04:17:21,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1093417781] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:21,047 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:21,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:17:21,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865898403] [2022-02-24 04:17:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:21,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:17:21,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:17:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:17:21,049 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-02-24 04:17:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:21,239 INFO L93 Difference]: Finished difference Result 97 states and 135 transitions. [2022-02-24 04:17:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 04:17:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 19 [2022-02-24 04:17:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:21,242 INFO L225 Difference]: With dead ends: 97 [2022-02-24 04:17:21,242 INFO L226 Difference]: Without dead ends: 79 [2022-02-24 04:17:21,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:17:21,244 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 105 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:21,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 34 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 04:17:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-24 04:17:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 49. [2022-02-24 04:17:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 45 states have internal predecessors, (59), 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) [2022-02-24 04:17:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2022-02-24 04:17:21,257 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 19 [2022-02-24 04:17:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:21,257 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2022-02-24 04:17:21,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-02-24 04:17:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2022-02-24 04:17:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 04:17:21,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:21,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:21,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:17:21,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1603181698, now seen corresponding path program 1 times [2022-02-24 04:17:21,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:21,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977467539] [2022-02-24 04:17:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:21,492 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:21,564 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:21,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977467539] [2022-02-24 04:17:21,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1977467539] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:21,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:21,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:17:21,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082397301] [2022-02-24 04:17:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:21,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:17:21,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:17:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:17:21,566 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-02-24 04:17:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:21,738 INFO L93 Difference]: Finished difference Result 95 states and 133 transitions. [2022-02-24 04:17:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 04:17:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 21 [2022-02-24 04:17:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:21,739 INFO L225 Difference]: With dead ends: 95 [2022-02-24 04:17:21,739 INFO L226 Difference]: Without dead ends: 75 [2022-02-24 04:17:21,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:17:21,741 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:21,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 41 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 04:17:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-24 04:17:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-02-24 04:17:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 57 states have (on average 1.280701754385965) internal successors, (73), 57 states have internal predecessors, (73), 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) [2022-02-24 04:17:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2022-02-24 04:17:21,756 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 21 [2022-02-24 04:17:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:21,756 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2022-02-24 04:17:21,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-02-24 04:17:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2022-02-24 04:17:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-24 04:17:21,757 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:21,757 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:21,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:17:21,758 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -998565592, now seen corresponding path program 1 times [2022-02-24 04:17:21,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:21,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365334045] [2022-02-24 04:17:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:22,340 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:22,718 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:22,853 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:22,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365334045] [2022-02-24 04:17:22,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [365334045] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:22,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:22,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:17:22,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289968954] [2022-02-24 04:17:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:22,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:17:22,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:17:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:17:22,858 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2022-02-24 04:17:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:23,115 INFO L93 Difference]: Finished difference Result 152 states and 211 transitions. [2022-02-24 04:17:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 04:17:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 26 [2022-02-24 04:17:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:23,119 INFO L225 Difference]: With dead ends: 152 [2022-02-24 04:17:23,119 INFO L226 Difference]: Without dead ends: 113 [2022-02-24 04:17:23,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:17:23,122 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 119 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:23,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 48 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 04:17:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-24 04:17:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2022-02-24 04:17:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 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) [2022-02-24 04:17:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2022-02-24 04:17:23,167 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 26 [2022-02-24 04:17:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:23,169 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2022-02-24 04:17:23,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2022-02-24 04:17:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2022-02-24 04:17:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 04:17:23,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:23,177 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2022-02-24 04:17:23,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:17:23,178 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1357620209, now seen corresponding path program 1 times [2022-02-24 04:17:23,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:23,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784575537] [2022-02-24 04:17:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:24,052 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:24,316 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:25,088 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-24 04:17:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:25,261 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:25,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784575537] [2022-02-24 04:17:25,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784575537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:25,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:25,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:17:25,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538737481] [2022-02-24 04:17:25,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:25,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:17:25,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:17:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:17:25,263 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-02-24 04:17:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:25,555 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2022-02-24 04:17:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 04:17:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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 37 [2022-02-24 04:17:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:25,557 INFO L225 Difference]: With dead ends: 234 [2022-02-24 04:17:25,557 INFO L226 Difference]: Without dead ends: 130 [2022-02-24 04:17:25,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:17:25,560 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:25,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 51 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 04:17:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-24 04:17:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2022-02-24 04:17:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 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) [2022-02-24 04:17:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2022-02-24 04:17:25,597 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 37 [2022-02-24 04:17:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2022-02-24 04:17:25,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-02-24 04:17:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2022-02-24 04:17:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 04:17:25,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:17:25,602 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 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] [2022-02-24 04:17:25,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:17:25,602 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:17:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:17:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1616416314, now seen corresponding path program 1 times [2022-02-24 04:17:25,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:17:25,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665355140] [2022-02-24 04:17:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:17:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:17:26,119 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Basisvector must contain only constants! [2022-02-24 04:17:26,119 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:17:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:17:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:17:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:17:26,168 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:17:26,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665355140] [2022-02-24 04:17:26,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [665355140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:17:26,168 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:17:26,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 04:17:26,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078027344] [2022-02-24 04:17:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:17:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 04:17:26,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:17:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 04:17:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 04:17:26,170 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-02-24 04:17:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:17:26,193 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2022-02-24 04:17:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 04:17:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 48 [2022-02-24 04:17:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:17:26,194 INFO L225 Difference]: With dead ends: 134 [2022-02-24 04:17:26,194 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 04:17:26,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:17:26,200 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:17:26,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 37 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 04:17:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 04:17:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 04:17:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-24 04:17:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 04:17:26,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2022-02-24 04:17:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:17:26,203 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 04:17:26,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-02-24 04:17:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 04:17:26,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 04:17:26,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:17:26,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:17:26,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 04:17:27,003 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2022-02-24 04:17:27,003 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 13) no Hoare annotation was computed. [2022-02-24 04:17:27,003 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 13) no Hoare annotation was computed. [2022-02-24 04:17:27,003 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 20 152) the Hoare annotation is: true [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L89-1(lines 65 118) the Hoare annotation is: (let ((.cse0 (= main_~s__hit~0 0))) (or (and (or (= main_~blastFlag~0 0) (= 2 main_~blastFlag~0)) .cse0) (and (not .cse0) (= 4 main_~blastFlag~0) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L81(lines 81 85) the Hoare annotation is: (and (or (= main_~blastFlag~0 0) (= 2 main_~blastFlag~0)) (= main_~s__hit~0 0)) [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L36(lines 36 139) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0)) (.cse1 (= main_~blastFlag~0 0)) (.cse2 (= main_~s__hit~0 0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or .cse1 .cse0) .cse2) (and .cse1 (= 8466 main_~s__state~0)) (and (= 3 main_~blastFlag~0) (not .cse2) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L69-1(lines 65 118) the Hoare annotation is: (let ((.cse0 (= 8466 main_~s__state~0))) (or (and .cse0 (= 2 main_~blastFlag~0)) (and (= main_~blastFlag~0 0) .cse0 (= main_~s__hit~0 0)))) [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L61(lines 61 120) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or (= main_~blastFlag~0 0) .cse0) (= main_~s__hit~0 0)))) [2022-02-24 04:17:27,004 INFO L854 garLoopResultBuilder]: At program point L57(lines 57 122) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0)) (.cse1 (= main_~s__hit~0 0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or (= main_~blastFlag~0 0) .cse0) .cse1) (and (= 3 main_~blastFlag~0) (not .cse1) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,004 INFO L861 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0)) (.cse1 (= main_~blastFlag~0 0)) (.cse2 (= main_~s__hit~0 0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or .cse1 .cse0) .cse2) (and .cse1 (= 8466 main_~s__state~0)) (and (= 3 main_~blastFlag~0) (not .cse2) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L107(lines 107 109) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0)) (.cse1 (= main_~s__hit~0 0))) (or (and .cse0 (= 8656 main_~s__state~0)) (and (= main_~blastFlag~0 0) .cse1) (and .cse0 .cse1))) [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L41(lines 41 136) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0)) (.cse1 (= main_~s__hit~0 0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or (= main_~blastFlag~0 0) .cse0) .cse1) (and (= 3 main_~blastFlag~0) (not .cse1) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L37(lines 36 139) the Hoare annotation is: (let ((.cse0 (= 8466 main_~s__state~0))) (or (and (= main_~blastFlag~0 0) .cse0) (and .cse0 (= 2 main_~blastFlag~0) (= main_~s__hit~0 0)))) [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L62(lines 61 120) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or (= main_~blastFlag~0 0) .cse0) (= main_~s__hit~0 0)))) [2022-02-24 04:17:27,005 INFO L854 garLoopResultBuilder]: At program point L58(lines 57 122) the Hoare annotation is: (let ((.cse0 (= main_~s__hit~0 0))) (or (and (or (= main_~blastFlag~0 0) (= 2 main_~blastFlag~0)) .cse0) (and (= 3 main_~blastFlag~0) (not .cse0) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,005 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 20 152) the Hoare annotation is: true [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point L42(lines 41 136) the Hoare annotation is: (and (or (= main_~blastFlag~0 0) (= 2 main_~blastFlag~0)) (= main_~s__hit~0 0)) [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point L104-1(lines 65 118) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0)) (.cse1 (= main_~s__hit~0 0))) (or (and .cse0 (= 8656 main_~s__state~0)) (and (= main_~blastFlag~0 0) .cse1) (and .cse0 .cse1))) [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point L100-1(lines 65 118) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0)) (.cse1 (= main_~s__hit~0 0))) (or (and .cse0 (= 8656 main_~s__state~0)) (and (= main_~blastFlag~0 0) .cse1) (and .cse0 .cse1))) [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) the Hoare annotation is: false [2022-02-24 04:17:27,006 INFO L854 garLoopResultBuilder]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (= 2 main_~blastFlag~0)) (.cse1 (= main_~blastFlag~0 0)) (.cse2 (= main_~s__hit~0 0))) (or (and (= 8656 main_~s__state~0) .cse0) (and (or .cse1 .cse0) .cse2) (and .cse1 (= 8466 main_~s__state~0)) (and (= 3 main_~blastFlag~0) (not .cse2) (= main_~s__state~0 8640)))) [2022-02-24 04:17:27,006 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 20 152) the Hoare annotation is: true [2022-02-24 04:17:27,006 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,007 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-24 04:17:27,007 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,007 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,007 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,007 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,007 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-24 04:17:27,010 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:17:27,011 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:17:27,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:17:27 BoogieIcfgContainer [2022-02-24 04:17:27,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:17:27,040 INFO L158 Benchmark]: Toolchain (without parser) took 11028.95ms. Allocated memory was 194.0MB in the beginning and 298.8MB in the end (delta: 104.9MB). Free memory was 138.6MB in the beginning and 175.1MB in the end (delta: -36.5MB). Peak memory consumption was 140.6MB. Max. memory is 8.0GB. [2022-02-24 04:17:27,040 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:17:27,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.29ms. Allocated memory was 194.0MB in the beginning and 248.5MB in the end (delta: 54.5MB). Free memory was 138.4MB in the beginning and 218.8MB in the end (delta: -80.4MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-02-24 04:17:27,041 INFO L158 Benchmark]: Boogie Preprocessor took 25.64ms. Allocated memory is still 248.5MB. Free memory was 218.8MB in the beginning and 217.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 04:17:27,041 INFO L158 Benchmark]: RCFGBuilder took 309.51ms. Allocated memory is still 248.5MB. Free memory was 217.6MB in the beginning and 206.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-24 04:17:27,042 INFO L158 Benchmark]: TraceAbstraction took 10433.13ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 205.6MB in the beginning and 175.1MB in the end (delta: 30.5MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. [2022-02-24 04:17:27,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.29ms. Allocated memory was 194.0MB in the beginning and 248.5MB in the end (delta: 54.5MB). Free memory was 138.4MB in the beginning and 218.8MB in the end (delta: -80.4MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.64ms. Allocated memory is still 248.5MB. Free memory was 218.8MB in the beginning and 217.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 309.51ms. Allocated memory is still 248.5MB. Free memory was 217.6MB in the beginning and 206.2MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 10433.13ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 205.6MB in the beginning and 175.1MB in the end (delta: 30.5MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 150]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 582 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 294 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1049 IncrementalHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 183 mSDtfsCounter, 1049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 112 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 29 PreInvPairs, 95 NumberOfFragments, 398 HoareAnnotationTreeSize, 29 FomulaSimplifications, 1210 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 29 FomulaSimplificationsInter, 1973 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (blastFlag == 0 || 2 == blastFlag) && s__hit == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((8656 == s__state && 2 == blastFlag) || ((blastFlag == 0 || 2 == blastFlag) && s__hit == 0)) || (blastFlag == 0 && 8466 == s__state)) || ((3 == blastFlag && !(s__hit == 0)) && s__state == 8640) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((blastFlag == 0 || 2 == blastFlag) && s__hit == 0) || ((3 == blastFlag && !(s__hit == 0)) && s__state == 8640) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: (8656 == s__state && 2 == blastFlag) || ((blastFlag == 0 || 2 == blastFlag) && s__hit == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (blastFlag == 0 && 8466 == s__state) || ((8466 == s__state && 2 == blastFlag) && s__hit == 0) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-02-24 04:17:27,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...