/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/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:27:05,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:27:05,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:27:05,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 04:27:05,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:27:05,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:27:05,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:27:05,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:27:05,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:27:05,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:27:05,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:27:05,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:27:05,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:27:05,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:27:05,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:27:05,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:27:05,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:27:05,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:27:05,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:27:05,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:27:05,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:27:05,296 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:27:05,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:27:05,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:27:05,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:27:05,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:27:05,536 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:27:05,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2022-02-15 04:27:05,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64cbaee/eba59b6ad6974b298e78805f6e394a22/FLAG82a17c038 [2022-02-15 04:27:05,899 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:27:05,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2022-02-15 04:27:05,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64cbaee/eba59b6ad6974b298e78805f6e394a22/FLAG82a17c038 [2022-02-15 04:27:06,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64cbaee/eba59b6ad6974b298e78805f6e394a22 [2022-02-15 04:27:06,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:27:06,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:27:06,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:27:06,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:27:06,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:27:06,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ec8342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06, skipping insertion in model container [2022-02-15 04:27:06,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:27:06,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:27:06,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c[2207,2220] [2022-02-15 04:27:06,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:27:06,564 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:27:06,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c[2207,2220] [2022-02-15 04:27:06,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:27:06,584 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:27:06,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06 WrapperNode [2022-02-15 04:27:06,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:27:06,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:27:06,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:27:06,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:27:06,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:27:06,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:27:06,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:27:06,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:27:06,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (1/1) ... [2022-02-15 04:27:06,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:27:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:27:06,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 04:27:06,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 04:27:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:27:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:27:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:27:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:27:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 04:27:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:27:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:27:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:27:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 04:27:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:27:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:27:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:27:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:27:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:27:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:27:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:27:06,721 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:27:06,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:27:06,883 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:27:06,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:27:06,888 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 04:27:06,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:27:06 BoogieIcfgContainer [2022-02-15 04:27:06,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:27:06,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:27:06,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:27:06,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:27:06,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:27:06" (1/3) ... [2022-02-15 04:27:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb3883d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:27:06, skipping insertion in model container [2022-02-15 04:27:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:27:06" (2/3) ... [2022-02-15 04:27:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb3883d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:27:06, skipping insertion in model container [2022-02-15 04:27:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:27:06" (3/3) ... [2022-02-15 04:27:06,896 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2022-02-15 04:27:06,905 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:27:06,905 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:27:06,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:27:06,940 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 [2022-02-15 04:27:06,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:27:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 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) [2022-02-15 04:27:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-15 04:27:06,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:06,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:06,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -663266717, now seen corresponding path program 1 times [2022-02-15 04:27:06,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:06,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997187012] [2022-02-15 04:27:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,006 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,163 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997187012] [2022-02-15 04:27:07,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [997187012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147046174] [2022-02-15 04:27:07,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,193 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 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 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-02-15 04:27:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,293 INFO L93 Difference]: Finished difference Result 58 states and 91 transitions. [2022-02-15 04:27:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2022-02-15 04:27:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,301 INFO L225 Difference]: With dead ends: 58 [2022-02-15 04:27:07,301 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 04:27:07,303 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 [2022-02-15 04:27:07,305 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 59 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:27:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 04:27:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2022-02-15 04:27:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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) [2022-02-15 04:27:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2022-02-15 04:27:07,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 16 [2022-02-15 04:27:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,330 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2022-02-15 04:27:07,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-02-15 04:27:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2022-02-15 04:27:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-15 04:27:07,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:27:07,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1472613343, now seen corresponding path program 1 times [2022-02-15 04:27:07,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122682609] [2022-02-15 04:27:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,334 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,366 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122682609] [2022-02-15 04:27:07,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122682609] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280829443] [2022-02-15 04:27:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,368 INFO L87 Difference]: Start difference. First operand 31 states and 50 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-02-15 04:27:07,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,419 INFO L93 Difference]: Finished difference Result 68 states and 113 transitions. [2022-02-15 04:27:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2022-02-15 04:27:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,420 INFO L225 Difference]: With dead ends: 68 [2022-02-15 04:27:07,421 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 04:27:07,421 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 [2022-02-15 04:27:07,422 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 04:27:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-02-15 04:27:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 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) [2022-02-15 04:27:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2022-02-15 04:27:07,430 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 16 [2022-02-15 04:27:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,430 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2022-02-15 04:27:07,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-02-15 04:27:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2022-02-15 04:27:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 04:27:07,431 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:27:07,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 913783256, now seen corresponding path program 1 times [2022-02-15 04:27:07,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396343082] [2022-02-15 04:27:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,433 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,527 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396343082] [2022-02-15 04:27:07,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1396343082] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842416552] [2022-02-15 04:27:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,529 INFO L87 Difference]: Start difference. First operand 41 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,571 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2022-02-15 04:27:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2022-02-15 04:27:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,572 INFO L225 Difference]: With dead ends: 64 [2022-02-15 04:27:07,573 INFO L226 Difference]: Without dead ends: 46 [2022-02-15 04:27:07,573 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 [2022-02-15 04:27:07,574 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-15 04:27:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-02-15 04:27:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 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) [2022-02-15 04:27:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 68 transitions. [2022-02-15 04:27:07,581 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 68 transitions. Word has length 17 [2022-02-15 04:27:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,581 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 68 transitions. [2022-02-15 04:27:07,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2022-02-15 04:27:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 04:27:07,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 04:27:07,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1593841626, now seen corresponding path program 1 times [2022-02-15 04:27:07,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851784867] [2022-02-15 04:27:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,584 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851784867] [2022-02-15 04:27:07,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1851784867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407008478] [2022-02-15 04:27:07,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,639 INFO L87 Difference]: Start difference. First operand 44 states and 68 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,691 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2022-02-15 04:27:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2022-02-15 04:27:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,692 INFO L225 Difference]: With dead ends: 112 [2022-02-15 04:27:07,693 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 04:27:07,693 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 [2022-02-15 04:27:07,694 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 78 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 49 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 04:27:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-02-15 04:27:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 71 states have internal predecessors, (114), 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) [2022-02-15 04:27:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 117 transitions. [2022-02-15 04:27:07,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 117 transitions. Word has length 17 [2022-02-15 04:27:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,705 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 117 transitions. [2022-02-15 04:27:07,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 117 transitions. [2022-02-15 04:27:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 04:27:07,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 04:27:07,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1891779044, now seen corresponding path program 1 times [2022-02-15 04:27:07,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570929771] [2022-02-15 04:27:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,709 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,737 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570929771] [2022-02-15 04:27:07,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570929771] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735404398] [2022-02-15 04:27:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,739 INFO L87 Difference]: Start difference. First operand 75 states and 117 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,784 INFO L93 Difference]: Finished difference Result 95 states and 147 transitions. [2022-02-15 04:27:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2022-02-15 04:27:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,785 INFO L225 Difference]: With dead ends: 95 [2022-02-15 04:27:07,785 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 04:27:07,786 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 [2022-02-15 04:27:07,786 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 68 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 04:27:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2022-02-15 04:27:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 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) [2022-02-15 04:27:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 115 transitions. [2022-02-15 04:27:07,799 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 115 transitions. Word has length 17 [2022-02-15 04:27:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,800 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 115 transitions. [2022-02-15 04:27:07,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-15 04:27:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 115 transitions. [2022-02-15 04:27:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 04:27:07,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 04:27:07,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2130301802, now seen corresponding path program 1 times [2022-02-15 04:27:07,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57697354] [2022-02-15 04:27:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,804 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,833 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57697354] [2022-02-15 04:27:07,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [57697354] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192459206] [2022-02-15 04:27:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,835 INFO L87 Difference]: Start difference. First operand 75 states and 115 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-02-15 04:27:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,898 INFO L93 Difference]: Finished difference Result 131 states and 203 transitions. [2022-02-15 04:27:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-02-15 04:27:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,899 INFO L225 Difference]: With dead ends: 131 [2022-02-15 04:27:07,899 INFO L226 Difference]: Without dead ends: 129 [2022-02-15 04:27:07,899 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 [2022-02-15 04:27:07,900 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-15 04:27:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2022-02-15 04:27:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.5555555555555556) internal successors, (154), 99 states have internal predecessors, (154), 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) [2022-02-15 04:27:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 157 transitions. [2022-02-15 04:27:07,915 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 157 transitions. Word has length 18 [2022-02-15 04:27:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:07,915 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 157 transitions. [2022-02-15 04:27:07,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-02-15 04:27:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 157 transitions. [2022-02-15 04:27:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 04:27:07,916 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:07,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:07,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 04:27:07,917 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1355318868, now seen corresponding path program 1 times [2022-02-15 04:27:07,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:07,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871529470] [2022-02-15 04:27:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:07,919 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:07,945 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:07,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871529470] [2022-02-15 04:27:07,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1871529470] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:07,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:07,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:07,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431738775] [2022-02-15 04:27:07,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:07,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:07,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:07,946 INFO L87 Difference]: Start difference. First operand 103 states and 157 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-02-15 04:27:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:07,995 INFO L93 Difference]: Finished difference Result 231 states and 355 transitions. [2022-02-15 04:27:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2022-02-15 04:27:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:07,996 INFO L225 Difference]: With dead ends: 231 [2022-02-15 04:27:07,996 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 04:27:07,997 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 [2022-02-15 04:27:07,997 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 61 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:07,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 59 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 04:27:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2022-02-15 04:27:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.4961832061068703) internal successors, (196), 131 states have internal predecessors, (196), 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) [2022-02-15 04:27:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 199 transitions. [2022-02-15 04:27:08,012 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 199 transitions. Word has length 18 [2022-02-15 04:27:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,013 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 199 transitions. [2022-02-15 04:27:08,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-02-15 04:27:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 199 transitions. [2022-02-15 04:27:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 04:27:08,014 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 04:27:08,014 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1614630737, now seen corresponding path program 1 times [2022-02-15 04:27:08,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188110866] [2022-02-15 04:27:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,016 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188110866] [2022-02-15 04:27:08,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [188110866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275232605] [2022-02-15 04:27:08,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,039 INFO L87 Difference]: Start difference. First operand 135 states and 199 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,098 INFO L93 Difference]: Finished difference Result 205 states and 301 transitions. [2022-02-15 04:27:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2022-02-15 04:27:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,099 INFO L225 Difference]: With dead ends: 205 [2022-02-15 04:27:08,099 INFO L226 Difference]: Without dead ends: 143 [2022-02-15 04:27:08,100 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 [2022-02-15 04:27:08,100 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 64 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 57 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-02-15 04:27:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2022-02-15 04:27:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.4598540145985401) internal successors, (200), 137 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) [2022-02-15 04:27:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 203 transitions. [2022-02-15 04:27:08,113 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 203 transitions. Word has length 19 [2022-02-15 04:27:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,113 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 203 transitions. [2022-02-15 04:27:08,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 203 transitions. [2022-02-15 04:27:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 04:27:08,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 04:27:08,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash -934572367, now seen corresponding path program 1 times [2022-02-15 04:27:08,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252509680] [2022-02-15 04:27:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,116 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,137 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252509680] [2022-02-15 04:27:08,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252509680] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061967740] [2022-02-15 04:27:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,139 INFO L87 Difference]: Start difference. First operand 141 states and 203 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,186 INFO L93 Difference]: Finished difference Result 237 states and 341 transitions. [2022-02-15 04:27:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2022-02-15 04:27:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,187 INFO L225 Difference]: With dead ends: 237 [2022-02-15 04:27:08,187 INFO L226 Difference]: Without dead ends: 235 [2022-02-15 04:27:08,187 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 [2022-02-15 04:27:08,188 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-02-15 04:27:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 201. [2022-02-15 04:27:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.4213197969543148) internal successors, (280), 197 states have internal predecessors, (280), 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) [2022-02-15 04:27:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 283 transitions. [2022-02-15 04:27:08,204 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 283 transitions. Word has length 19 [2022-02-15 04:27:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,205 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 283 transitions. [2022-02-15 04:27:08,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 283 transitions. [2022-02-15 04:27:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 04:27:08,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 04:27:08,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1743918993, now seen corresponding path program 1 times [2022-02-15 04:27:08,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101998014] [2022-02-15 04:27:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,208 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,228 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101998014] [2022-02-15 04:27:08,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [101998014] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,228 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125091781] [2022-02-15 04:27:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,229 INFO L87 Difference]: Start difference. First operand 201 states and 283 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,283 INFO L93 Difference]: Finished difference Result 445 states and 621 transitions. [2022-02-15 04:27:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2022-02-15 04:27:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,285 INFO L225 Difference]: With dead ends: 445 [2022-02-15 04:27:08,285 INFO L226 Difference]: Without dead ends: 259 [2022-02-15 04:27:08,286 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 [2022-02-15 04:27:08,286 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-15 04:27:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2022-02-15 04:27:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.3438735177865613) internal successors, (340), 253 states have internal predecessors, (340), 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) [2022-02-15 04:27:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 343 transitions. [2022-02-15 04:27:08,305 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 343 transitions. Word has length 19 [2022-02-15 04:27:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,305 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 343 transitions. [2022-02-15 04:27:08,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-02-15 04:27:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 343 transitions. [2022-02-15 04:27:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 04:27:08,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 04:27:08,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1093243721, now seen corresponding path program 1 times [2022-02-15 04:27:08,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260465] [2022-02-15 04:27:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,308 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,343 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260465] [2022-02-15 04:27:08,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1260465] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706115558] [2022-02-15 04:27:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,344 INFO L87 Difference]: Start difference. First operand 257 states and 343 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,393 INFO L93 Difference]: Finished difference Result 385 states and 509 transitions. [2022-02-15 04:27:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-02-15 04:27:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,395 INFO L225 Difference]: With dead ends: 385 [2022-02-15 04:27:08,395 INFO L226 Difference]: Without dead ends: 267 [2022-02-15 04:27:08,395 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 [2022-02-15 04:27:08,396 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-02-15 04:27:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-02-15 04:27:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.3026819923371646) internal successors, (340), 261 states have internal predecessors, (340), 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) [2022-02-15 04:27:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 343 transitions. [2022-02-15 04:27:08,415 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 343 transitions. Word has length 20 [2022-02-15 04:27:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,415 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 343 transitions. [2022-02-15 04:27:08,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 343 transitions. [2022-02-15 04:27:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 04:27:08,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 04:27:08,416 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1773302091, now seen corresponding path program 1 times [2022-02-15 04:27:08,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061309975] [2022-02-15 04:27:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,418 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,438 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061309975] [2022-02-15 04:27:08,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061309975] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812339148] [2022-02-15 04:27:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,440 INFO L87 Difference]: Start difference. First operand 265 states and 343 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,526 INFO L93 Difference]: Finished difference Result 427 states and 544 transitions. [2022-02-15 04:27:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-02-15 04:27:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,528 INFO L225 Difference]: With dead ends: 427 [2022-02-15 04:27:08,528 INFO L226 Difference]: Without dead ends: 425 [2022-02-15 04:27:08,528 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 [2022-02-15 04:27:08,528 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 43 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-15 04:27:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-02-15 04:27:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 389 states have (on average 1.2647814910025708) internal successors, (492), 389 states have internal predecessors, (492), 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) [2022-02-15 04:27:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 495 transitions. [2022-02-15 04:27:08,557 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 495 transitions. Word has length 20 [2022-02-15 04:27:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,558 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 495 transitions. [2022-02-15 04:27:08,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 495 transitions. [2022-02-15 04:27:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 04:27:08,558 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:27:08,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:08,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 04:27:08,559 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:27:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:27:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash 963955465, now seen corresponding path program 1 times [2022-02-15 04:27:08,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:27:08,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674829150] [2022-02-15 04:27:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:27:08,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:27:08,560 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:27:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:27:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:27:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:27:08,581 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:27:08,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674829150] [2022-02-15 04:27:08,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [674829150] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:27:08,581 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:27:08,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:27:08,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958958734] [2022-02-15 04:27:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:27:08,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:27:08,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:27:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:27:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:27:08,582 INFO L87 Difference]: Start difference. First operand 393 states and 495 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:27:08,647 INFO L93 Difference]: Finished difference Result 857 states and 1055 transitions. [2022-02-15 04:27:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:27:08,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2022-02-15 04:27:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:27:08,647 INFO L225 Difference]: With dead ends: 857 [2022-02-15 04:27:08,647 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 04:27:08,648 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 [2022-02-15 04:27:08,649 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:27:08,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:27:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 04:27:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 04:27:08,650 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) [2022-02-15 04:27:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 04:27:08,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-02-15 04:27:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:27:08,650 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 04:27:08,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-15 04:27:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 04:27:08,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 04:27:08,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 04:27:08,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 04:27:08,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-15 04:27:11,658 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-02-15 04:27:11,658 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-02-15 04:27:11,658 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-02-15 04:27:11,658 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,658 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|)) [2022-02-15 04:27:11,658 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 6 95) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2022-02-15 04:27:11,659 INFO L854 garLoopResultBuilder]: At program point L81(line 81) the Hoare annotation is: (let ((.cse0 (not (= main_~p4~0 0))) (.cse1 (= main_~lk4~0 1))) (or (and .cse0 .cse1 (= main_~p5~0 0)) (and (= main_~lk5~0 1) .cse0 .cse1))) [2022-02-15 04:27:11,659 INFO L854 garLoopResultBuilder]: At program point L65-1(lines 26 90) the Hoare annotation is: (let ((.cse4 (= main_~p4~0 0)) (.cse0 (= main_~lk5~0 1)) (.cse6 (= main_~p3~0 0)) (.cse5 (= main_~lk2~0 1)) (.cse1 (= main_~lk4~0 1)) (.cse2 (= main_~lk3~0 1)) (.cse7 (= main_~p5~0 0)) (.cse3 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse5) (and .cse0 .cse1 .cse3 .cse6) (and .cse4 .cse7 .cse3 .cse6) (and .cse4 .cse2 .cse7 .cse3) (and .cse1 .cse2 .cse7 .cse5) (and .cse4 .cse2 .cse7 .cse5) (and .cse4 .cse7 .cse6 .cse5) (and .cse1 .cse7 .cse3 .cse6) (and .cse0 .cse1 .cse6 .cse5) (and .cse0 .cse1 .cse2 .cse5) (and .cse1 .cse7 .cse6 .cse5) (and .cse4 .cse0 .cse3 .cse6) (and .cse4 .cse0 .cse6 .cse5) (and .cse1 .cse2 .cse7 .cse3))) [2022-02-15 04:27:11,659 INFO L861 garLoopResultBuilder]: At program point L28(lines 28 30) the Hoare annotation is: true [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (= main_~lk5~0 1) [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L70-1(lines 26 90) the Hoare annotation is: (let ((.cse5 (= main_~p3~0 0)) (.cse3 (= main_~p4~0 0)) (.cse2 (= main_~p5~0 0)) (.cse4 (= main_~lk5~0 1)) (.cse0 (= main_~lk4~0 1)) (.cse1 (= main_~lk3~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse4 .cse0 .cse5) (and .cse3 .cse2 .cse5) (and .cse0 .cse2 .cse5) (and .cse3 .cse4 .cse1) (and .cse3 .cse1 .cse2) (and .cse4 .cse0 .cse1))) [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L66(line 66) the Hoare annotation is: (let ((.cse6 (= main_~p4~0 0)) (.cse7 (= main_~lk5~0 1)) (.cse4 (= main_~p2~0 0)) (.cse5 (= main_~p3~0 0)) (.cse0 (not (= main_~p1~0 0))) (.cse1 (= main_~lk1~0 1)) (.cse2 (= main_~lk4~0 1)) (.cse9 (= main_~lk3~0 1)) (.cse3 (= main_~p5~0 0)) (.cse8 (= main_~lk2~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse0 .cse1 .cse5 .cse8) (and .cse6 .cse0 .cse1 .cse9 .cse3 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse8) (and .cse7 .cse0 .cse1 .cse2 .cse4 .cse5) (and .cse6 .cse7 .cse0 .cse1 .cse9 .cse8) (and .cse6 .cse7 .cse0 .cse1 .cse9 .cse4) (and .cse6 .cse0 .cse1 .cse3 .cse4 .cse5) (and .cse6 .cse0 .cse1 .cse9 .cse3 .cse4) (and .cse7 .cse0 .cse1 .cse2 .cse9 .cse8) (and .cse7 .cse0 .cse1 .cse2 .cse5 .cse8) (and .cse0 .cse1 .cse2 .cse9 .cse3 .cse4) (and .cse7 .cse0 .cse1 .cse2 .cse9 .cse4) (and .cse6 .cse0 .cse1 .cse3 .cse5 .cse8) (and .cse6 .cse7 .cse0 .cse1 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse9 .cse3 .cse8))) [2022-02-15 04:27:11,660 INFO L861 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2022-02-15 04:27:11,660 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 6 95) the Hoare annotation is: true [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L75-1(lines 26 90) the Hoare annotation is: (let ((.cse1 (= main_~p5~0 0)) (.cse2 (= main_~lk4~0 1)) (.cse0 (= main_~p4~0 0)) (.cse3 (= main_~lk5~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse1) (and .cse3 .cse2) (and .cse0 .cse3))) [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse2 (= main_~lk3~0 1)) (.cse4 (= main_~lk4~0 1)) (.cse5 (= main_~p5~0 0)) (.cse0 (= main_~p4~0 0)) (.cse1 (= main_~lk5~0 1)) (.cse6 (= main_~p3~0 0)) (.cse3 (= main_~lk2~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5 .cse3) (and .cse0 .cse2 .cse5 .cse3) (and .cse0 .cse5 .cse6 .cse3) (and .cse1 .cse4 .cse6 .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse3) (and .cse0 .cse1 .cse6 .cse3))) [2022-02-15 04:27:11,660 INFO L854 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) the Hoare annotation is: false [2022-02-15 04:27:11,660 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 6 95) the Hoare annotation is: true [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L59-1(lines 26 90) the Hoare annotation is: (let ((.cse9 (= main_~lk2~0 1)) (.cse4 (= main_~p3~0 0)) (.cse5 (= main_~p4~0 0)) (.cse0 (= main_~lk5~0 1)) (.cse1 (= main_~lk1~0 1)) (.cse2 (= main_~lk4~0 1)) (.cse6 (= main_~lk3~0 1)) (.cse8 (= main_~p1~0 0)) (.cse7 (= main_~p5~0 0)) (.cse3 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse2 .cse7 .cse3 .cse4) (and .cse2 .cse8 .cse7 .cse4 .cse9) (and .cse0 .cse2 .cse8 .cse3 .cse4) (and .cse5 .cse0 .cse8 .cse4 .cse9) (and .cse0 .cse2 .cse6 .cse8 .cse9) (and .cse5 .cse1 .cse7 .cse3 .cse4) (and .cse5 .cse6 .cse8 .cse7 .cse9) (and .cse0 .cse1 .cse2 .cse6 .cse3) (and .cse5 .cse0 .cse6 .cse8 .cse3) (and .cse0 .cse1 .cse2 .cse4 .cse9) (and .cse0 .cse1 .cse2 .cse6 .cse9) (and .cse5 .cse0 .cse1 .cse6 .cse9) (and .cse1 .cse2 .cse6 .cse7 .cse9) (and .cse1 .cse2 .cse7 .cse4 .cse9) (and .cse5 .cse0 .cse6 .cse8 .cse9) (and .cse0 .cse2 .cse6 .cse8 .cse3) (and .cse5 .cse0 .cse8 .cse3 .cse4) (and .cse5 .cse1 .cse7 .cse4 .cse9) (and .cse5 .cse8 .cse7 .cse3 .cse4) (and .cse2 .cse6 .cse8 .cse7 .cse9) (and .cse5 .cse0 .cse1 .cse4 .cse9) (and .cse2 .cse8 .cse7 .cse3 .cse4) (and .cse5 .cse1 .cse6 .cse7 .cse9) (and .cse1 .cse2 .cse6 .cse7 .cse3) (and .cse0 .cse2 .cse8 .cse4 .cse9) (and .cse5 .cse8 .cse7 .cse4 .cse9) (and .cse5 .cse6 .cse8 .cse7 .cse3) (and .cse5 .cse0 .cse1 .cse3 .cse4) (and .cse5 .cse0 .cse1 .cse6 .cse3) (and .cse2 .cse6 .cse8 .cse7 .cse3))) [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L55-1(lines 26 90) the Hoare annotation is: (let ((.cse5 (= main_~lk1~0 1)) (.cse0 (= main_~lk4~0 1)) (.cse1 (= main_~lk3~0 1)) (.cse3 (= main_~p2~0 0)) (.cse4 (= main_~p4~0 0)) (.cse2 (= main_~p1~0 0)) (.cse6 (= main_~p3~0 0)) (.cse7 (= main_~lk2~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse3) (and .cse5 .cse0 .cse6 .cse7) (and .cse4 .cse2 .cse3 .cse6) (and .cse4 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse6) (and .cse5 .cse0 .cse3 .cse6) (and .cse4 .cse5 .cse6 .cse7) (and .cse5 .cse0 .cse1 .cse7) (and .cse4 .cse1 .cse2 .cse7) (and .cse0 .cse1 .cse2 .cse7) (and .cse4 .cse5 .cse3 .cse6) (and .cse0 .cse2 .cse6 .cse7) (and .cse4 .cse5 .cse1 .cse7) (and .cse5 .cse0 .cse1 .cse3) (and .cse4 .cse2 .cse6 .cse7))) [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L51-1(lines 26 90) the Hoare annotation is: (let ((.cse4 (= main_~p1~0 0)) (.cse2 (= main_~p3~0 0)) (.cse5 (= main_~lk2~0 1)) (.cse0 (= main_~lk1~0 1)) (.cse3 (= main_~lk3~0 1)) (.cse1 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse4 .cse1 .cse2) (and .cse0 .cse3 .cse5) (and .cse3 .cse4 .cse1) (and .cse0 .cse2 .cse5) (and .cse4 .cse2 .cse5) (and .cse0 .cse3 .cse1))) [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L80-1(lines 26 90) the Hoare annotation is: (or (= main_~lk5~0 1) (= main_~p5~0 0)) [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L47-1(lines 26 90) the Hoare annotation is: (let ((.cse0 (= main_~lk1~0 1)) (.cse3 (= main_~p2~0 0)) (.cse2 (= main_~p1~0 0)) (.cse1 (= main_~lk2~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse0 .cse3) (and .cse2 .cse1))) [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse1 (= main_~p4~0 0)) (.cse2 (= main_~lk5~0 1)) (.cse0 (not (= main_~p3~0 0))) (.cse5 (= main_~lk4~0 1)) (.cse3 (= main_~lk3~0 1)) (.cse4 (= main_~p5~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse3 .cse4) (and .cse0 .cse2 .cse5 .cse3) (and .cse0 .cse5 .cse3 .cse4))) [2022-02-15 04:27:11,661 INFO L861 garLoopResultBuilder]: At program point L43(lines 43 45) the Hoare annotation is: true [2022-02-15 04:27:11,661 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 26 90) the Hoare annotation is: (or (= main_~lk1~0 1) (= main_~p1~0 0)) [2022-02-15 04:27:11,663 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:27:11,664 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 04:27:11,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 04:27:11 BoogieIcfgContainer [2022-02-15 04:27:11,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 04:27:11,671 INFO L158 Benchmark]: Toolchain (without parser) took 5320.80ms. Allocated memory was 224.4MB in the beginning and 346.0MB in the end (delta: 121.6MB). Free memory was 174.4MB in the beginning and 143.4MB in the end (delta: 31.0MB). Peak memory consumption was 177.8MB. Max. memory is 8.0GB. [2022-02-15 04:27:11,672 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 04:27:11,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.74ms. Allocated memory is still 224.4MB. Free memory was 174.3MB in the beginning and 199.5MB in the end (delta: -25.2MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2022-02-15 04:27:11,672 INFO L158 Benchmark]: Boogie Preprocessor took 17.71ms. Allocated memory is still 224.4MB. Free memory was 199.5MB in the beginning and 197.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 04:27:11,672 INFO L158 Benchmark]: RCFGBuilder took 286.01ms. Allocated memory is still 224.4MB. Free memory was 197.8MB in the beginning and 187.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 04:27:11,672 INFO L158 Benchmark]: TraceAbstraction took 4780.49ms. Allocated memory was 224.4MB in the beginning and 346.0MB in the end (delta: 121.6MB). Free memory was 186.9MB in the beginning and 143.4MB in the end (delta: 43.5MB). Peak memory consumption was 190.1MB. Max. memory is 8.0GB. [2022-02-15 04:27:11,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.74ms. Allocated memory is still 224.4MB. Free memory was 174.3MB in the beginning and 199.5MB in the end (delta: -25.2MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.71ms. Allocated memory is still 224.4MB. Free memory was 199.5MB in the beginning and 197.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 286.01ms. Allocated memory is still 224.4MB. Free memory was 197.8MB in the beginning and 187.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4780.49ms. Allocated memory was 224.4MB in the beginning and 346.0MB in the end (delta: 121.6MB). Free memory was 186.9MB in the beginning and 143.4MB in the end (delta: 43.5MB). Peak memory consumption was 190.1MB. 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: 93]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 831 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 831 mSDsluCounter, 721 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 429 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 628 mSDtfsCounter, 429 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=12, 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 30 PreInvPairs, 519 NumberOfFragments, 1696 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 30 FomulaSimplificationsInter, 9655 FormulaSimplificationTreeSizeReductionInter, 2.2s 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: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-02-15 04:27:11,695 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...