/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:44:52,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:44:52,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:44:52,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:44:52,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:44:52,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:44:52,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:44:52,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:44:52,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:44:52,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:44:52,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:44:52,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:44:52,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:44:52,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:44:52,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:44:52,890 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:44:53,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:44:53,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:44:53,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:44:53,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:44:53,117 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:44:53,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_5.c [2022-01-31 21:44:53,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb95d576/0eb1a0dc0c884e09a3424af6cb5665fe/FLAG5b93ba39f [2022-01-31 21:44:53,508 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:44:53,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_5.c [2022-01-31 21:44:53,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb95d576/0eb1a0dc0c884e09a3424af6cb5665fe/FLAG5b93ba39f [2022-01-31 21:44:53,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb95d576/0eb1a0dc0c884e09a3424af6cb5665fe [2022-01-31 21:44:53,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:44:53,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:44:53,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:44:53,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:44:53,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:44:53,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557dec21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53, skipping insertion in model container [2022-01-31 21:44:53,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:44:53,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:44:53,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_5.c[899,912] [2022-01-31 21:44:53,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:44:53,646 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:44:53,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_5.c[899,912] [2022-01-31 21:44:53,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:44:53,673 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:44:53,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53 WrapperNode [2022-01-31 21:44:53,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:44:53,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:44:53,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:44:53,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:44:53,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:44:53,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:44:53,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:44:53,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:44:53,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (1/1) ... [2022-01-31 21:44:53,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:44:53,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:44:53,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 21:44:53,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 21:44:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:44:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:44:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:44:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:44:53,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:44:53,819 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:44:53,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:44:53,915 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:44:53,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:44:53,919 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 21:44:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:44:53 BoogieIcfgContainer [2022-01-31 21:44:53,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:44:53,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:44:53,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:44:53,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:44:53,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:44:53" (1/3) ... [2022-01-31 21:44:53,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c50a923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:44:53, skipping insertion in model container [2022-01-31 21:44:53,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:44:53" (2/3) ... [2022-01-31 21:44:53,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c50a923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:44:53, skipping insertion in model container [2022-01-31 21:44:53,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:44:53" (3/3) ... [2022-01-31 21:44:53,938 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_5.c [2022-01-31 21:44:53,948 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:44:53,948 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:44:53,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:44:53,994 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:44:53,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:44:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2022-01-31 21:44:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 21:44:54,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:54,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:54,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1327885715, now seen corresponding path program 1 times [2022-01-31 21:44:54,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:54,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329733379] [2022-01-31 21:44:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:54,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:54,069 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:44:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:54,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329733379] [2022-01-31 21:44:54,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [329733379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:54,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:54,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:44:54,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153017926] [2022-01-31 21:44:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:54,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:44:54,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:44:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:44:54,199 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:54,237 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2022-01-31 21:44:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:44:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-01-31 21:44:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:54,252 INFO L225 Difference]: With dead ends: 42 [2022-01-31 21:44:54,252 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 21:44:54,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:44:54,257 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:54,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:44:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 21:44:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-31 21:44:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-01-31 21:44:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-31 21:44:54,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-01-31 21:44:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:54,285 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-31 21:44:54,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-31 21:44:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 21:44:54,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:54,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:44:54,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1327937609, now seen corresponding path program 1 times [2022-01-31 21:44:54,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7943577] [2022-01-31 21:44:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:54,289 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:44:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:54,370 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:54,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7943577] [2022-01-31 21:44:54,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [7943577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:54,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:54,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 21:44:54,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116234544] [2022-01-31 21:44:54,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:54,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 21:44:54,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 21:44:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 21:44:54,374 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:54,421 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-01-31 21:44:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 21:44:54,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-01-31 21:44:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:54,423 INFO L225 Difference]: With dead ends: 32 [2022-01-31 21:44:54,423 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 21:44:54,427 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 [2022-01-31 21:44:54,429 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:54,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:44:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 21:44:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-01-31 21:44:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-01-31 21:44:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-31 21:44:54,440 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2022-01-31 21:44:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:54,440 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-31 21:44:54,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-31 21:44:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 21:44:54,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:54,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:54,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:44:54,442 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 365342218, now seen corresponding path program 1 times [2022-01-31 21:44:54,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:54,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957216355] [2022-01-31 21:44:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:54,501 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,502 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:54,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:54,571 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:54,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957216355] [2022-01-31 21:44:54,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [957216355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:54,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:54,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 21:44:54,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721097163] [2022-01-31 21:44:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:54,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 21:44:54,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 21:44:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 21:44:54,573 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-31 21:44:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:54,638 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-01-31 21:44:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 21:44:54,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2022-01-31 21:44:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:54,639 INFO L225 Difference]: With dead ends: 50 [2022-01-31 21:44:54,639 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 21:44:54,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 21:44:54,640 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:54,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 31 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:44:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 21:44:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2022-01-31 21:44:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-01-31 21:44:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-31 21:44:54,645 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2022-01-31 21:44:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:54,645 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-31 21:44:54,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-31 21:44:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-31 21:44:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 21:44:54,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:54,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:54,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 21:44:54,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash -903990269, now seen corresponding path program 1 times [2022-01-31 21:44:54,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857327463] [2022-01-31 21:44:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:54,660 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,684 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,684 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:54,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:54,735 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:54,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857327463] [2022-01-31 21:44:54,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857327463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:54,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:54,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 21:44:54,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006116964] [2022-01-31 21:44:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:54,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 21:44:54,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 21:44:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 21:44:54,737 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-01-31 21:44:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:54,807 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2022-01-31 21:44:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 21:44:54,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2022-01-31 21:44:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:54,808 INFO L225 Difference]: With dead ends: 56 [2022-01-31 21:44:54,808 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 21:44:54,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 21:44:54,809 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 95 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:54,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 24 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:44:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 21:44:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 22. [2022-01-31 21:44:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-01-31 21:44:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-01-31 21:44:54,814 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-01-31 21:44:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:54,814 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-01-31 21:44:54,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-01-31 21:44:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-01-31 21:44:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 21:44:54,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:54,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:54,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 21:44:54,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 761147182, now seen corresponding path program 1 times [2022-01-31 21:44:54,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:54,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442643992] [2022-01-31 21:44:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:54,831 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,842 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,869 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:54,869 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:54,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:54,923 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:54,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442643992] [2022-01-31 21:44:54,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1442643992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:54,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:54,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 21:44:54,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982742634] [2022-01-31 21:44:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:54,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 21:44:54,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 21:44:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 21:44:54,924 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2022-01-31 21:44:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:55,008 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2022-01-31 21:44:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 21:44:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 [2022-01-31 21:44:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:55,009 INFO L225 Difference]: With dead ends: 60 [2022-01-31 21:44:55,009 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 21:44:55,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 21:44:55,010 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 111 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:55,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 22 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:44:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 21:44:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 23. [2022-01-31 21:44:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-01-31 21:44:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-31 21:44:55,015 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2022-01-31 21:44:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:55,015 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-31 21:44:55,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2022-01-31 21:44:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-31 21:44:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 21:44:55,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:55,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:55,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 21:44:55,017 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash 317096575, now seen corresponding path program 1 times [2022-01-31 21:44:55,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216972159] [2022-01-31 21:44:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:55,035 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,072 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,085 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,122 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,122 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:55,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:55,183 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:55,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216972159] [2022-01-31 21:44:55,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1216972159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:55,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:55,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 21:44:55,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137001363] [2022-01-31 21:44:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:55,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 21:44:55,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 21:44:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 21:44:55,185 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:55,284 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-01-31 21:44:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 21:44:55,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-01-31 21:44:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:55,285 INFO L225 Difference]: With dead ends: 62 [2022-01-31 21:44:55,285 INFO L226 Difference]: Without dead ends: 49 [2022-01-31 21:44:55,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 21:44:55,286 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:55,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 30 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-31 21:44:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2022-01-31 21:44:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-01-31 21:44:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-31 21:44:55,291 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2022-01-31 21:44:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:55,291 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-31 21:44:55,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:44:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-31 21:44:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 21:44:55,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:55,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:55,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 21:44:55,292 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash 720998685, now seen corresponding path program 1 times [2022-01-31 21:44:55,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:55,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954584725] [2022-01-31 21:44:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:55,348 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,380 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,397 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,431 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,452 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,468 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 6 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,502 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,523 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 6 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,575 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,576 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:55,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:55,645 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:55,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954584725] [2022-01-31 21:44:55,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [954584725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:55,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:55,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 21:44:55,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687998145] [2022-01-31 21:44:55,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:55,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 21:44:55,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 21:44:55,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-31 21:44:55,647 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-01-31 21:44:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:55,757 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-01-31 21:44:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 21:44:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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 23 [2022-01-31 21:44:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:55,758 INFO L225 Difference]: With dead ends: 64 [2022-01-31 21:44:55,758 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 21:44:55,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2022-01-31 21:44:55,759 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:55,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 35 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 21:44:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 26. [2022-01-31 21:44:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2022-01-31 21:44:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-31 21:44:55,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2022-01-31 21:44:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:55,765 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-31 21:44:55,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-01-31 21:44:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-31 21:44:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 21:44:55,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:55,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:55,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 21:44:55,766 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1971097541, now seen corresponding path program 2 times [2022-01-31 21:44:55,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:55,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981477523] [2022-01-31 21:44:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:55,811 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,840 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,870 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,899 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:55,933 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:55,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:56,018 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:56,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981477523] [2022-01-31 21:44:56,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981477523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:56,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:56,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 21:44:56,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934684031] [2022-01-31 21:44:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:56,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 21:44:56,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 21:44:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-31 21:44:56,020 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-01-31 21:44:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:56,161 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2022-01-31 21:44:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 21:44:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 25 [2022-01-31 21:44:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:56,162 INFO L225 Difference]: With dead ends: 66 [2022-01-31 21:44:56,162 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 21:44:56,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-01-31 21:44:56,162 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 92 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:56,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 40 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 21:44:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2022-01-31 21:44:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2022-01-31 21:44:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 21:44:56,168 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 25 [2022-01-31 21:44:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:56,168 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 21:44:56,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-01-31 21:44:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 21:44:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 21:44:56,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:56,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:56,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 21:44:56,169 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 789708761, now seen corresponding path program 3 times [2022-01-31 21:44:56,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:56,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004037555] [2022-01-31 21:44:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:56,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,259 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,300 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,342 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,383 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:56,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:56,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004037555] [2022-01-31 21:44:56,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004037555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:56,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:56,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 21:44:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365835937] [2022-01-31 21:44:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:56,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 21:44:56,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 21:44:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-31 21:44:56,476 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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) [2022-01-31 21:44:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:56,633 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2022-01-31 21:44:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 21:44:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 27 [2022-01-31 21:44:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:56,634 INFO L225 Difference]: With dead ends: 68 [2022-01-31 21:44:56,634 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 21:44:56,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-01-31 21:44:56,635 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 126 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:56,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 20 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 21:44:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2022-01-31 21:44:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2022-01-31 21:44:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 21:44:56,641 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 27 [2022-01-31 21:44:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:56,641 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 21:44:56,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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) [2022-01-31 21:44:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 21:44:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 21:44:56,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:56,642 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:56,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 21:44:56,642 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:56,642 INFO L85 PathProgramCache]: Analyzing trace with hash -365223945, now seen corresponding path program 4 times [2022-01-31 21:44:56,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:56,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43698480] [2022-01-31 21:44:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:56,697 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,737 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,778 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,818 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,850 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:56,850 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:56,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:56,973 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43698480] [2022-01-31 21:44:56,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [43698480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:56,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:56,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 21:44:56,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801946554] [2022-01-31 21:44:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:56,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 21:44:56,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 21:44:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-31 21:44:56,975 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-01-31 21:44:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:57,158 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2022-01-31 21:44:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 21:44:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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 29 [2022-01-31 21:44:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:57,159 INFO L225 Difference]: With dead ends: 70 [2022-01-31 21:44:57,159 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 21:44:57,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2022-01-31 21:44:57,160 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 122 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:57,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 35 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 21:44:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2022-01-31 21:44:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2022-01-31 21:44:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 21:44:57,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 29 [2022-01-31 21:44:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:57,166 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 21:44:57,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-01-31 21:44:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 21:44:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 21:44:57,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:57,167 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:57,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 21:44:57,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2140975253, now seen corresponding path program 5 times [2022-01-31 21:44:57,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:57,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110366625] [2022-01-31 21:44:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:57,216 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,249 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,282 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,315 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,350 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,351 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:57,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:57,496 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:57,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110366625] [2022-01-31 21:44:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [110366625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:57,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:57,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 21:44:57,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882937467] [2022-01-31 21:44:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 21:44:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 21:44:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-31 21:44:57,497 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-01-31 21:44:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:57,690 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2022-01-31 21:44:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 21:44:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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 31 [2022-01-31 21:44:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:57,691 INFO L225 Difference]: With dead ends: 72 [2022-01-31 21:44:57,691 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 21:44:57,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2022-01-31 21:44:57,692 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 126 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:57,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 25 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 21:44:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-01-31 21:44:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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) [2022-01-31 21:44:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-01-31 21:44:57,698 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 31 [2022-01-31 21:44:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:57,698 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-01-31 21:44:57,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-01-31 21:44:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-01-31 21:44:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 21:44:57,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:57,699 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:57,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 21:44:57,699 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1121751475, now seen corresponding path program 6 times [2022-01-31 21:44:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023409985] [2022-01-31 21:44:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:57,793 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,829 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,863 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,902 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:57,932 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:57,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:58,082 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:58,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023409985] [2022-01-31 21:44:58,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2023409985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:58,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:58,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 21:44:58,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468746435] [2022-01-31 21:44:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:58,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 21:44:58,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 21:44:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-31 21:44:58,084 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-01-31 21:44:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:58,313 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2022-01-31 21:44:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 21:44:58,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 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 33 [2022-01-31 21:44:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:58,314 INFO L225 Difference]: With dead ends: 72 [2022-01-31 21:44:58,314 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 21:44:58,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-01-31 21:44:58,314 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 111 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:58,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 29 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 21:44:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 38. [2022-01-31 21:44:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 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) [2022-01-31 21:44:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-31 21:44:58,322 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 33 [2022-01-31 21:44:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:58,323 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-31 21:44:58,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 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) [2022-01-31 21:44:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-31 21:44:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 21:44:58,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:58,324 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:58,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 21:44:58,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1366382042, now seen corresponding path program 7 times [2022-01-31 21:44:58,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:58,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142051187] [2022-01-31 21:44:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:58,450 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,481 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,519 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,547 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,592 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,671 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,703 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,744 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:58,744 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:58,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:58,960 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:58,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142051187] [2022-01-31 21:44:58,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1142051187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:58,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:58,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 21:44:58,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270447526] [2022-01-31 21:44:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:58,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 21:44:58,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 21:44:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-01-31 21:44:58,962 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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) [2022-01-31 21:44:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:44:59,207 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-01-31 21:44:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 21:44:59,207 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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 36 [2022-01-31 21:44:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:44:59,208 INFO L225 Difference]: With dead ends: 74 [2022-01-31 21:44:59,208 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 21:44:59,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2022-01-31 21:44:59,208 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:44:59,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 29 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:44:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 21:44:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2022-01-31 21:44:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 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) [2022-01-31 21:44:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-31 21:44:59,216 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 36 [2022-01-31 21:44:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:44:59,216 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-31 21:44:59,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 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) [2022-01-31 21:44:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-31 21:44:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 21:44:59,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:44:59,217 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:44:59,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 21:44:59,217 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:44:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:44:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -232982088, now seen corresponding path program 8 times [2022-01-31 21:44:59,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:44:59,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108052522] [2022-01-31 21:44:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:44:59,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,366 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,458 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,534 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,581 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,614 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,660 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:44:59,660 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:44:59,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:44:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:44:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:44:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:44:59,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:44:59,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108052522] [2022-01-31 21:44:59,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [108052522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:44:59,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:44:59,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 21:44:59,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971502552] [2022-01-31 21:44:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:44:59,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 21:44:59,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:44:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 21:44:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-31 21:44:59,908 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:00,219 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-01-31 21:45:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 21:45:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-01-31 21:45:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:00,220 INFO L225 Difference]: With dead ends: 76 [2022-01-31 21:45:00,220 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 21:45:00,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2022-01-31 21:45:00,221 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:00,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 44 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:45:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 21:45:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2022-01-31 21:45:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 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) [2022-01-31 21:45:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-31 21:45:00,230 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 38 [2022-01-31 21:45:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:00,230 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-31 21:45:00,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-31 21:45:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 21:45:00,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:00,231 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:00,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 21:45:00,231 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash 376380950, now seen corresponding path program 9 times [2022-01-31 21:45:00,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:00,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642574886] [2022-01-31 21:45:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:00,351 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,419 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,444 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,601 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:00,601 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:00,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:00,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:00,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642574886] [2022-01-31 21:45:00,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [642574886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:00,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:00,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 21:45:00,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645424707] [2022-01-31 21:45:00,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:00,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 21:45:00,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 21:45:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-01-31 21:45:00,849 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 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) [2022-01-31 21:45:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:01,179 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-01-31 21:45:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 21:45:01,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 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 40 [2022-01-31 21:45:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:01,181 INFO L225 Difference]: With dead ends: 78 [2022-01-31 21:45:01,181 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 21:45:01,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 21:45:01,185 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 128 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:01,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 44 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:45:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 21:45:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2022-01-31 21:45:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2022-01-31 21:45:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-01-31 21:45:01,197 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 40 [2022-01-31 21:45:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:01,198 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-01-31 21:45:01,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 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) [2022-01-31 21:45:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-01-31 21:45:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 21:45:01,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:01,199 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:01,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 21:45:01,200 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1858708212, now seen corresponding path program 10 times [2022-01-31 21:45:01,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:01,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982944536] [2022-01-31 21:45:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:01,318 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,348 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,411 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,445 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,501 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,527 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:01,563 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:01,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:01,780 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:01,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982944536] [2022-01-31 21:45:01,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [982944536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:01,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:01,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 21:45:01,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455753676] [2022-01-31 21:45:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:01,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 21:45:01,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 21:45:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-01-31 21:45:01,781 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 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) [2022-01-31 21:45:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:02,163 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2022-01-31 21:45:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 21:45:02,164 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 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 42 [2022-01-31 21:45:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:02,164 INFO L225 Difference]: With dead ends: 80 [2022-01-31 21:45:02,164 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 21:45:02,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 21:45:02,165 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:02,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 59 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 21:45:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2022-01-31 21:45:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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) [2022-01-31 21:45:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-01-31 21:45:02,175 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 42 [2022-01-31 21:45:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:02,175 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-01-31 21:45:02,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 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) [2022-01-31 21:45:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-01-31 21:45:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 21:45:02,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:02,176 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:02,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 21:45:02,176 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash 446064722, now seen corresponding path program 11 times [2022-01-31 21:45:02,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:02,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146243362] [2022-01-31 21:45:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:02,312 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,380 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,448 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,535 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,562 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,603 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:02,603 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:02,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:02,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:02,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:02,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146243362] [2022-01-31 21:45:02,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [146243362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:02,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:02,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 21:45:02,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724133289] [2022-01-31 21:45:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:02,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 21:45:02,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 21:45:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-01-31 21:45:02,882 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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) [2022-01-31 21:45:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:03,259 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2022-01-31 21:45:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 21:45:03,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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 44 [2022-01-31 21:45:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:03,260 INFO L225 Difference]: With dead ends: 82 [2022-01-31 21:45:03,260 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 21:45:03,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 21:45:03,261 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:03,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 39 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 21:45:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2022-01-31 21:45:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 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) [2022-01-31 21:45:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-31 21:45:03,272 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 44 [2022-01-31 21:45:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:03,272 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-31 21:45:03,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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) [2022-01-31 21:45:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-31 21:45:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 21:45:03,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:03,273 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:03,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 21:45:03,273 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash 105336368, now seen corresponding path program 12 times [2022-01-31 21:45:03,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:03,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081383506] [2022-01-31 21:45:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:03,381 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,429 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,449 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,476 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,497 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,528 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,550 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,594 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:03,594 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:03,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:03,823 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:03,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081383506] [2022-01-31 21:45:03,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2081383506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:03,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:03,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 21:45:03,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949254349] [2022-01-31 21:45:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:03,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 21:45:03,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 21:45:03,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-01-31 21:45:03,824 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:04,215 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2022-01-31 21:45:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 21:45:04,216 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-01-31 21:45:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:04,216 INFO L225 Difference]: With dead ends: 86 [2022-01-31 21:45:04,216 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 21:45:04,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=1206, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 21:45:04,217 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:04,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 34 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 21:45:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2022-01-31 21:45:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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) [2022-01-31 21:45:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-01-31 21:45:04,232 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 46 [2022-01-31 21:45:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:04,233 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-01-31 21:45:04,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-01-31 21:45:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 21:45:04,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:04,234 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:04,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 21:45:04,234 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash -917097330, now seen corresponding path program 13 times [2022-01-31 21:45:04,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:04,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3151156] [2022-01-31 21:45:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:04,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,416 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,477 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,542 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,569 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:04,608 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:04,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:04,931 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3151156] [2022-01-31 21:45:04,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [3151156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:04,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:04,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 21:45:04,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403211839] [2022-01-31 21:45:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:04,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 21:45:04,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 21:45:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-01-31 21:45:04,932 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 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) [2022-01-31 21:45:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:05,413 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2022-01-31 21:45:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 21:45:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-01-31 21:45:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:05,414 INFO L225 Difference]: With dead ends: 87 [2022-01-31 21:45:05,414 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 21:45:05,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 21:45:05,415 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:05,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 49 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 21:45:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2022-01-31 21:45:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 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) [2022-01-31 21:45:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-01-31 21:45:05,443 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 48 [2022-01-31 21:45:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:05,443 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-01-31 21:45:05,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 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) [2022-01-31 21:45:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-01-31 21:45:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 21:45:05,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:05,444 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:05,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 21:45:05,444 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1449132319, now seen corresponding path program 14 times [2022-01-31 21:45:05,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:05,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718509114] [2022-01-31 21:45:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:05,572 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,602 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,662 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,721 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,817 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:05,818 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:05,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:06,112 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:06,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718509114] [2022-01-31 21:45:06,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718509114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:06,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:06,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 21:45:06,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632006496] [2022-01-31 21:45:06,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:06,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 21:45:06,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 21:45:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-01-31 21:45:06,116 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 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) [2022-01-31 21:45:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:06,539 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2022-01-31 21:45:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 21:45:06,540 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 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 51 [2022-01-31 21:45:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:06,540 INFO L225 Difference]: With dead ends: 89 [2022-01-31 21:45:06,540 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 21:45:06,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=1500, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 21:45:06,541 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:06,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 39 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 21:45:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2022-01-31 21:45:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 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) [2022-01-31 21:45:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-01-31 21:45:06,574 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 51 [2022-01-31 21:45:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:06,574 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-01-31 21:45:06,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 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) [2022-01-31 21:45:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-01-31 21:45:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 21:45:06,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:06,575 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:06,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 21:45:06,575 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1980622781, now seen corresponding path program 15 times [2022-01-31 21:45:06,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:06,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184585201] [2022-01-31 21:45:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:06,707 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,731 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,763 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,787 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,820 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,845 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,878 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,903 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,942 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:06,943 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:06,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:07,287 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184585201] [2022-01-31 21:45:07,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [184585201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:07,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 21:45:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124623726] [2022-01-31 21:45:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 21:45:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 21:45:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-31 21:45:07,288 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:07,822 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2022-01-31 21:45:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 21:45:07,830 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-01-31 21:45:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:07,831 INFO L225 Difference]: With dead ends: 91 [2022-01-31 21:45:07,831 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 21:45:07,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=1659, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 21:45:07,832 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 144 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:07,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 24 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 21:45:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-01-31 21:45:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 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) [2022-01-31 21:45:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-01-31 21:45:07,848 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 53 [2022-01-31 21:45:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:07,849 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-01-31 21:45:07,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-01-31 21:45:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 21:45:07,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:07,850 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:07,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 21:45:07,850 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1641848539, now seen corresponding path program 16 times [2022-01-31 21:45:07,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:07,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074021718] [2022-01-31 21:45:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:07,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:07,999 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,046 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,140 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,204 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,267 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:08,267 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:08,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:08,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:08,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074021718] [2022-01-31 21:45:08,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1074021718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:08,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:08,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 21:45:08,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728650752] [2022-01-31 21:45:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:08,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 21:45:08,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 21:45:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-01-31 21:45:08,673 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 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) [2022-01-31 21:45:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:09,205 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2022-01-31 21:45:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 21:45:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 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 55 [2022-01-31 21:45:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:09,206 INFO L225 Difference]: With dead ends: 93 [2022-01-31 21:45:09,219 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 21:45:09,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 21:45:09,225 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 147 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:09,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 49 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:09,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 21:45:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2022-01-31 21:45:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-01-31 21:45:09,241 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 55 [2022-01-31 21:45:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:09,241 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-01-31 21:45:09,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 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) [2022-01-31 21:45:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-01-31 21:45:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 21:45:09,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:09,241 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:09,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 21:45:09,242 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1797650823, now seen corresponding path program 17 times [2022-01-31 21:45:09,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:09,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655887801] [2022-01-31 21:45:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:09,379 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,503 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,586 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,635 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:09,635 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:09,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:10,045 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655887801] [2022-01-31 21:45:10,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [655887801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:10,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:10,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 21:45:10,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474685973] [2022-01-31 21:45:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:10,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 21:45:10,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 21:45:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-01-31 21:45:10,047 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 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) [2022-01-31 21:45:10,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:10,689 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2022-01-31 21:45:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 21:45:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 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 57 [2022-01-31 21:45:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:10,690 INFO L225 Difference]: With dead ends: 95 [2022-01-31 21:45:10,690 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 21:45:10,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=2001, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 21:45:10,691 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 171 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:10,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 39 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 21:45:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 21:45:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2022-01-31 21:45:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 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) [2022-01-31 21:45:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-01-31 21:45:10,709 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2022-01-31 21:45:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:10,709 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-01-31 21:45:10,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 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) [2022-01-31 21:45:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-01-31 21:45:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 21:45:10,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:10,710 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:10,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 21:45:10,710 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash -31719785, now seen corresponding path program 18 times [2022-01-31 21:45:10,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:10,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634465125] [2022-01-31 21:45:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:10,811 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:10,831 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:10,895 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:10,920 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:10,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:10,976 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:11,007 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:11,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:11,060 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:11,060 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:11,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:11,520 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:11,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634465125] [2022-01-31 21:45:11,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1634465125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:11,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:11,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 21:45:11,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13125461] [2022-01-31 21:45:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:11,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 21:45:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 21:45:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2022-01-31 21:45:11,522 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 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) [2022-01-31 21:45:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:12,155 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-01-31 21:45:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 21:45:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 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 59 [2022-01-31 21:45:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:12,156 INFO L225 Difference]: With dead ends: 97 [2022-01-31 21:45:12,156 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 21:45:12,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=2184, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 21:45:12,157 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:12,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 34 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 21:45:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 21:45:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2022-01-31 21:45:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 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) [2022-01-31 21:45:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-01-31 21:45:12,187 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 59 [2022-01-31 21:45:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:12,187 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-01-31 21:45:12,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 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) [2022-01-31 21:45:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-01-31 21:45:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 21:45:12,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:12,187 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:12,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 21:45:12,188 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash 515925813, now seen corresponding path program 19 times [2022-01-31 21:45:12,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:12,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332782240] [2022-01-31 21:45:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:12,275 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,298 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,321 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,380 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,401 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,471 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:12,471 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:12,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:12,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:12,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332782240] [2022-01-31 21:45:12,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [332782240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:12,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 21:45:12,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408830148] [2022-01-31 21:45:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:12,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 21:45:12,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 21:45:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-01-31 21:45:12,893 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:13,599 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-01-31 21:45:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 21:45:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-01-31 21:45:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:13,599 INFO L225 Difference]: With dead ends: 101 [2022-01-31 21:45:13,599 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 21:45:13,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 21:45:13,600 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 123 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:13,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 84 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 21:45:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 21:45:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2022-01-31 21:45:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 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) [2022-01-31 21:45:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-01-31 21:45:13,623 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 61 [2022-01-31 21:45:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:13,623 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-01-31 21:45:13,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-01-31 21:45:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 21:45:13,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:13,624 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:13,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 21:45:13,624 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1477631917, now seen corresponding path program 20 times [2022-01-31 21:45:13,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399381102] [2022-01-31 21:45:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:13,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,760 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,789 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,806 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,833 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,850 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:13,930 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:13,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:14,270 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:14,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399381102] [2022-01-31 21:45:14,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1399381102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:14,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:14,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 21:45:14,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527884963] [2022-01-31 21:45:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:14,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 21:45:14,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 21:45:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2022-01-31 21:45:14,272 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:14,761 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2022-01-31 21:45:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 21:45:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-01-31 21:45:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:14,762 INFO L225 Difference]: With dead ends: 102 [2022-01-31 21:45:14,762 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 21:45:14,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=2574, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 21:45:14,763 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:14,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 34 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 21:45:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 68. [2022-01-31 21:45:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-01-31 21:45:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-01-31 21:45:14,785 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 63 [2022-01-31 21:45:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:14,785 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-01-31 21:45:14,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-01-31 21:45:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 21:45:14,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:14,786 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:14,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 21:45:14,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1396097850, now seen corresponding path program 21 times [2022-01-31 21:45:14,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:14,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587428939] [2022-01-31 21:45:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:14,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:14,902 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:14,961 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:14,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,023 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,046 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,109 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:15,157 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:15,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:15,629 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587428939] [2022-01-31 21:45:15,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1587428939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:15,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:15,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 21:45:15,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543818834] [2022-01-31 21:45:15,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:15,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 21:45:15,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 21:45:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-01-31 21:45:15,630 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:16,151 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2022-01-31 21:45:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 21:45:16,151 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-01-31 21:45:16,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:16,152 INFO L225 Difference]: With dead ends: 104 [2022-01-31 21:45:16,152 INFO L226 Difference]: Without dead ends: 91 [2022-01-31 21:45:16,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 27 SyntacticMatches, 12 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=2781, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 21:45:16,153 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:16,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 84 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 21:45:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-31 21:45:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2022-01-31 21:45:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 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) [2022-01-31 21:45:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-01-31 21:45:16,176 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 66 [2022-01-31 21:45:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:16,176 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-01-31 21:45:16,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-01-31 21:45:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 21:45:16,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:16,176 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:16,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 21:45:16,176 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1740861672, now seen corresponding path program 22 times [2022-01-31 21:45:16,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:16,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534129584] [2022-01-31 21:45:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:16,251 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,267 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,307 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,331 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,371 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,405 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,431 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,472 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:16,472 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:16,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:17,205 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534129584] [2022-01-31 21:45:17,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [534129584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:17,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:17,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 21:45:17,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587544141] [2022-01-31 21:45:17,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 21:45:17,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:17,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 21:45:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2022-01-31 21:45:17,208 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 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) [2022-01-31 21:45:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:18,100 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2022-01-31 21:45:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 21:45:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 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 68 [2022-01-31 21:45:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:18,100 INFO L225 Difference]: With dead ends: 106 [2022-01-31 21:45:18,100 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 21:45:18,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=426, Invalid=2996, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 21:45:18,101 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:18,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 34 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 21:45:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2022-01-31 21:45:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 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) [2022-01-31 21:45:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-01-31 21:45:18,126 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 68 [2022-01-31 21:45:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:18,126 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-01-31 21:45:18,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 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) [2022-01-31 21:45:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-01-31 21:45:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 21:45:18,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:18,126 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:18,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 21:45:18,127 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:18,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1291920522, now seen corresponding path program 23 times [2022-01-31 21:45:18,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:18,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762103572] [2022-01-31 21:45:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:18,218 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,238 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,264 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,309 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,327 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,351 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,369 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,399 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:18,399 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:18,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:18,830 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:18,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762103572] [2022-01-31 21:45:18,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [762103572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:18,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:18,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 21:45:18,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818947784] [2022-01-31 21:45:18,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:18,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 21:45:18,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 21:45:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2022-01-31 21:45:18,832 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:19,832 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2022-01-31 21:45:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 21:45:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-01-31 21:45:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:19,833 INFO L225 Difference]: With dead ends: 108 [2022-01-31 21:45:19,833 INFO L226 Difference]: Without dead ends: 95 [2022-01-31 21:45:19,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 30 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=441, Invalid=3219, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 21:45:19,834 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 161 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:19,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 84 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 21:45:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-31 21:45:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2022-01-31 21:45:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 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) [2022-01-31 21:45:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-01-31 21:45:19,861 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 70 [2022-01-31 21:45:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:19,861 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-01-31 21:45:19,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-01-31 21:45:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 21:45:19,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:19,862 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:19,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 21:45:19,862 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 643795028, now seen corresponding path program 24 times [2022-01-31 21:45:19,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:19,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797621243] [2022-01-31 21:45:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:19,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:19,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,009 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,047 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,075 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,095 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,170 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:20,170 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:20,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:20,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:20,856 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797621243] [2022-01-31 21:45:20,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797621243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:20,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:20,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 21:45:20,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287415200] [2022-01-31 21:45:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 21:45:20,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 21:45:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 21:45:20,858 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:21,878 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2022-01-31 21:45:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 21:45:21,879 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-01-31 21:45:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:21,879 INFO L225 Difference]: With dead ends: 110 [2022-01-31 21:45:21,879 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 21:45:21,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 13 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=456, Invalid=3450, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 21:45:21,881 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:21,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 69 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 21:45:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 21:45:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2022-01-31 21:45:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 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) [2022-01-31 21:45:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-01-31 21:45:21,915 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 72 [2022-01-31 21:45:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:21,915 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-01-31 21:45:21,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:45:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-01-31 21:45:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 21:45:21,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:21,915 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:21,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 21:45:21,915 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1145599410, now seen corresponding path program 25 times [2022-01-31 21:45:21,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705477448] [2022-01-31 21:45:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:22,042 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,069 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,103 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,130 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,192 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,226 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,254 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:22,293 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:22,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:22,889 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:22,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705477448] [2022-01-31 21:45:22,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [705477448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:22,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:22,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 21:45:22,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541170525] [2022-01-31 21:45:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:22,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 21:45:22,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:22,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 21:45:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 21:45:22,891 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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) [2022-01-31 21:45:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:23,623 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-01-31 21:45:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 21:45:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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 74 [2022-01-31 21:45:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:23,624 INFO L225 Difference]: With dead ends: 112 [2022-01-31 21:45:23,624 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 21:45:23,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 31 SyntacticMatches, 12 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=471, Invalid=3689, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 21:45:23,625 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 219 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:23,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 34 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 21:45:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2022-01-31 21:45:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 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) [2022-01-31 21:45:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-01-31 21:45:23,653 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 74 [2022-01-31 21:45:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:23,654 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-01-31 21:45:23,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 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) [2022-01-31 21:45:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-01-31 21:45:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 21:45:23,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:23,656 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:23,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 21:45:23,656 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1951693936, now seen corresponding path program 26 times [2022-01-31 21:45:23,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:23,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923038689] [2022-01-31 21:45:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:23,783 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,846 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,874 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,909 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,937 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,972 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:23,993 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:24,028 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:24,030 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:24,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:24,495 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:24,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923038689] [2022-01-31 21:45:24,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923038689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:24,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:24,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 21:45:24,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134465701] [2022-01-31 21:45:24,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:24,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 21:45:24,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:24,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 21:45:24,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 21:45:24,496 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 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) [2022-01-31 21:45:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:25,207 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2022-01-31 21:45:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 21:45:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 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 76 [2022-01-31 21:45:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:25,208 INFO L225 Difference]: With dead ends: 116 [2022-01-31 21:45:25,208 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 21:45:25,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=486, Invalid=3936, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 21:45:25,209 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 146 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:25,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 34 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 21:45:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 21:45:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2022-01-31 21:45:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 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) [2022-01-31 21:45:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-01-31 21:45:25,241 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 76 [2022-01-31 21:45:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:25,241 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-01-31 21:45:25,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 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) [2022-01-31 21:45:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-01-31 21:45:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 21:45:25,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:25,241 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:25,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 21:45:25,241 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2038263314, now seen corresponding path program 27 times [2022-01-31 21:45:25,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:25,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427471406] [2022-01-31 21:45:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:25,327 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,370 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,387 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,438 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,466 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,511 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:25,512 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:25,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:26,080 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:26,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427471406] [2022-01-31 21:45:26,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1427471406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:26,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:26,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 21:45:26,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218596643] [2022-01-31 21:45:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:26,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 21:45:26,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 21:45:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 21:45:26,082 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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) [2022-01-31 21:45:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:26,989 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2022-01-31 21:45:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 21:45:26,989 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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 78 [2022-01-31 21:45:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:26,990 INFO L225 Difference]: With dead ends: 117 [2022-01-31 21:45:26,990 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 21:45:26,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 26 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=501, Invalid=4191, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 21:45:26,991 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 136 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:26,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 114 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 21:45:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2022-01-31 21:45:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 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) [2022-01-31 21:45:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-01-31 21:45:27,034 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 78 [2022-01-31 21:45:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:27,034 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-01-31 21:45:27,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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) [2022-01-31 21:45:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-01-31 21:45:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 21:45:27,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:27,035 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:27,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 21:45:27,036 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1541003329, now seen corresponding path program 28 times [2022-01-31 21:45:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382217517] [2022-01-31 21:45:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:27,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,184 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,217 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,245 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,279 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,305 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,365 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,403 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:27,404 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:27,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:27,988 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:27,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382217517] [2022-01-31 21:45:27,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1382217517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:27,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:27,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 21:45:27,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747018331] [2022-01-31 21:45:27,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:27,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 21:45:27,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:27,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 21:45:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 21:45:27,989 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 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) [2022-01-31 21:45:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:28,786 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2022-01-31 21:45:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 21:45:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 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 81 [2022-01-31 21:45:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:28,787 INFO L225 Difference]: With dead ends: 119 [2022-01-31 21:45:28,787 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 21:45:28,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 14 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=516, Invalid=4454, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 21:45:28,788 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 157 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:28,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 44 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 21:45:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2022-01-31 21:45:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 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) [2022-01-31 21:45:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-01-31 21:45:28,824 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 81 [2022-01-31 21:45:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:28,824 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-01-31 21:45:28,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 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) [2022-01-31 21:45:28,824 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-01-31 21:45:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 21:45:28,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:28,825 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:28,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 21:45:28,825 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1793386077, now seen corresponding path program 29 times [2022-01-31 21:45:28,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:28,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535613282] [2022-01-31 21:45:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:28,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:28,945 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:28,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:28,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,015 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,031 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,054 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,070 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,119 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:29,119 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:29,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:29,854 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:29,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535613282] [2022-01-31 21:45:29,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1535613282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:29,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:29,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 21:45:29,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647676058] [2022-01-31 21:45:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:29,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 21:45:29,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 21:45:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 21:45:29,855 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 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) [2022-01-31 21:45:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:30,858 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2022-01-31 21:45:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 21:45:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 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 83 [2022-01-31 21:45:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:30,859 INFO L225 Difference]: With dead ends: 121 [2022-01-31 21:45:30,859 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 21:45:30,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 31 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=531, Invalid=4725, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 21:45:30,860 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:30,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 109 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 21:45:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 21:45:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2022-01-31 21:45:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 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) [2022-01-31 21:45:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-01-31 21:45:30,901 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 83 [2022-01-31 21:45:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:30,901 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-01-31 21:45:30,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 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) [2022-01-31 21:45:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-01-31 21:45:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 21:45:30,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:30,902 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:30,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 21:45:30,902 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2096002427, now seen corresponding path program 30 times [2022-01-31 21:45:30,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:30,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874003479] [2022-01-31 21:45:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:31,031 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,063 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,105 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,132 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,172 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,198 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,238 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,263 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,314 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:31,314 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:31,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:32,061 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:32,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874003479] [2022-01-31 21:45:32,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [874003479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:32,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:32,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 21:45:32,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262931471] [2022-01-31 21:45:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:32,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 21:45:32,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 21:45:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 21:45:32,063 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 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) [2022-01-31 21:45:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:32,997 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2022-01-31 21:45:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 21:45:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 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 85 [2022-01-31 21:45:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:32,997 INFO L225 Difference]: With dead ends: 123 [2022-01-31 21:45:32,997 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 21:45:32,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 20 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=546, Invalid=5004, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 21:45:32,998 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:32,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 24 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 21:45:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2022-01-31 21:45:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 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) [2022-01-31 21:45:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2022-01-31 21:45:33,050 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 85 [2022-01-31 21:45:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:33,051 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2022-01-31 21:45:33,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 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) [2022-01-31 21:45:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2022-01-31 21:45:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 21:45:33,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:33,051 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:33,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 21:45:33,051 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 852538649, now seen corresponding path program 31 times [2022-01-31 21:45:33,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:33,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108511970] [2022-01-31 21:45:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:33,175 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,193 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,215 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,231 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,253 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,270 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,291 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,308 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,341 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:33,341 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:33,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:33,961 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108511970] [2022-01-31 21:45:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2108511970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:33,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:33,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 21:45:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294793135] [2022-01-31 21:45:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:33,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 21:45:33,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 21:45:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 21:45:33,962 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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) [2022-01-31 21:45:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:34,814 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2022-01-31 21:45:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 21:45:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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 87 [2022-01-31 21:45:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:34,814 INFO L225 Difference]: With dead ends: 125 [2022-01-31 21:45:34,814 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 21:45:34,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 34 SyntacticMatches, 16 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=5291, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 21:45:34,815 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:34,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 24 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 21:45:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 21:45:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2022-01-31 21:45:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 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) [2022-01-31 21:45:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2022-01-31 21:45:34,853 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 87 [2022-01-31 21:45:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:34,854 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2022-01-31 21:45:34,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 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) [2022-01-31 21:45:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2022-01-31 21:45:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 21:45:34,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:34,854 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:34,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 21:45:34,854 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash -115243721, now seen corresponding path program 32 times [2022-01-31 21:45:34,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:34,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454173874] [2022-01-31 21:45:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:34,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,009 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,050 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,077 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,117 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,143 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,183 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,209 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:35,259 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:35,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:36,254 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:36,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454173874] [2022-01-31 21:45:36,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [454173874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:36,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:36,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 21:45:36,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618851043] [2022-01-31 21:45:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:36,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 21:45:36,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 21:45:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 21:45:36,255 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 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) [2022-01-31 21:45:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:37,482 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2022-01-31 21:45:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 21:45:37,482 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 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 89 [2022-01-31 21:45:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:37,482 INFO L225 Difference]: With dead ends: 127 [2022-01-31 21:45:37,482 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 21:45:37,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 35 SyntacticMatches, 16 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=576, Invalid=5586, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 21:45:37,483 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 190 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:37,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 79 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 21:45:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 21:45:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 92. [2022-01-31 21:45:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 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) [2022-01-31 21:45:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2022-01-31 21:45:37,523 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 89 [2022-01-31 21:45:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2022-01-31 21:45:37,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 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) [2022-01-31 21:45:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2022-01-31 21:45:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-31 21:45:37,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:37,524 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:37,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 21:45:37,524 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1853801941, now seen corresponding path program 33 times [2022-01-31 21:45:37,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:37,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905447583] [2022-01-31 21:45:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:37,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,653 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,686 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,740 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,761 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,804 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,826 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,860 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:37,860 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:37,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:38,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:38,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905447583] [2022-01-31 21:45:38,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1905447583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:38,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:38,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 21:45:38,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609465503] [2022-01-31 21:45:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:38,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 21:45:38,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 21:45:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1523, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 21:45:38,593 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 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) [2022-01-31 21:45:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:40,174 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2022-01-31 21:45:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 21:45:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 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 91 [2022-01-31 21:45:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:40,176 INFO L225 Difference]: With dead ends: 131 [2022-01-31 21:45:40,176 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 21:45:40,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 41 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=591, Invalid=5889, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 21:45:40,178 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:40,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 44 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 21:45:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 21:45:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2022-01-31 21:45:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 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) [2022-01-31 21:45:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2022-01-31 21:45:40,227 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 91 [2022-01-31 21:45:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:40,227 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2022-01-31 21:45:40,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 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) [2022-01-31 21:45:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2022-01-31 21:45:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 21:45:40,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:40,228 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:40,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 21:45:40,228 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 26105587, now seen corresponding path program 34 times [2022-01-31 21:45:40,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:40,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401431769] [2022-01-31 21:45:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:40,370 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,433 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,459 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,513 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,562 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:40,608 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:40,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:41,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:41,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401431769] [2022-01-31 21:45:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [401431769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:41,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:41,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 21:45:41,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212770432] [2022-01-31 21:45:41,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:41,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 21:45:41,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 21:45:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 21:45:41,549 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 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) [2022-01-31 21:45:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:42,894 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2022-01-31 21:45:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 21:45:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 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 93 [2022-01-31 21:45:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:42,897 INFO L225 Difference]: With dead ends: 132 [2022-01-31 21:45:42,897 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 21:45:42,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 27 SyntacticMatches, 26 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=606, Invalid=6200, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 21:45:42,898 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 193 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:42,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 24 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 21:45:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 21:45:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-01-31 21:45:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 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) [2022-01-31 21:45:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2022-01-31 21:45:42,943 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 93 [2022-01-31 21:45:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:42,944 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2022-01-31 21:45:42,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 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) [2022-01-31 21:45:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2022-01-31 21:45:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 21:45:42,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:42,944 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:42,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 21:45:42,944 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1563785062, now seen corresponding path program 35 times [2022-01-31 21:45:42,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:42,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800633829] [2022-01-31 21:45:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:43,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,096 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,138 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,164 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,181 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,207 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,226 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,275 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:43,275 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:43,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:44,003 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:44,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800633829] [2022-01-31 21:45:44,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800633829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:44,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:44,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 21:45:44,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50710606] [2022-01-31 21:45:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:44,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 21:45:44,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 21:45:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1683, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 21:45:44,006 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 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) [2022-01-31 21:45:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:45,129 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2022-01-31 21:45:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 21:45:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 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 96 [2022-01-31 21:45:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:45,130 INFO L225 Difference]: With dead ends: 134 [2022-01-31 21:45:45,130 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 21:45:45,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 35 SyntacticMatches, 20 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=621, Invalid=6519, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 21:45:45,131 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 197 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 3158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:45,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 109 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 21:45:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 21:45:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2022-01-31 21:45:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 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) [2022-01-31 21:45:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-01-31 21:45:45,177 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 96 [2022-01-31 21:45:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:45,177 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-01-31 21:45:45,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 43 states have internal predecessors, (93), 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) [2022-01-31 21:45:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-01-31 21:45:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 21:45:45,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:45,178 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:45,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 21:45:45,178 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1374977144, now seen corresponding path program 36 times [2022-01-31 21:45:45,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:45,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854218951] [2022-01-31 21:45:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:45,316 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,361 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,403 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:45,518 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:45,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:46,743 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854218951] [2022-01-31 21:45:46,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854218951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:46,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:46,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 21:45:46,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261413781] [2022-01-31 21:45:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:46,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 21:45:46,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 21:45:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 21:45:46,744 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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) [2022-01-31 21:45:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:48,333 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2022-01-31 21:45:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 21:45:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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 98 [2022-01-31 21:45:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:48,334 INFO L225 Difference]: With dead ends: 136 [2022-01-31 21:45:48,334 INFO L226 Difference]: Without dead ends: 123 [2022-01-31 21:45:48,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 34 SyntacticMatches, 22 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=636, Invalid=6846, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 21:45:48,337 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:48,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 54 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 21:45:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-31 21:45:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2022-01-31 21:45:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 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) [2022-01-31 21:45:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2022-01-31 21:45:48,395 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 98 [2022-01-31 21:45:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2022-01-31 21:45:48,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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) [2022-01-31 21:45:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2022-01-31 21:45:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 21:45:48,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:48,396 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:48,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 21:45:48,396 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash -563023658, now seen corresponding path program 37 times [2022-01-31 21:45:48,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:48,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74392013] [2022-01-31 21:45:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:48,523 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,547 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,595 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,619 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,655 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,679 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,716 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,740 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,776 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:48,776 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:48,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:49,622 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:49,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74392013] [2022-01-31 21:45:49,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [74392013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:49,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:49,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 21:45:49,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820565338] [2022-01-31 21:45:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:49,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 21:45:49,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 21:45:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1851, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 21:45:49,626 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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) [2022-01-31 21:45:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:50,816 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2022-01-31 21:45:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 21:45:50,816 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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 100 [2022-01-31 21:45:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:50,817 INFO L225 Difference]: With dead ends: 138 [2022-01-31 21:45:50,817 INFO L226 Difference]: Without dead ends: 125 [2022-01-31 21:45:50,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 35 SyntacticMatches, 22 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=651, Invalid=7181, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 21:45:50,818 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:50,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 34 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 21:45:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-01-31 21:45:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2022-01-31 21:45:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 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) [2022-01-31 21:45:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-01-31 21:45:50,870 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 100 [2022-01-31 21:45:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:50,872 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-01-31 21:45:50,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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) [2022-01-31 21:45:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-01-31 21:45:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 21:45:50,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:50,872 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:50,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 21:45:50,873 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1034012084, now seen corresponding path program 38 times [2022-01-31 21:45:50,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:50,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280222423] [2022-01-31 21:45:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:51,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,056 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,097 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,130 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,156 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,212 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,231 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,278 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:51,278 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:51,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:52,429 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280222423] [2022-01-31 21:45:52,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [280222423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:52,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:52,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 21:45:52,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166491863] [2022-01-31 21:45:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:52,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 21:45:52,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 21:45:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 21:45:52,430 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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) [2022-01-31 21:45:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:53,853 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2022-01-31 21:45:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 21:45:53,854 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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 102 [2022-01-31 21:45:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:53,854 INFO L225 Difference]: With dead ends: 140 [2022-01-31 21:45:53,854 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 21:45:53,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 43 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=666, Invalid=7524, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 21:45:53,855 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 167 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:53,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 69 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 21:45:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 21:45:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2022-01-31 21:45:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 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) [2022-01-31 21:45:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-01-31 21:45:53,925 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 102 [2022-01-31 21:45:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:53,925 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-01-31 21:45:53,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 46 states have internal predecessors, (99), 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) [2022-01-31 21:45:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-01-31 21:45:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 21:45:53,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:53,926 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:53,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 21:45:53,927 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1812931822, now seen corresponding path program 39 times [2022-01-31 21:45:53,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:53,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070742730] [2022-01-31 21:45:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:54,020 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,040 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,066 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,084 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,110 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,128 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,154 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,171 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,204 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:54,204 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:54,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:55,433 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070742730] [2022-01-31 21:45:55,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1070742730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:55,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:55,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 21:45:55,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754092561] [2022-01-31 21:45:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:55,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 21:45:55,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 21:45:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 21:45:55,435 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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) [2022-01-31 21:45:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:45:56,960 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2022-01-31 21:45:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 21:45:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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 104 [2022-01-31 21:45:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:45:56,961 INFO L225 Difference]: With dead ends: 142 [2022-01-31 21:45:56,961 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 21:45:56,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 34 SyntacticMatches, 25 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=681, Invalid=7875, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 21:45:56,962 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 217 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:45:56,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 49 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 21:45:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 21:45:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2022-01-31 21:45:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 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) [2022-01-31 21:45:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-01-31 21:45:57,035 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 104 [2022-01-31 21:45:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:45:57,035 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-01-31 21:45:57,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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) [2022-01-31 21:45:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-01-31 21:45:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 21:45:57,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:45:57,036 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:45:57,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 21:45:57,036 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:45:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:45:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1831857936, now seen corresponding path program 40 times [2022-01-31 21:45:57,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:45:57,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067445149] [2022-01-31 21:45:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:45:57,164 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,227 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,313 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,353 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:45:57,415 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:45:57,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:45:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:45:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:45:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:45:58,587 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:45:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067445149] [2022-01-31 21:45:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2067445149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:45:58,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:45:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 21:45:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162280573] [2022-01-31 21:45:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:45:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 21:45:58,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:45:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 21:45:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2118, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 21:45:58,588 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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) [2022-01-31 21:46:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:00,036 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2022-01-31 21:46:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 21:46:00,036 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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 106 [2022-01-31 21:46:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:00,037 INFO L225 Difference]: With dead ends: 146 [2022-01-31 21:46:00,037 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 21:46:00,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 39 SyntacticMatches, 21 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=696, Invalid=8234, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 21:46:00,038 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:00,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 59 Invalid, 4168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4014 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 21:46:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 21:46:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2022-01-31 21:46:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 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) [2022-01-31 21:46:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2022-01-31 21:46:00,105 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 106 [2022-01-31 21:46:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:00,106 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2022-01-31 21:46:00,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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) [2022-01-31 21:46:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2022-01-31 21:46:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 21:46:00,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:00,106 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:00,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 21:46:00,106 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1454982990, now seen corresponding path program 41 times [2022-01-31 21:46:00,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:00,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935022208] [2022-01-31 21:46:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:00,759 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,829 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,858 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,901 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,926 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,943 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,974 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:00,974 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:00,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:01,952 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:01,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935022208] [2022-01-31 21:46:01,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935022208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:01,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:01,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 21:46:01,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924404506] [2022-01-31 21:46:01,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:01,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 21:46:01,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:01,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 21:46:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 21:46:01,953 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 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) [2022-01-31 21:46:03,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:03,402 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2022-01-31 21:46:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 21:46:03,402 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 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 108 [2022-01-31 21:46:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:03,403 INFO L225 Difference]: With dead ends: 144 [2022-01-31 21:46:03,403 INFO L226 Difference]: Without dead ends: 131 [2022-01-31 21:46:03,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 35 SyntacticMatches, 25 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=723, Invalid=8979, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 21:46:03,404 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 172 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:03,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 58 Invalid, 3946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 21:46:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-31 21:46:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2022-01-31 21:46:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:46:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2022-01-31 21:46:03,469 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 108 [2022-01-31 21:46:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:03,469 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2022-01-31 21:46:03,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 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) [2022-01-31 21:46:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2022-01-31 21:46:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 21:46:03,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:03,470 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:03,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 21:46:03,470 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1616358397, now seen corresponding path program 42 times [2022-01-31 21:46:03,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:03,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386005354] [2022-01-31 21:46:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:03,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,870 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,923 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,962 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:03,984 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:04,000 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:04,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:04,044 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:04,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:05,152 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386005354] [2022-01-31 21:46:05,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1386005354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:05,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:05,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 21:46:05,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435232219] [2022-01-31 21:46:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:05,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 21:46:05,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 21:46:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2405, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 21:46:05,154 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 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) [2022-01-31 21:46:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:06,765 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2022-01-31 21:46:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 21:46:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 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 111 [2022-01-31 21:46:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:06,766 INFO L225 Difference]: With dead ends: 145 [2022-01-31 21:46:06,766 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 21:46:06,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 19 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=735, Invalid=9365, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 21:46:06,767 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 209 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:06,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 158 Invalid, 4580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 21:46:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 21:46:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2022-01-31 21:46:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 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) [2022-01-31 21:46:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2022-01-31 21:46:06,829 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 111 [2022-01-31 21:46:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:06,830 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2022-01-31 21:46:06,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 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) [2022-01-31 21:46:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2022-01-31 21:46:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 21:46:06,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:06,830 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:06,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 21:46:06,830 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:06,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 354070922, now seen corresponding path program 43 times [2022-01-31 21:46:06,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:06,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93475760] [2022-01-31 21:46:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:07,296 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,331 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,351 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,373 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,407 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,487 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,567 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,605 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:07,605 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:07,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:09,028 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93475760] [2022-01-31 21:46:09,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [93475760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:09,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:09,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 21:46:09,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386671085] [2022-01-31 21:46:09,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:09,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 21:46:09,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 21:46:09,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 21:46:09,029 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 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) [2022-01-31 21:46:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:10,795 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2022-01-31 21:46:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 21:46:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 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 114 [2022-01-31 21:46:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:10,796 INFO L225 Difference]: With dead ends: 147 [2022-01-31 21:46:10,796 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 21:46:10,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 40 SyntacticMatches, 24 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=747, Invalid=9759, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 21:46:10,797 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4781 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:10,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 123 Invalid, 4940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4781 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 21:46:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 21:46:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2022-01-31 21:46:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 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) [2022-01-31 21:46:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-01-31 21:46:10,861 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 114 [2022-01-31 21:46:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:10,861 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-01-31 21:46:10,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 52 states have internal predecessors, (111), 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) [2022-01-31 21:46:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-01-31 21:46:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 21:46:10,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:10,861 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:10,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 21:46:10,862 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1893607784, now seen corresponding path program 44 times [2022-01-31 21:46:10,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:10,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125244949] [2022-01-31 21:46:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:11,417 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,452 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,506 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,575 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,689 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,734 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,791 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:11,792 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:11,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:12,834 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:12,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125244949] [2022-01-31 21:46:12,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [125244949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:12,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:12,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 21:46:12,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579052684] [2022-01-31 21:46:12,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:12,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 21:46:12,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:12,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 21:46:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 21:46:12,835 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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) [2022-01-31 21:46:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:14,928 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2022-01-31 21:46:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 21:46:14,928 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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 116 [2022-01-31 21:46:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:14,929 INFO L225 Difference]: With dead ends: 149 [2022-01-31 21:46:14,929 INFO L226 Difference]: Without dead ends: 136 [2022-01-31 21:46:14,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=759, Invalid=10161, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 21:46:14,930 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:14,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 28 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 21:46:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-31 21:46:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2022-01-31 21:46:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 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) [2022-01-31 21:46:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2022-01-31 21:46:15,007 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 116 [2022-01-31 21:46:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:15,007 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2022-01-31 21:46:15,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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) [2022-01-31 21:46:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2022-01-31 21:46:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 21:46:15,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:15,008 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:15,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 21:46:15,008 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash -375184954, now seen corresponding path program 45 times [2022-01-31 21:46:15,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:15,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458346100] [2022-01-31 21:46:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:15,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,622 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,649 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,676 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,697 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,837 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:15,837 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:15,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:16,804 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458346100] [2022-01-31 21:46:16,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1458346100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:16,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:16,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 21:46:16,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835975106] [2022-01-31 21:46:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:16,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 21:46:16,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 21:46:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2711, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 21:46:16,805 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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) [2022-01-31 21:46:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:18,496 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2022-01-31 21:46:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 21:46:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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 118 [2022-01-31 21:46:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:18,497 INFO L225 Difference]: With dead ends: 151 [2022-01-31 21:46:18,497 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 21:46:18,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 47 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=771, Invalid=10571, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 21:46:18,498 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 206 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 5277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:18,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 73 Invalid, 5277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 21:46:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 21:46:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2022-01-31 21:46:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:46:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2022-01-31 21:46:18,571 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 118 [2022-01-31 21:46:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:18,571 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2022-01-31 21:46:18,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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) [2022-01-31 21:46:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2022-01-31 21:46:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 21:46:18,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:18,572 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:18,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 21:46:18,572 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1158380196, now seen corresponding path program 46 times [2022-01-31 21:46:18,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:18,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018814768] [2022-01-31 21:46:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:18,998 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,020 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,049 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,071 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,170 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,197 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,227 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:19,227 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:19,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:20,385 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:20,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018814768] [2022-01-31 21:46:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2018814768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:20,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:20,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 21:46:20,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586617928] [2022-01-31 21:46:20,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:20,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 21:46:20,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 21:46:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2817, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 21:46:20,389 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 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) [2022-01-31 21:46:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:22,816 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2022-01-31 21:46:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 21:46:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 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 120 [2022-01-31 21:46:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:22,817 INFO L225 Difference]: With dead ends: 153 [2022-01-31 21:46:22,817 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 21:46:22,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 40 SyntacticMatches, 27 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=783, Invalid=10989, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 21:46:22,818 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 215 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:22,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 163 Invalid, 5472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 5307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 21:46:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 21:46:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-01-31 21:46:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 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) [2022-01-31 21:46:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2022-01-31 21:46:22,900 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 120 [2022-01-31 21:46:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:22,900 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2022-01-31 21:46:22,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 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) [2022-01-31 21:46:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2022-01-31 21:46:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 21:46:22,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:22,901 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:22,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 21:46:22,901 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1740706818, now seen corresponding path program 47 times [2022-01-31 21:46:22,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:22,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200623988] [2022-01-31 21:46:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:23,551 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,657 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,697 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,735 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,764 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,796 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,835 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:23,883 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:23,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:25,542 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:25,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200623988] [2022-01-31 21:46:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [200623988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:25,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:25,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 21:46:25,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335815262] [2022-01-31 21:46:25,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:25,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 21:46:25,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:25,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 21:46:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 21:46:25,543 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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) [2022-01-31 21:46:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:28,311 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2022-01-31 21:46:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 21:46:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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 122 [2022-01-31 21:46:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:28,312 INFO L225 Difference]: With dead ends: 155 [2022-01-31 21:46:28,312 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 21:46:28,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 45 SyntacticMatches, 23 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=795, Invalid=11415, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 21:46:28,314 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5160 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 5160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:28,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 168 Invalid, 5315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 5160 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 21:46:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 21:46:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2022-01-31 21:46:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 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) [2022-01-31 21:46:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-01-31 21:46:28,413 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 122 [2022-01-31 21:46:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:28,413 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-01-31 21:46:28,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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) [2022-01-31 21:46:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-01-31 21:46:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 21:46:28,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:28,414 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:28,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 21:46:28,414 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1284125216, now seen corresponding path program 48 times [2022-01-31 21:46:28,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:28,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990354439] [2022-01-31 21:46:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:29,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,182 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,292 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,337 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,406 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,450 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,493 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:29,493 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:29,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:31,245 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990354439] [2022-01-31 21:46:31,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [990354439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:31,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:31,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 21:46:31,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372217274] [2022-01-31 21:46:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:31,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 21:46:31,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 21:46:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=3035, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 21:46:31,247 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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) [2022-01-31 21:46:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:33,841 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-01-31 21:46:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 21:46:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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 124 [2022-01-31 21:46:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:33,844 INFO L225 Difference]: With dead ends: 159 [2022-01-31 21:46:33,844 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 21:46:33,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 41 SyntacticMatches, 28 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=807, Invalid=11849, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 21:46:33,845 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 215 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5882 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 6049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 5882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:33,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 43 Invalid, 6049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5882 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 21:46:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 21:46:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2022-01-31 21:46:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 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) [2022-01-31 21:46:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-01-31 21:46:33,935 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 124 [2022-01-31 21:46:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:33,935 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-01-31 21:46:33,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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) [2022-01-31 21:46:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-01-31 21:46:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 21:46:33,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:33,935 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:33,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 21:46:33,936 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -454850498, now seen corresponding path program 49 times [2022-01-31 21:46:33,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:33,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563347780] [2022-01-31 21:46:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:34,390 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,440 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,541 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,602 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,644 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:34,644 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:34,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:36,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:36,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563347780] [2022-01-31 21:46:36,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563347780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:36,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:36,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 21:46:36,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644600865] [2022-01-31 21:46:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:36,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 21:46:36,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 21:46:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3147, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 21:46:36,412 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 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) [2022-01-31 21:46:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:39,244 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-01-31 21:46:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 21:46:39,244 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 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 126 [2022-01-31 21:46:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:39,245 INFO L225 Difference]: With dead ends: 160 [2022-01-31 21:46:39,245 INFO L226 Difference]: Without dead ends: 147 [2022-01-31 21:46:39,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 46 SyntacticMatches, 24 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3009 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=819, Invalid=12291, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 21:46:39,246 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 168 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 5328 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 5448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 5328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:39,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 138 Invalid, 5448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 5328 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 21:46:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-31 21:46:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 131. [2022-01-31 21:46:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 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) [2022-01-31 21:46:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-01-31 21:46:39,333 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 126 [2022-01-31 21:46:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:39,333 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-01-31 21:46:39,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 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) [2022-01-31 21:46:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-01-31 21:46:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-31 21:46:39,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:39,334 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:39,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 21:46:39,334 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1715613841, now seen corresponding path program 50 times [2022-01-31 21:46:39,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523053304] [2022-01-31 21:46:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:39,829 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:39,862 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:39,903 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:39,943 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:39,975 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,018 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,067 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,103 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,196 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:40,196 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:40,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:41,962 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:41,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523053304] [2022-01-31 21:46:41,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1523053304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:41,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:41,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 21:46:41,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012782445] [2022-01-31 21:46:41,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:41,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 21:46:41,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 21:46:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=3261, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 21:46:41,964 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 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) [2022-01-31 21:46:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:44,002 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2022-01-31 21:46:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 21:46:44,002 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 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 129 [2022-01-31 21:46:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:44,003 INFO L225 Difference]: With dead ends: 162 [2022-01-31 21:46:44,003 INFO L226 Difference]: Without dead ends: 149 [2022-01-31 21:46:44,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 44 SyntacticMatches, 28 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3180 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=831, Invalid=12741, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 21:46:44,004 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 196 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:44,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 58 Invalid, 5236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5096 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 21:46:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-31 21:46:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 132. [2022-01-31 21:46:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 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) [2022-01-31 21:46:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2022-01-31 21:46:44,087 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 129 [2022-01-31 21:46:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:44,087 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2022-01-31 21:46:44,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 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) [2022-01-31 21:46:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2022-01-31 21:46:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-31 21:46:44,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:44,088 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:44,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 21:46:44,088 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1496408589, now seen corresponding path program 51 times [2022-01-31 21:46:44,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449950057] [2022-01-31 21:46:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:44,566 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,600 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,682 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,756 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,794 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,869 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,920 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:44,921 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:44,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:46,625 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:46,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449950057] [2022-01-31 21:46:46,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [449950057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:46,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:46,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 21:46:46,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526064152] [2022-01-31 21:46:46,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:46,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 21:46:46,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 21:46:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3377, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 21:46:46,626 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 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) [2022-01-31 21:46:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:48,537 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2022-01-31 21:46:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 21:46:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 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 131 [2022-01-31 21:46:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:48,537 INFO L225 Difference]: With dead ends: 164 [2022-01-31 21:46:48,538 INFO L226 Difference]: Without dead ends: 151 [2022-01-31 21:46:48,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 41 SyntacticMatches, 32 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=843, Invalid=13199, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 21:46:48,539 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 200 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:48,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 63 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 21:46:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-01-31 21:46:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 134. [2022-01-31 21:46:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 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) [2022-01-31 21:46:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2022-01-31 21:46:48,629 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 131 [2022-01-31 21:46:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:48,630 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2022-01-31 21:46:48,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 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) [2022-01-31 21:46:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2022-01-31 21:46:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-31 21:46:48,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:48,630 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:48,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 21:46:48,630 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 168477995, now seen corresponding path program 52 times [2022-01-31 21:46:48,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967402038] [2022-01-31 21:46:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:49,068 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,090 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,118 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,143 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,193 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,218 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,240 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,268 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,303 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:49,303 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:49,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:50,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:50,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967402038] [2022-01-31 21:46:50,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [967402038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:50,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:50,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 21:46:50,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697904353] [2022-01-31 21:46:50,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:50,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 21:46:50,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 21:46:50,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3495, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 21:46:50,523 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 61 states have internal predecessors, (130), 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) [2022-01-31 21:46:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:52,643 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2022-01-31 21:46:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 21:46:52,644 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 61 states have internal predecessors, (130), 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 133 [2022-01-31 21:46:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:52,644 INFO L225 Difference]: With dead ends: 166 [2022-01-31 21:46:52,644 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 21:46:52,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 47 SyntacticMatches, 27 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3543 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=855, Invalid=13665, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 21:46:52,645 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:52,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 73 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 21:46:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 21:46:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2022-01-31 21:46:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 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) [2022-01-31 21:46:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2022-01-31 21:46:52,730 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 133 [2022-01-31 21:46:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:52,730 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2022-01-31 21:46:52,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 61 states have internal predecessors, (130), 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) [2022-01-31 21:46:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2022-01-31 21:46:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-31 21:46:52,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:52,731 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:52,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 21:46:52,731 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash -367535927, now seen corresponding path program 53 times [2022-01-31 21:46:52,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:52,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299284108] [2022-01-31 21:46:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:53,156 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,204 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,234 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,255 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,282 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,309 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,331 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,358 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,409 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:53,410 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:53,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:54,600 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299284108] [2022-01-31 21:46:54,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [299284108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:54,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:54,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 21:46:54,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699092845] [2022-01-31 21:46:54,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:54,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 21:46:54,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 21:46:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3615, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 21:46:54,601 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 62 states have internal predecessors, (132), 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) [2022-01-31 21:46:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:46:57,289 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-01-31 21:46:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 21:46:57,290 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 62 states have internal predecessors, (132), 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 135 [2022-01-31 21:46:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:46:57,290 INFO L225 Difference]: With dead ends: 168 [2022-01-31 21:46:57,290 INFO L226 Difference]: Without dead ends: 155 [2022-01-31 21:46:57,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 54 SyntacticMatches, 21 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3640 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=867, Invalid=14139, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 21:46:57,291 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 230 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6471 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 6471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:46:57,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 33 Invalid, 6652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 6471 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 21:46:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-01-31 21:46:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 138. [2022-01-31 21:46:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.037313432835821) internal successors, (139), 134 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:46:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2022-01-31 21:46:57,388 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 135 [2022-01-31 21:46:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:46:57,389 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2022-01-31 21:46:57,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 62 states have internal predecessors, (132), 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) [2022-01-31 21:46:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2022-01-31 21:46:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-31 21:46:57,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:46:57,389 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:46:57,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 21:46:57,389 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:46:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:46:57,390 INFO L85 PathProgramCache]: Analyzing trace with hash -80839449, now seen corresponding path program 54 times [2022-01-31 21:46:57,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:46:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373123561] [2022-01-31 21:46:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:46:57,805 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,900 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,928 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,953 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:57,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:58,007 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:58,039 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:46:58,039 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:46:58,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:46:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:46:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:46:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:46:59,351 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:46:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373123561] [2022-01-31 21:46:59,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [373123561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:46:59,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:46:59,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 21:46:59,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329303811] [2022-01-31 21:46:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:46:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 21:46:59,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:46:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 21:46:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3737, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 21:46:59,352 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 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) [2022-01-31 21:47:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:01,547 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2022-01-31 21:47:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 21:47:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 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 137 [2022-01-31 21:47:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:01,548 INFO L225 Difference]: With dead ends: 170 [2022-01-31 21:47:01,548 INFO L226 Difference]: Without dead ends: 157 [2022-01-31 21:47:01,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 45 SyntacticMatches, 31 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=879, Invalid=14621, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 21:47:01,549 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 216 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 6762 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 6933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 6762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:01,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 143 Invalid, 6933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 21:47:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-31 21:47:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-01-31 21:47:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 1.036764705882353) internal successors, (141), 136 states have internal predecessors, (141), 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) [2022-01-31 21:47:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2022-01-31 21:47:01,638 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 137 [2022-01-31 21:47:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:01,639 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2022-01-31 21:47:01,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.09375) internal successors, (134), 63 states have internal predecessors, (134), 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) [2022-01-31 21:47:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2022-01-31 21:47:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-31 21:47:01,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:01,639 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:01,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 21:47:01,639 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash 556568965, now seen corresponding path program 55 times [2022-01-31 21:47:01,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:01,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155888744] [2022-01-31 21:47:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:02,341 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,375 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,425 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,466 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,500 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,545 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,585 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,619 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,657 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,690 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:02,690 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:02,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:04,030 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155888744] [2022-01-31 21:47:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155888744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:04,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:04,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 21:47:04,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731967286] [2022-01-31 21:47:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:04,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 21:47:04,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 21:47:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3861, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 21:47:04,032 INFO L87 Difference]: Start difference. First operand 140 states and 144 transitions. Second operand has 65 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 64 states have internal predecessors, (136), 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) [2022-01-31 21:47:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:06,285 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2022-01-31 21:47:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 21:47:06,285 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 64 states have internal predecessors, (136), 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 139 [2022-01-31 21:47:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:06,285 INFO L225 Difference]: With dead ends: 174 [2022-01-31 21:47:06,285 INFO L226 Difference]: Without dead ends: 161 [2022-01-31 21:47:06,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 52 SyntacticMatches, 25 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=891, Invalid=15111, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 21:47:06,286 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 220 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6823 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 6823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:06,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 83 Invalid, 6999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 6823 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 21:47:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-31 21:47:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2022-01-31 21:47:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0357142857142858) internal successors, (145), 140 states have internal predecessors, (145), 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) [2022-01-31 21:47:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-01-31 21:47:06,388 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 139 [2022-01-31 21:47:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:06,388 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-01-31 21:47:06,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 64 states have internal predecessors, (136), 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) [2022-01-31 21:47:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-01-31 21:47:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-31 21:47:06,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:06,389 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:06,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 21:47:06,389 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1074268509, now seen corresponding path program 56 times [2022-01-31 21:47:06,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:06,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610430054] [2022-01-31 21:47:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:06,812 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,858 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,887 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,913 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,936 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,963 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:06,990 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:07,013 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:07,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:07,076 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:07,076 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:07,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:08,520 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:08,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610430054] [2022-01-31 21:47:08,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [610430054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:08,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:08,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 21:47:08,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318376989] [2022-01-31 21:47:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:08,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 21:47:08,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 21:47:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3987, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 21:47:08,521 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 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) [2022-01-31 21:47:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:10,712 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2022-01-31 21:47:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 21:47:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 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 141 [2022-01-31 21:47:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:10,714 INFO L225 Difference]: With dead ends: 175 [2022-01-31 21:47:10,714 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 21:47:10,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 45 SyntacticMatches, 33 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4434 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=903, Invalid=15609, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 21:47:10,715 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 214 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6523 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 6684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 6523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:10,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 98 Invalid, 6684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 6523 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 21:47:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 21:47:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2022-01-31 21:47:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 142 states have internal predecessors, (147), 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) [2022-01-31 21:47:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2022-01-31 21:47:10,834 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 141 [2022-01-31 21:47:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:10,834 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2022-01-31 21:47:10,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 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) [2022-01-31 21:47:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2022-01-31 21:47:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 21:47:10,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:10,835 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:10,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 21:47:10,835 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash 676891370, now seen corresponding path program 57 times [2022-01-31 21:47:10,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:10,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892311580] [2022-01-31 21:47:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:11,342 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,454 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,486 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,526 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,597 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,637 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,674 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:11,674 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:11,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:13,070 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892311580] [2022-01-31 21:47:13,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1892311580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:13,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 21:47:13,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488566682] [2022-01-31 21:47:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:13,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 21:47:13,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 21:47:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=4115, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 21:47:13,072 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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) [2022-01-31 21:47:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:16,505 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2022-01-31 21:47:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 21:47:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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 144 [2022-01-31 21:47:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:16,506 INFO L225 Difference]: With dead ends: 177 [2022-01-31 21:47:16,506 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 21:47:16,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 46 SyntacticMatches, 34 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=915, Invalid=16115, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 21:47:16,507 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 263 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7022 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 7022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:16,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 48 Invalid, 7233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 7022 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 21:47:16,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 21:47:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2022-01-31 21:47:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.034965034965035) internal successors, (148), 143 states have internal predecessors, (148), 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) [2022-01-31 21:47:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2022-01-31 21:47:16,618 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 144 [2022-01-31 21:47:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:16,618 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2022-01-31 21:47:16,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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) [2022-01-31 21:47:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2022-01-31 21:47:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 21:47:16,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:16,619 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:16,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 21:47:16,620 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1408554296, now seen corresponding path program 58 times [2022-01-31 21:47:16,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:16,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938869256] [2022-01-31 21:47:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:17,062 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,083 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,110 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,150 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,182 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,223 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,260 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,333 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:17,379 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:17,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:19,636 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:19,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938869256] [2022-01-31 21:47:19,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [938869256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:19,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:19,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 21:47:19,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211669210] [2022-01-31 21:47:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:19,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 21:47:19,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 21:47:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=4245, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 21:47:19,638 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 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) [2022-01-31 21:47:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:22,974 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2022-01-31 21:47:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 21:47:22,975 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 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 146 [2022-01-31 21:47:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:22,983 INFO L225 Difference]: With dead ends: 179 [2022-01-31 21:47:22,983 INFO L226 Difference]: Without dead ends: 166 [2022-01-31 21:47:22,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 47 SyntacticMatches, 34 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4647 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=927, Invalid=16629, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 21:47:22,984 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 231 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7383 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 7570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 7383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:22,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 43 Invalid, 7570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 7383 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 21:47:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-31 21:47:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2022-01-31 21:47:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 145 states have internal predecessors, (150), 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) [2022-01-31 21:47:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2022-01-31 21:47:23,113 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 146 [2022-01-31 21:47:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:23,114 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2022-01-31 21:47:23,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 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) [2022-01-31 21:47:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2022-01-31 21:47:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-31 21:47:23,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:23,114 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:23,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 21:47:23,115 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash 227887910, now seen corresponding path program 59 times [2022-01-31 21:47:23,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395098302] [2022-01-31 21:47:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:23,558 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,580 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,609 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,630 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,652 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,690 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,729 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,761 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,806 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,849 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:23,849 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:23,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:25,306 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:25,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395098302] [2022-01-31 21:47:25,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [395098302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:25,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:25,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 21:47:25,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298378791] [2022-01-31 21:47:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:25,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 21:47:25,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 21:47:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=4377, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 21:47:25,308 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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) [2022-01-31 21:47:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:28,296 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2022-01-31 21:47:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 21:47:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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 148 [2022-01-31 21:47:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:28,297 INFO L225 Difference]: With dead ends: 181 [2022-01-31 21:47:28,297 INFO L226 Difference]: Without dead ends: 168 [2022-01-31 21:47:28,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 50 SyntacticMatches, 32 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=939, Invalid=17151, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 21:47:28,299 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 197 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6673 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 6673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:28,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 53 Invalid, 6821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 6673 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 21:47:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-31 21:47:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 151. [2022-01-31 21:47:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.034013605442177) internal successors, (152), 147 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:47:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2022-01-31 21:47:28,408 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 148 [2022-01-31 21:47:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:28,409 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2022-01-31 21:47:28,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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) [2022-01-31 21:47:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2022-01-31 21:47:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 21:47:28,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:28,409 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:28,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 21:47:28,409 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash 890817540, now seen corresponding path program 60 times [2022-01-31 21:47:28,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172192877] [2022-01-31 21:47:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:29,237 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,270 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,313 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,347 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,381 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,423 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,457 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,535 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,585 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:29,585 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:29,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:31,981 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:31,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172192877] [2022-01-31 21:47:31,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1172192877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:31,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:31,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 21:47:31,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907839692] [2022-01-31 21:47:31,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:31,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 21:47:31,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 21:47:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=4511, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 21:47:31,982 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 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) [2022-01-31 21:47:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:35,525 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2022-01-31 21:47:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 21:47:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 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 150 [2022-01-31 21:47:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:35,526 INFO L225 Difference]: With dead ends: 183 [2022-01-31 21:47:35,526 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 21:47:35,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 50 SyntacticMatches, 33 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4834 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=951, Invalid=17681, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 21:47:35,529 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 199 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 7719 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 7719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:35,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 183 Invalid, 7869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 7719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 21:47:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 21:47:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2022-01-31 21:47:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 149 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) [2022-01-31 21:47:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-01-31 21:47:35,648 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 150 [2022-01-31 21:47:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:35,648 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-01-31 21:47:35,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 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) [2022-01-31 21:47:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-01-31 21:47:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 21:47:35,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:35,649 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:35,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 21:47:35,649 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1983935134, now seen corresponding path program 61 times [2022-01-31 21:47:35,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:35,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046139082] [2022-01-31 21:47:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:36,375 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,410 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,454 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,497 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,532 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,705 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,751 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:36,752 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:36,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:38,609 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:38,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046139082] [2022-01-31 21:47:38,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1046139082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:38,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:38,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 21:47:38,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64004731] [2022-01-31 21:47:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:38,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 21:47:38,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 21:47:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=4647, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 21:47:38,610 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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) [2022-01-31 21:47:41,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:41,207 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2022-01-31 21:47:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 21:47:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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 152 [2022-01-31 21:47:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:41,208 INFO L225 Difference]: With dead ends: 185 [2022-01-31 21:47:41,208 INFO L226 Difference]: Without dead ends: 172 [2022-01-31 21:47:41,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 44 SyntacticMatches, 40 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=963, Invalid=18219, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 21:47:41,210 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 237 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7832 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 8025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 7832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:41,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 78 Invalid, 8025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 7832 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 21:47:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-31 21:47:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2022-01-31 21:47:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 151 states have (on average 1.033112582781457) internal successors, (156), 151 states have internal predecessors, (156), 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) [2022-01-31 21:47:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2022-01-31 21:47:41,350 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 152 [2022-01-31 21:47:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:41,350 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2022-01-31 21:47:41,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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) [2022-01-31 21:47:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2022-01-31 21:47:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-31 21:47:41,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:41,351 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:41,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 21:47:41,351 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1337683776, now seen corresponding path program 62 times [2022-01-31 21:47:41,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:41,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829407799] [2022-01-31 21:47:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:41,862 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:41,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:41,911 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:41,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:41,954 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:41,985 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:42,007 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:42,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:42,057 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:42,090 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:42,091 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:42,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:43,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:43,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829407799] [2022-01-31 21:47:43,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1829407799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:43,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:43,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 21:47:43,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022625805] [2022-01-31 21:47:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:43,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 21:47:43,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 21:47:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 21:47:43,829 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 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) [2022-01-31 21:47:47,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:47,498 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2022-01-31 21:47:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 21:47:47,498 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 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 154 [2022-01-31 21:47:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:47,499 INFO L225 Difference]: With dead ends: 189 [2022-01-31 21:47:47,499 INFO L226 Difference]: Without dead ends: 176 [2022-01-31 21:47:47,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 53 SyntacticMatches, 32 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5254 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=975, Invalid=18765, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 21:47:47,500 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 234 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8333 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 8525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 8333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:47,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 168 Invalid, 8525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 8333 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 21:47:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-31 21:47:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2022-01-31 21:47:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.032258064516129) internal successors, (160), 155 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:47:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-01-31 21:47:47,617 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 154 [2022-01-31 21:47:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:47,617 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-01-31 21:47:47,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 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) [2022-01-31 21:47:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-01-31 21:47:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-31 21:47:47,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:47,636 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:47,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 21:47:47,636 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2042211938, now seen corresponding path program 63 times [2022-01-31 21:47:47,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57339784] [2022-01-31 21:47:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:48,303 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,360 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,409 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,467 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,524 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,560 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:48,561 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:48,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:50,326 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57339784] [2022-01-31 21:47:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [57339784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:50,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:50,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 21:47:50,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709653005] [2022-01-31 21:47:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:50,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 21:47:50,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 21:47:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=4925, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 21:47:50,328 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 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) [2022-01-31 21:47:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:53,015 INFO L93 Difference]: Finished difference Result 190 states and 206 transitions. [2022-01-31 21:47:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 21:47:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 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 156 [2022-01-31 21:47:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:53,016 INFO L225 Difference]: With dead ends: 190 [2022-01-31 21:47:53,016 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 21:47:53,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 44 SyntacticMatches, 42 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5584 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=987, Invalid=19319, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 21:47:53,017 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 233 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 8052 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 8245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 8052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:53,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 153 Invalid, 8245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 8052 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 21:47:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 21:47:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2022-01-31 21:47:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0318471337579618) internal successors, (162), 157 states have internal predecessors, (162), 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) [2022-01-31 21:47:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2022-01-31 21:47:53,139 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 156 [2022-01-31 21:47:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:53,139 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2022-01-31 21:47:53,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 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) [2022-01-31 21:47:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2022-01-31 21:47:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-31 21:47:53,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:53,140 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:53,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 21:47:53,140 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1084623375, now seen corresponding path program 64 times [2022-01-31 21:47:53,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:53,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483308756] [2022-01-31 21:47:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:47:53,572 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,593 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,621 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,687 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,729 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,768 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,845 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,893 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:47:53,893 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:47:53,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:47:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:47:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:47:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:47:56,400 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:47:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483308756] [2022-01-31 21:47:56,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [483308756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:47:56,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:47:56,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 21:47:56,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577121676] [2022-01-31 21:47:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:47:56,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 21:47:56,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:47:56,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 21:47:56,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=5067, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 21:47:56,401 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 74 states, 74 states have (on average 2.108108108108108) internal successors, (156), 73 states have internal predecessors, (156), 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) [2022-01-31 21:47:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:47:59,653 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2022-01-31 21:47:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 21:47:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.108108108108108) internal successors, (156), 73 states have internal predecessors, (156), 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 159 [2022-01-31 21:47:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:47:59,654 INFO L225 Difference]: With dead ends: 192 [2022-01-31 21:47:59,654 INFO L226 Difference]: Without dead ends: 179 [2022-01-31 21:47:59,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 58 SyntacticMatches, 30 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5553 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=999, Invalid=19881, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 21:47:59,655 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 252 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8876 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 9083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 8876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:47:59,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 23 Invalid, 9083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 8876 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-31 21:47:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-31 21:47:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 162. [2022-01-31 21:47:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 158 states have internal predecessors, (163), 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) [2022-01-31 21:47:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2022-01-31 21:47:59,775 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 159 [2022-01-31 21:47:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:47:59,775 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2022-01-31 21:47:59,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.108108108108108) internal successors, (156), 73 states have internal predecessors, (156), 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) [2022-01-31 21:47:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2022-01-31 21:47:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-31 21:47:59,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:47:59,775 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:47:59,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 21:47:59,776 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:47:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:47:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -420121427, now seen corresponding path program 65 times [2022-01-31 21:47:59,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:47:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661487880] [2022-01-31 21:47:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:00,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,446 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,468 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,489 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,516 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,593 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,679 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:00,680 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:00,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:03,178 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:03,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661487880] [2022-01-31 21:48:03,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1661487880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:03,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:03,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 21:48:03,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678454176] [2022-01-31 21:48:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:03,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 21:48:03,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 21:48:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=5211, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 21:48:03,179 INFO L87 Difference]: Start difference. First operand 162 states and 166 transitions. Second operand has 75 states, 75 states have (on average 2.1066666666666665) internal successors, (158), 74 states have internal predecessors, (158), 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) [2022-01-31 21:48:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:06,108 INFO L93 Difference]: Finished difference Result 194 states and 210 transitions. [2022-01-31 21:48:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 21:48:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.1066666666666665) internal successors, (158), 74 states have internal predecessors, (158), 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 161 [2022-01-31 21:48:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:06,108 INFO L225 Difference]: With dead ends: 194 [2022-01-31 21:48:06,108 INFO L226 Difference]: Without dead ends: 181 [2022-01-31 21:48:06,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 55 SyntacticMatches, 34 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5621 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1011, Invalid=20451, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 21:48:06,109 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 330 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9159 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 9444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 9159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:06,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 183 Invalid, 9444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 9159 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 21:48:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-01-31 21:48:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2022-01-31 21:48:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.03125) internal successors, (165), 160 states have internal predecessors, (165), 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) [2022-01-31 21:48:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 168 transitions. [2022-01-31 21:48:06,238 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 168 transitions. Word has length 161 [2022-01-31 21:48:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:06,238 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 168 transitions. [2022-01-31 21:48:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.1066666666666665) internal successors, (158), 74 states have internal predecessors, (158), 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) [2022-01-31 21:48:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 168 transitions. [2022-01-31 21:48:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-31 21:48:06,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:06,238 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 21:48:06,239 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 924102603, now seen corresponding path program 66 times [2022-01-31 21:48:06,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537773931] [2022-01-31 21:48:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:06,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,683 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,736 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,758 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,785 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,831 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,860 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:06,919 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:06,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:08,583 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:08,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537773931] [2022-01-31 21:48:08,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [537773931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:08,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:08,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 21:48:08,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97067899] [2022-01-31 21:48:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:08,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 21:48:08,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:08,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 21:48:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=5357, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 21:48:08,585 INFO L87 Difference]: Start difference. First operand 164 states and 168 transitions. Second operand has 76 states, 76 states have (on average 2.1052631578947367) internal successors, (160), 75 states have internal predecessors, (160), 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) [2022-01-31 21:48:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:11,386 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2022-01-31 21:48:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 21:48:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.1052631578947367) internal successors, (160), 75 states have internal predecessors, (160), 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 163 [2022-01-31 21:48:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:11,386 INFO L225 Difference]: With dead ends: 196 [2022-01-31 21:48:11,387 INFO L226 Difference]: Without dead ends: 183 [2022-01-31 21:48:11,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 58 SyntacticMatches, 32 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5935 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1023, Invalid=21029, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 21:48:11,391 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 202 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 8234 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 8234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:11,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 143 Invalid, 8392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 8234 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-31 21:48:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-31 21:48:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 166. [2022-01-31 21:48:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 162 states have internal predecessors, (167), 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) [2022-01-31 21:48:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2022-01-31 21:48:11,517 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 163 [2022-01-31 21:48:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2022-01-31 21:48:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.1052631578947367) internal successors, (160), 75 states have internal predecessors, (160), 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) [2022-01-31 21:48:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2022-01-31 21:48:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-31 21:48:11,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:11,517 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:11,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 21:48:11,518 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -61760663, now seen corresponding path program 67 times [2022-01-31 21:48:11,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679089976] [2022-01-31 21:48:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:11,986 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,035 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,132 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,162 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,189 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:12,225 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:12,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:13,873 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:13,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679089976] [2022-01-31 21:48:13,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1679089976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:13,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:13,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 21:48:13,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832756230] [2022-01-31 21:48:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:13,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 21:48:13,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 21:48:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=5505, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 21:48:13,875 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand has 77 states, 77 states have (on average 2.103896103896104) internal successors, (162), 76 states have internal predecessors, (162), 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) [2022-01-31 21:48:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:16,953 INFO L93 Difference]: Finished difference Result 198 states and 214 transitions. [2022-01-31 21:48:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 21:48:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.103896103896104) internal successors, (162), 76 states have internal predecessors, (162), 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 165 [2022-01-31 21:48:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:16,954 INFO L225 Difference]: With dead ends: 198 [2022-01-31 21:48:16,954 INFO L226 Difference]: Without dead ends: 185 [2022-01-31 21:48:16,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 61 SyntacticMatches, 30 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6067 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1035, Invalid=21615, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 21:48:16,955 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 246 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10017 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 10214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 10017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:16,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 248 Invalid, 10214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 10017 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 21:48:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-31 21:48:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2022-01-31 21:48:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.0304878048780488) internal successors, (169), 164 states have internal predecessors, (169), 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) [2022-01-31 21:48:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2022-01-31 21:48:17,103 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 165 [2022-01-31 21:48:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:17,104 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2022-01-31 21:48:17,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.103896103896104) internal successors, (162), 76 states have internal predecessors, (162), 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) [2022-01-31 21:48:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2022-01-31 21:48:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-31 21:48:17,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:17,105 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:17,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 21:48:17,105 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1711413127, now seen corresponding path program 68 times [2022-01-31 21:48:17,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:17,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629203615] [2022-01-31 21:48:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:17,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,621 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,647 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,669 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,690 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,759 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,852 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:17,853 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:17,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:19,990 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:19,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629203615] [2022-01-31 21:48:19,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629203615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:19,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 21:48:19,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766942059] [2022-01-31 21:48:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:19,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 21:48:19,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 21:48:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=5655, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 21:48:19,991 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 78 states, 78 states have (on average 2.1025641025641026) internal successors, (164), 77 states have internal predecessors, (164), 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) [2022-01-31 21:48:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:23,132 INFO L93 Difference]: Finished difference Result 200 states and 216 transitions. [2022-01-31 21:48:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 21:48:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.1025641025641026) internal successors, (164), 77 states have internal predecessors, (164), 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 167 [2022-01-31 21:48:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:23,133 INFO L225 Difference]: With dead ends: 200 [2022-01-31 21:48:23,133 INFO L226 Difference]: Without dead ends: 187 [2022-01-31 21:48:23,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 48 SyntacticMatches, 44 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6460 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1047, Invalid=22209, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 21:48:23,134 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 206 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8731 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 8893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 8731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:23,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 118 Invalid, 8893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 8731 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 21:48:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-31 21:48:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 170. [2022-01-31 21:48:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 166 states have internal predecessors, (171), 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) [2022-01-31 21:48:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2022-01-31 21:48:23,264 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 167 [2022-01-31 21:48:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:23,265 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2022-01-31 21:48:23,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.1025641025641026) internal successors, (164), 77 states have internal predecessors, (164), 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) [2022-01-31 21:48:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2022-01-31 21:48:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-31 21:48:23,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:23,265 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:23,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 21:48:23,265 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash 629408805, now seen corresponding path program 69 times [2022-01-31 21:48:23,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367409640] [2022-01-31 21:48:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:23,691 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,712 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,765 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,838 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,859 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,887 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,936 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:23,936 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:23,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:26,788 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:26,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367409640] [2022-01-31 21:48:26,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367409640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:26,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:26,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 21:48:26,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586234767] [2022-01-31 21:48:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:26,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 21:48:26,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 21:48:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5807, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 21:48:26,789 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 78 states have internal predecessors, (166), 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) [2022-01-31 21:48:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:29,840 INFO L93 Difference]: Finished difference Result 204 states and 221 transitions. [2022-01-31 21:48:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 21:48:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 78 states have internal predecessors, (166), 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 169 [2022-01-31 21:48:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:29,840 INFO L225 Difference]: With dead ends: 204 [2022-01-31 21:48:29,841 INFO L226 Difference]: Without dead ends: 191 [2022-01-31 21:48:29,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 52 SyntacticMatches, 41 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6652 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1059, Invalid=22811, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 21:48:29,842 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 265 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9320 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 9541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 9320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:29,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 73 Invalid, 9541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 9320 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 21:48:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-31 21:48:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2022-01-31 21:48:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 170 states have internal predecessors, (175), 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) [2022-01-31 21:48:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2022-01-31 21:48:29,992 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 169 [2022-01-31 21:48:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:29,992 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2022-01-31 21:48:29,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 78 states have internal predecessors, (166), 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) [2022-01-31 21:48:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2022-01-31 21:48:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-31 21:48:29,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:29,993 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:29,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 21:48:29,993 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash 205340995, now seen corresponding path program 70 times [2022-01-31 21:48:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:29,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70012705] [2022-01-31 21:48:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:30,416 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,465 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,485 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,506 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,554 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,575 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,603 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,638 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:30,638 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:30,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:33,136 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:33,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70012705] [2022-01-31 21:48:33,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [70012705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:33,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:33,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 21:48:33,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253714794] [2022-01-31 21:48:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:33,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 21:48:33,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 21:48:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=5961, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 21:48:33,138 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 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) [2022-01-31 21:48:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:36,882 INFO L93 Difference]: Finished difference Result 205 states and 221 transitions. [2022-01-31 21:48:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 21:48:36,882 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 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 171 [2022-01-31 21:48:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:36,883 INFO L225 Difference]: With dead ends: 205 [2022-01-31 21:48:36,883 INFO L226 Difference]: Without dead ends: 192 [2022-01-31 21:48:36,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 64 SyntacticMatches, 30 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6634 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1071, Invalid=23421, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 21:48:36,884 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 218 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8565 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 8739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 8565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:36,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 43 Invalid, 8739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 8565 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 21:48:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-01-31 21:48:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 176. [2022-01-31 21:48:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 172 states have internal predecessors, (177), 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) [2022-01-31 21:48:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2022-01-31 21:48:37,037 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 171 [2022-01-31 21:48:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:37,037 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2022-01-31 21:48:37,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 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) [2022-01-31 21:48:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2022-01-31 21:48:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 21:48:37,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:37,038 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:37,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 21:48:37,038 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -606094262, now seen corresponding path program 71 times [2022-01-31 21:48:37,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262925557] [2022-01-31 21:48:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:37,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,617 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,658 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,692 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,735 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,776 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,850 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:37,888 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:37,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:39,999 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:40,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262925557] [2022-01-31 21:48:40,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [262925557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:40,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 21:48:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207589359] [2022-01-31 21:48:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:40,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 21:48:40,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 21:48:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=6117, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 21:48:40,001 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 81 states, 81 states have (on average 2.111111111111111) internal successors, (171), 80 states have internal predecessors, (171), 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) [2022-01-31 21:48:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:43,199 INFO L93 Difference]: Finished difference Result 207 states and 223 transitions. [2022-01-31 21:48:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 21:48:43,199 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.111111111111111) internal successors, (171), 80 states have internal predecessors, (171), 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 174 [2022-01-31 21:48:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:43,200 INFO L225 Difference]: With dead ends: 207 [2022-01-31 21:48:43,200 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 21:48:43,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 53 SyntacticMatches, 43 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7141 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1083, Invalid=24039, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 21:48:43,202 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 258 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9254 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 9466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 9254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:43,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 153 Invalid, 9466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 9254 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 21:48:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 21:48:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2022-01-31 21:48:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 173 states have (on average 1.0289017341040463) internal successors, (178), 173 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:48:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2022-01-31 21:48:43,355 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 174 [2022-01-31 21:48:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:43,355 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2022-01-31 21:48:43,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.111111111111111) internal successors, (171), 80 states have internal predecessors, (171), 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) [2022-01-31 21:48:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2022-01-31 21:48:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 21:48:43,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:43,355 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:43,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 21:48:43,356 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1702132696, now seen corresponding path program 72 times [2022-01-31 21:48:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52025439] [2022-01-31 21:48:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:43,795 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,816 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,844 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,865 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,886 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,913 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,934 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,956 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:43,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:44,019 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:44,019 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:44,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:45,980 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:45,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52025439] [2022-01-31 21:48:45,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [52025439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:45,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:45,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 21:48:45,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763556883] [2022-01-31 21:48:45,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:45,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 21:48:45,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 21:48:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=6275, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 21:48:45,982 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 82 states, 82 states have (on average 2.1097560975609757) internal successors, (173), 81 states have internal predecessors, (173), 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) [2022-01-31 21:48:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:49,410 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2022-01-31 21:48:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 21:48:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.1097560975609757) internal successors, (173), 81 states have internal predecessors, (173), 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 176 [2022-01-31 21:48:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:49,411 INFO L225 Difference]: With dead ends: 209 [2022-01-31 21:48:49,411 INFO L226 Difference]: Without dead ends: 196 [2022-01-31 21:48:49,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 58 SyntacticMatches, 39 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7042 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1095, Invalid=24665, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 21:48:49,412 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 10745 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 10960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 10745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:49,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 188 Invalid, 10960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 10745 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 21:48:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-31 21:48:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 179. [2022-01-31 21:48:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 1.0285714285714285) internal successors, (180), 175 states have internal predecessors, (180), 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) [2022-01-31 21:48:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2022-01-31 21:48:49,572 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 176 [2022-01-31 21:48:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:49,572 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2022-01-31 21:48:49,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.1097560975609757) internal successors, (173), 81 states have internal predecessors, (173), 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) [2022-01-31 21:48:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2022-01-31 21:48:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 21:48:49,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:49,573 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:49,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 21:48:49,573 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1566887046, now seen corresponding path program 73 times [2022-01-31 21:48:49,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:49,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856552957] [2022-01-31 21:48:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:50,363 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,397 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,441 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,477 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,511 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,554 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,589 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,666 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:50,714 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:50,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:48:53,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:48:53,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856552957] [2022-01-31 21:48:53,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [856552957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:48:53,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:48:53,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 21:48:53,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578361825] [2022-01-31 21:48:53,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:48:53,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 21:48:53,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:48:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 21:48:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=6435, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 21:48:53,988 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 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) [2022-01-31 21:48:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:48:57,565 INFO L93 Difference]: Finished difference Result 211 states and 227 transitions. [2022-01-31 21:48:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 21:48:57,569 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 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 178 [2022-01-31 21:48:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:48:57,570 INFO L225 Difference]: With dead ends: 211 [2022-01-31 21:48:57,570 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 21:48:57,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 54 SyntacticMatches, 44 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7412 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1107, Invalid=25299, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 21:48:57,572 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 339 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11210 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 11210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:48:57,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 28 Invalid, 11510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 11210 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-31 21:48:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 21:48:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 181. [2022-01-31 21:48:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 177 states have internal predecessors, (182), 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) [2022-01-31 21:48:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2022-01-31 21:48:57,734 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 178 [2022-01-31 21:48:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:48:57,734 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2022-01-31 21:48:57,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 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) [2022-01-31 21:48:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2022-01-31 21:48:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 21:48:57,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:57,735 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 21:48:57,735 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -821201564, now seen corresponding path program 74 times [2022-01-31 21:48:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763950271] [2022-01-31 21:48:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:58,395 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,426 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,495 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,526 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,597 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,628 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,667 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,712 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:48:58,712 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:48:58,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:48:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:48:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:01,385 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:01,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763950271] [2022-01-31 21:49:01,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1763950271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:01,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:01,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 21:49:01,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603863878] [2022-01-31 21:49:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:01,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 21:49:01,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 21:49:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=6597, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 21:49:01,387 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 84 states, 84 states have (on average 2.107142857142857) internal successors, (177), 83 states have internal predecessors, (177), 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) [2022-01-31 21:49:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:05,148 INFO L93 Difference]: Finished difference Result 213 states and 229 transitions. [2022-01-31 21:49:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 21:49:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.107142857142857) internal successors, (177), 83 states have internal predecessors, (177), 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 180 [2022-01-31 21:49:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:05,149 INFO L225 Difference]: With dead ends: 213 [2022-01-31 21:49:05,149 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 21:49:05,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 58 SyntacticMatches, 41 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7403 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1119, Invalid=25941, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 21:49:05,150 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 297 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 12247 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 12503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 12247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:05,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 268 Invalid, 12503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 12247 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 21:49:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 21:49:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-01-31 21:49:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.0279329608938548) internal successors, (184), 179 states have internal predecessors, (184), 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) [2022-01-31 21:49:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2022-01-31 21:49:05,302 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 180 [2022-01-31 21:49:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:05,302 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2022-01-31 21:49:05,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.107142857142857) internal successors, (177), 83 states have internal predecessors, (177), 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) [2022-01-31 21:49:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2022-01-31 21:49:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 21:49:05,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:05,302 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:05,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 21:49:05,303 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:05,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2033147586, now seen corresponding path program 75 times [2022-01-31 21:49:05,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:05,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21021274] [2022-01-31 21:49:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:05,725 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,747 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,776 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,798 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,819 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,848 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,870 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,892 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:05,957 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:06,009 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:06,009 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:06,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:08,630 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:08,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21021274] [2022-01-31 21:49:08,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [21021274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:08,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:08,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 21:49:08,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701289700] [2022-01-31 21:49:08,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:08,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 21:49:08,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 21:49:08,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=6761, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 21:49:08,632 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 85 states, 85 states have (on average 2.1058823529411765) internal successors, (179), 84 states have internal predecessors, (179), 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) [2022-01-31 21:49:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:12,144 INFO L93 Difference]: Finished difference Result 215 states and 231 transitions. [2022-01-31 21:49:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 21:49:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.1058823529411765) internal successors, (179), 84 states have internal predecessors, (179), 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 182 [2022-01-31 21:49:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:12,145 INFO L225 Difference]: With dead ends: 215 [2022-01-31 21:49:12,145 INFO L226 Difference]: Without dead ends: 202 [2022-01-31 21:49:12,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 63 SyntacticMatches, 37 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7425 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1131, Invalid=26591, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 21:49:12,146 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 317 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10685 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 10956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 10685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:12,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 53 Invalid, 10956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 10685 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 21:49:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-31 21:49:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-01-31 21:49:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 1.0276243093922652) internal successors, (186), 181 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:49:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2022-01-31 21:49:12,309 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 182 [2022-01-31 21:49:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:12,309 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2022-01-31 21:49:12,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.1058823529411765) internal successors, (179), 84 states have internal predecessors, (179), 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) [2022-01-31 21:49:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2022-01-31 21:49:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 21:49:12,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:12,310 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:12,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 21:49:12,310 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 578578592, now seen corresponding path program 76 times [2022-01-31 21:49:12,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:12,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914579527] [2022-01-31 21:49:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:12,752 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,824 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,846 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,874 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,896 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,945 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:12,983 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:12,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:15,632 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:15,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914579527] [2022-01-31 21:49:15,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [914579527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:15,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:15,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 21:49:15,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944581820] [2022-01-31 21:49:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:15,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 21:49:15,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 21:49:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=6927, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 21:49:15,634 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 86 states, 86 states have (on average 2.104651162790698) internal successors, (181), 85 states have internal predecessors, (181), 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) [2022-01-31 21:49:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:19,465 INFO L93 Difference]: Finished difference Result 219 states and 236 transitions. [2022-01-31 21:49:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 21:49:19,465 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.104651162790698) internal successors, (181), 85 states have internal predecessors, (181), 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 184 [2022-01-31 21:49:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:19,466 INFO L225 Difference]: With dead ends: 219 [2022-01-31 21:49:19,466 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 21:49:19,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 64 SyntacticMatches, 37 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7881 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1143, Invalid=27249, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 21:49:19,467 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 279 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12460 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 12697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 12460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:19,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 88 Invalid, 12697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 12460 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-31 21:49:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 21:49:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 189. [2022-01-31 21:49:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.027027027027027) internal successors, (190), 185 states have internal predecessors, (190), 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) [2022-01-31 21:49:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2022-01-31 21:49:19,644 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 184 [2022-01-31 21:49:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:19,644 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2022-01-31 21:49:19,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.104651162790698) internal successors, (181), 85 states have internal predecessors, (181), 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) [2022-01-31 21:49:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2022-01-31 21:49:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-31 21:49:19,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:19,645 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:19,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 21:49:19,645 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:19,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:19,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1397853442, now seen corresponding path program 77 times [2022-01-31 21:49:19,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:19,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562732044] [2022-01-31 21:49:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:20,062 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,083 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,112 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,211 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,242 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,275 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,318 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,366 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:20,366 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:20,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:23,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562732044] [2022-01-31 21:49:23,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [562732044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:23,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:23,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 21:49:23,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639228294] [2022-01-31 21:49:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:23,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 21:49:23,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:23,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 21:49:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=7095, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 21:49:23,231 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 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) [2022-01-31 21:49:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:27,192 INFO L93 Difference]: Finished difference Result 220 states and 236 transitions. [2022-01-31 21:49:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 21:49:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 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 186 [2022-01-31 21:49:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:27,193 INFO L225 Difference]: With dead ends: 220 [2022-01-31 21:49:27,193 INFO L226 Difference]: Without dead ends: 207 [2022-01-31 21:49:27,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 65 SyntacticMatches, 37 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7993 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1155, Invalid=27915, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 21:49:27,194 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 232 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 13163 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 13353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 13163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:27,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 308 Invalid, 13353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 13163 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 21:49:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-31 21:49:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2022-01-31 21:49:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0267379679144386) internal successors, (192), 187 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:49:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2022-01-31 21:49:27,366 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 186 [2022-01-31 21:49:27,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:27,366 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2022-01-31 21:49:27,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 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) [2022-01-31 21:49:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2022-01-31 21:49:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-31 21:49:27,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:27,367 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:27,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 21:49:27,367 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1335235409, now seen corresponding path program 78 times [2022-01-31 21:49:27,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:27,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926962063] [2022-01-31 21:49:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:27,805 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,926 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,948 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:27,997 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:28,037 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:28,038 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:28,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:30,270 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926962063] [2022-01-31 21:49:30,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1926962063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:30,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:30,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 21:49:30,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408505509] [2022-01-31 21:49:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:30,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 21:49:30,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 21:49:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=7265, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 21:49:30,272 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand has 88 states, 88 states have (on average 2.1136363636363638) internal successors, (186), 87 states have internal predecessors, (186), 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) [2022-01-31 21:49:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:34,328 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2022-01-31 21:49:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 21:49:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.1136363636363638) internal successors, (186), 87 states have internal predecessors, (186), 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 189 [2022-01-31 21:49:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:34,329 INFO L225 Difference]: With dead ends: 222 [2022-01-31 21:49:34,329 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 21:49:34,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 62 SyntacticMatches, 42 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8192 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1167, Invalid=28589, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 21:49:34,331 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 272 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 13556 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 13789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 13556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:34,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 123 Invalid, 13789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 13556 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 21:49:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 21:49:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2022-01-31 21:49:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 188 states have (on average 1.0265957446808511) internal successors, (193), 188 states have internal predecessors, (193), 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) [2022-01-31 21:49:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2022-01-31 21:49:34,513 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 189 [2022-01-31 21:49:34,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:34,513 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2022-01-31 21:49:34,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.1136363636363638) internal successors, (186), 87 states have internal predecessors, (186), 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) [2022-01-31 21:49:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2022-01-31 21:49:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-31 21:49:34,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:34,514 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:34,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 21:49:34,514 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1967861581, now seen corresponding path program 79 times [2022-01-31 21:49:34,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448728366] [2022-01-31 21:49:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:34,940 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:34,993 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,039 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,076 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,110 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,153 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,186 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,220 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,263 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,312 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:35,312 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:35,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:35,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:38,249 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448728366] [2022-01-31 21:49:38,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1448728366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:38,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:38,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 21:49:38,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250638573] [2022-01-31 21:49:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:38,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 21:49:38,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 21:49:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=7437, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 21:49:38,251 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 88 states have internal predecessors, (188), 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) [2022-01-31 21:49:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:42,498 INFO L93 Difference]: Finished difference Result 224 states and 240 transitions. [2022-01-31 21:49:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 21:49:42,498 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 88 states have internal predecessors, (188), 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 191 [2022-01-31 21:49:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:42,499 INFO L225 Difference]: With dead ends: 224 [2022-01-31 21:49:42,499 INFO L226 Difference]: Without dead ends: 211 [2022-01-31 21:49:42,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 63 SyntacticMatches, 42 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8482 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1179, Invalid=29271, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 21:49:42,501 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 265 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 14326 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 14555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 14326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:42,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 328 Invalid, 14555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 14326 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 21:49:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-01-31 21:49:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2022-01-31 21:49:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.0263157894736843) internal successors, (195), 190 states have internal predecessors, (195), 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) [2022-01-31 21:49:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2022-01-31 21:49:42,687 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 191 [2022-01-31 21:49:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:42,687 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2022-01-31 21:49:42,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.1123595505617976) internal successors, (188), 88 states have internal predecessors, (188), 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) [2022-01-31 21:49:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2022-01-31 21:49:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 21:49:42,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:42,690 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:42,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 21:49:42,690 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2031730069, now seen corresponding path program 80 times [2022-01-31 21:49:42,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:42,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779656991] [2022-01-31 21:49:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:43,313 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,357 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,386 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,489 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,512 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,542 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,604 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:43,604 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:43,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:46,124 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:46,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779656991] [2022-01-31 21:49:46,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779656991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:46,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:46,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 21:49:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179158519] [2022-01-31 21:49:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:46,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 21:49:46,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 21:49:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=7611, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 21:49:46,127 INFO L87 Difference]: Start difference. First operand 194 states and 198 transitions. Second operand has 90 states, 90 states have (on average 2.111111111111111) internal successors, (190), 89 states have internal predecessors, (190), 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) [2022-01-31 21:49:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:49:51,513 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2022-01-31 21:49:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 21:49:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.111111111111111) internal successors, (190), 89 states have internal predecessors, (190), 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 193 [2022-01-31 21:49:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:49:51,515 INFO L225 Difference]: With dead ends: 226 [2022-01-31 21:49:51,515 INFO L226 Difference]: Without dead ends: 213 [2022-01-31 21:49:51,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 60 SyntacticMatches, 46 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8669 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1191, Invalid=29961, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 21:49:51,516 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 268 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 13772 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 14003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 13772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:49:51,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 243 Invalid, 14003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 13772 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-31 21:49:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-31 21:49:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2022-01-31 21:49:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0260416666666667) internal successors, (197), 192 states have internal predecessors, (197), 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) [2022-01-31 21:49:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 200 transitions. [2022-01-31 21:49:51,705 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 200 transitions. Word has length 193 [2022-01-31 21:49:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:49:51,705 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 200 transitions. [2022-01-31 21:49:51,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.111111111111111) internal successors, (190), 89 states have internal predecessors, (190), 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) [2022-01-31 21:49:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 200 transitions. [2022-01-31 21:49:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-31 21:49:51,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:49:51,706 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:49:51,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 21:49:51,706 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:49:51,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:49:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1643575799, now seen corresponding path program 81 times [2022-01-31 21:49:51,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:49:51,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856454260] [2022-01-31 21:49:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:49:52,167 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,216 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,242 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,311 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,338 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,393 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,432 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:49:52,432 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:49:52,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:49:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:49:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:49:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:49:55,324 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:49:55,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856454260] [2022-01-31 21:49:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856454260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:49:55,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:49:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 21:49:55,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631305013] [2022-01-31 21:49:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:49:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 21:49:55,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:49:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 21:49:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=7787, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 21:49:55,326 INFO L87 Difference]: Start difference. First operand 196 states and 200 transitions. Second operand has 91 states, 91 states have (on average 2.10989010989011) internal successors, (192), 90 states have internal predecessors, (192), 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) [2022-01-31 21:50:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:01,385 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2022-01-31 21:50:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 21:50:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.10989010989011) internal successors, (192), 90 states have internal predecessors, (192), 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 195 [2022-01-31 21:50:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:01,386 INFO L225 Difference]: With dead ends: 228 [2022-01-31 21:50:01,386 INFO L226 Difference]: Without dead ends: 215 [2022-01-31 21:50:01,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 67 SyntacticMatches, 40 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8903 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1203, Invalid=30659, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 21:50:01,387 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 317 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 13958 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 14238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 13958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:01,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 213 Invalid, 14238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 13958 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 21:50:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-31 21:50:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2022-01-31 21:50:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 194 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:50:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 202 transitions. [2022-01-31 21:50:01,576 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 202 transitions. Word has length 195 [2022-01-31 21:50:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:01,576 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 202 transitions. [2022-01-31 21:50:01,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.10989010989011) internal successors, (192), 90 states have internal predecessors, (192), 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) [2022-01-31 21:50:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 202 transitions. [2022-01-31 21:50:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-31 21:50:01,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:01,577 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:01,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 21:50:01,577 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2005490215, now seen corresponding path program 82 times [2022-01-31 21:50:01,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:01,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798279290] [2022-01-31 21:50:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:02,037 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,070 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,113 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,145 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,178 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,253 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,286 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,329 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:02,378 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:02,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:06,235 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798279290] [2022-01-31 21:50:06,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [798279290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:06,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:06,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 21:50:06,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878690353] [2022-01-31 21:50:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:06,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 21:50:06,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 21:50:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=7965, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 21:50:06,237 INFO L87 Difference]: Start difference. First operand 198 states and 202 transitions. Second operand has 92 states, 92 states have (on average 2.108695652173913) internal successors, (194), 91 states have internal predecessors, (194), 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) [2022-01-31 21:50:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:11,387 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions. [2022-01-31 21:50:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 21:50:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.108695652173913) internal successors, (194), 91 states have internal predecessors, (194), 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 197 [2022-01-31 21:50:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:11,388 INFO L225 Difference]: With dead ends: 230 [2022-01-31 21:50:11,388 INFO L226 Difference]: Without dead ends: 217 [2022-01-31 21:50:11,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 69 SyntacticMatches, 39 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9057 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1215, Invalid=31365, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 21:50:11,389 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 12074 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 12322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 12074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:11,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 158 Invalid, 12322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 12074 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 21:50:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-31 21:50:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-01-31 21:50:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.0255102040816326) internal successors, (201), 196 states have internal predecessors, (201), 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) [2022-01-31 21:50:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2022-01-31 21:50:11,572 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 197 [2022-01-31 21:50:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:11,572 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2022-01-31 21:50:11,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.108695652173913) internal successors, (194), 91 states have internal predecessors, (194), 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) [2022-01-31 21:50:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2022-01-31 21:50:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-31 21:50:11,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:11,573 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:11,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 21:50:11,573 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -230351163, now seen corresponding path program 83 times [2022-01-31 21:50:11,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:11,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337129220] [2022-01-31 21:50:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:12,013 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,035 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,064 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,111 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,138 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,164 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,185 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,213 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:12,253 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:12,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:14,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:14,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337129220] [2022-01-31 21:50:14,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [337129220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:14,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:14,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 21:50:14,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898905651] [2022-01-31 21:50:14,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:14,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 21:50:14,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:14,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 21:50:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=8145, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 21:50:14,651 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand has 93 states, 93 states have (on average 2.10752688172043) internal successors, (196), 92 states have internal predecessors, (196), 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) [2022-01-31 21:50:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:18,831 INFO L93 Difference]: Finished difference Result 236 states and 254 transitions. [2022-01-31 21:50:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 21:50:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.10752688172043) internal successors, (196), 92 states have internal predecessors, (196), 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 199 [2022-01-31 21:50:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:18,832 INFO L225 Difference]: With dead ends: 236 [2022-01-31 21:50:18,832 INFO L226 Difference]: Without dead ends: 223 [2022-01-31 21:50:18,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 69 SyntacticMatches, 40 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9092 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1227, Invalid=32079, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 21:50:18,833 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 250 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12882 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 13092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 12882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:18,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 108 Invalid, 13092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 12882 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 21:50:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-31 21:50:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2022-01-31 21:50:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.0247524752475248) internal successors, (207), 202 states have internal predecessors, (207), 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) [2022-01-31 21:50:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2022-01-31 21:50:19,020 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 199 [2022-01-31 21:50:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:19,020 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2022-01-31 21:50:19,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.10752688172043) internal successors, (196), 92 states have internal predecessors, (196), 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) [2022-01-31 21:50:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2022-01-31 21:50:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-31 21:50:19,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:19,021 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:19,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 21:50:19,021 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1390267421, now seen corresponding path program 84 times [2022-01-31 21:50:19,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:19,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942951707] [2022-01-31 21:50:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:19,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,609 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,652 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,679 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,784 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,832 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:19,832 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:19,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:22,779 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942951707] [2022-01-31 21:50:22,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1942951707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:22,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:22,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 21:50:22,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509211993] [2022-01-31 21:50:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:22,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 21:50:22,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 21:50:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=8327, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 21:50:22,780 INFO L87 Difference]: Start difference. First operand 206 states and 210 transitions. Second operand has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 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) [2022-01-31 21:50:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:27,231 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2022-01-31 21:50:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 21:50:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 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 201 [2022-01-31 21:50:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:27,232 INFO L225 Difference]: With dead ends: 237 [2022-01-31 21:50:27,232 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 21:50:27,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 64 SyntacticMatches, 46 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9496 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1239, Invalid=32801, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 21:50:27,233 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 248 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 14104 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 14312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 14104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:27,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 228 Invalid, 14312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 14104 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-31 21:50:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 21:50:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 208. [2022-01-31 21:50:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.0245098039215685) internal successors, (209), 204 states have internal predecessors, (209), 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) [2022-01-31 21:50:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2022-01-31 21:50:27,438 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 201 [2022-01-31 21:50:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:27,438 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2022-01-31 21:50:27,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 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) [2022-01-31 21:50:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2022-01-31 21:50:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 21:50:27,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:27,439 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:27,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 21:50:27,439 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:27,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1003201358, now seen corresponding path program 85 times [2022-01-31 21:50:27,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:27,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22970268] [2022-01-31 21:50:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:27,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:27,910 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:27,939 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:27,965 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:27,987 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,018 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,067 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:28,142 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:28,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:30,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22970268] [2022-01-31 21:50:30,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [22970268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:30,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:30,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 21:50:30,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519181590] [2022-01-31 21:50:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:30,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 21:50:30,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 21:50:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=8511, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 21:50:30,842 INFO L87 Difference]: Start difference. First operand 208 states and 212 transitions. Second operand has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 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) [2022-01-31 21:50:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:35,596 INFO L93 Difference]: Finished difference Result 238 states and 254 transitions. [2022-01-31 21:50:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 21:50:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 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 204 [2022-01-31 21:50:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:35,597 INFO L225 Difference]: With dead ends: 238 [2022-01-31 21:50:35,597 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 21:50:35,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 64 SyntacticMatches, 48 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9866 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1251, Invalid=33531, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 21:50:35,599 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 15785 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 16042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 15785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:35,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 158 Invalid, 16042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 15785 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 21:50:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 21:50:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 209. [2022-01-31 21:50:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.024390243902439) internal successors, (210), 205 states have internal predecessors, (210), 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) [2022-01-31 21:50:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2022-01-31 21:50:35,810 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 204 [2022-01-31 21:50:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:35,810 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2022-01-31 21:50:35,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 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) [2022-01-31 21:50:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2022-01-31 21:50:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-31 21:50:35,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:35,811 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:35,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 21:50:35,811 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash 102963807, now seen corresponding path program 86 times [2022-01-31 21:50:35,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:35,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007559354] [2022-01-31 21:50:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:36,238 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:50:36,239 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-01-31 21:50:36,256 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,278 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,307 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,344 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,377 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,418 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,468 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:36,468 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:36,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:40,688 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007559354] [2022-01-31 21:50:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007559354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:40,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:40,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 21:50:40,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525121641] [2022-01-31 21:50:40,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:40,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 21:50:40,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 21:50:40,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=8697, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 21:50:40,689 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand has 96 states, 96 states have (on average 2.125) internal successors, (204), 95 states have internal predecessors, (204), 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) [2022-01-31 21:50:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:46,774 INFO L93 Difference]: Finished difference Result 240 states and 256 transitions. [2022-01-31 21:50:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 21:50:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.125) internal successors, (204), 95 states have internal predecessors, (204), 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 207 [2022-01-31 21:50:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:46,775 INFO L225 Difference]: With dead ends: 240 [2022-01-31 21:50:46,775 INFO L226 Difference]: Without dead ends: 227 [2022-01-31 21:50:46,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 69 SyntacticMatches, 45 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9978 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1263, Invalid=34269, Unknown=0, NotChecked=0, Total=35532 [2022-01-31 21:50:46,777 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 304 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14112 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 14378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 14112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:46,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 118 Invalid, 14378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 14112 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-31 21:50:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-31 21:50:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 210. [2022-01-31 21:50:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.0242718446601942) internal successors, (211), 206 states have internal predecessors, (211), 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) [2022-01-31 21:50:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 214 transitions. [2022-01-31 21:50:46,992 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 214 transitions. Word has length 207 [2022-01-31 21:50:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:46,992 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 214 transitions. [2022-01-31 21:50:46,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.125) internal successors, (204), 95 states have internal predecessors, (204), 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) [2022-01-31 21:50:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 214 transitions. [2022-01-31 21:50:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-31 21:50:46,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:46,993 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:46,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 21:50:46,993 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:46,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1097838845, now seen corresponding path program 87 times [2022-01-31 21:50:46,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:46,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488733975] [2022-01-31 21:50:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:47,413 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,506 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,534 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,555 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,578 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,608 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,668 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:47,669 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:47,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:50:50,443 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:50,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488733975] [2022-01-31 21:50:50,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [488733975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:50,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:50,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 21:50:50,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3768258] [2022-01-31 21:50:50,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:50,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 21:50:50,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 21:50:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=8885, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 21:50:50,445 INFO L87 Difference]: Start difference. First operand 210 states and 214 transitions. Second operand has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 96 states have internal predecessors, (206), 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) [2022-01-31 21:50:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:56,451 INFO L93 Difference]: Finished difference Result 242 states and 258 transitions. [2022-01-31 21:50:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 21:50:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 96 states have internal predecessors, (206), 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 209 [2022-01-31 21:50:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:56,452 INFO L225 Difference]: With dead ends: 242 [2022-01-31 21:50:56,452 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 21:50:56,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 65 SyntacticMatches, 50 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10209 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1275, Invalid=35015, Unknown=0, NotChecked=0, Total=36290 [2022-01-31 21:50:56,454 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 297 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16360 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 16621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 16360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:56,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 253 Invalid, 16621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 16360 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 21:50:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 21:50:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2022-01-31 21:50:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.0240384615384615) internal successors, (213), 208 states have internal predecessors, (213), 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) [2022-01-31 21:50:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2022-01-31 21:50:56,670 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 209 [2022-01-31 21:50:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:56,671 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 216 transitions. [2022-01-31 21:50:56,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 96 states have internal predecessors, (206), 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) [2022-01-31 21:50:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 216 transitions. [2022-01-31 21:50:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-31 21:50:56,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:56,671 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:56,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 21:50:56,672 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash -604956645, now seen corresponding path program 88 times [2022-01-31 21:50:56,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:56,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811288085] [2022-01-31 21:50:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:57,166 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,199 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,314 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,357 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,396 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,429 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,471 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:50:57,518 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:50:57,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:00,215 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811288085] [2022-01-31 21:51:00,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811288085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:00,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:00,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 21:51:00,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938064298] [2022-01-31 21:51:00,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:00,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 21:51:00,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:00,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 21:51:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=9075, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 21:51:00,216 INFO L87 Difference]: Start difference. First operand 212 states and 216 transitions. Second operand has 98 states, 98 states have (on average 2.122448979591837) internal successors, (208), 97 states have internal predecessors, (208), 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) [2022-01-31 21:51:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:05,045 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2022-01-31 21:51:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 21:51:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.122448979591837) internal successors, (208), 97 states have internal predecessors, (208), 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 211 [2022-01-31 21:51:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:05,046 INFO L225 Difference]: With dead ends: 244 [2022-01-31 21:51:05,046 INFO L226 Difference]: Without dead ends: 231 [2022-01-31 21:51:05,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 76 SyntacticMatches, 40 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10098 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1287, Invalid=35769, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 21:51:05,048 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 340 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 15535 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 15842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 15535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:05,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 203 Invalid, 15842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 15535 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 21:51:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-31 21:51:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2022-01-31 21:51:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.0238095238095237) internal successors, (215), 210 states have internal predecessors, (215), 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) [2022-01-31 21:51:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 218 transitions. [2022-01-31 21:51:05,256 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 218 transitions. Word has length 211 [2022-01-31 21:51:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:05,256 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 218 transitions. [2022-01-31 21:51:05,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.122448979591837) internal successors, (208), 97 states have internal predecessors, (208), 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) [2022-01-31 21:51:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 218 transitions. [2022-01-31 21:51:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-31 21:51:05,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:05,257 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:05,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 21:51:05,257 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash -608882759, now seen corresponding path program 89 times [2022-01-31 21:51:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:05,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020173022] [2022-01-31 21:51:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:05,690 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,711 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,740 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,789 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,819 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,845 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,903 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:05,946 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:05,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:09,008 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020173022] [2022-01-31 21:51:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1020173022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:09,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:09,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 21:51:09,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409512865] [2022-01-31 21:51:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:09,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 21:51:09,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 21:51:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=9267, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 21:51:09,010 INFO L87 Difference]: Start difference. First operand 214 states and 218 transitions. Second operand has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 98 states have internal predecessors, (210), 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) [2022-01-31 21:51:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:13,942 INFO L93 Difference]: Finished difference Result 246 states and 262 transitions. [2022-01-31 21:51:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 21:51:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 98 states have internal predecessors, (210), 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 213 [2022-01-31 21:51:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:13,943 INFO L225 Difference]: With dead ends: 246 [2022-01-31 21:51:13,943 INFO L226 Difference]: Without dead ends: 233 [2022-01-31 21:51:13,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 69 SyntacticMatches, 48 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10521 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1299, Invalid=36531, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 21:51:13,945 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 312 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 15662 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 15937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 15662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:13,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 308 Invalid, 15937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 15662 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 21:51:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-31 21:51:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 216. [2022-01-31 21:51:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.0235849056603774) internal successors, (217), 212 states have internal predecessors, (217), 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) [2022-01-31 21:51:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2022-01-31 21:51:14,172 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 213 [2022-01-31 21:51:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:14,173 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2022-01-31 21:51:14,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 98 states have internal predecessors, (210), 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) [2022-01-31 21:51:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2022-01-31 21:51:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-31 21:51:14,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:14,173 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:14,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 21:51:14,173 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -86911017, now seen corresponding path program 90 times [2022-01-31 21:51:14,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033477708] [2022-01-31 21:51:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:14,595 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,616 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,644 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,666 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,688 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,761 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,789 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,849 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:14,850 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:14,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:17,825 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:17,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033477708] [2022-01-31 21:51:17,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2033477708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:17,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:17,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 21:51:17,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281095228] [2022-01-31 21:51:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 21:51:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 21:51:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=9461, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 21:51:17,827 INFO L87 Difference]: Start difference. First operand 216 states and 220 transitions. Second operand has 100 states, 100 states have (on average 2.12) internal successors, (212), 99 states have internal predecessors, (212), 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) [2022-01-31 21:51:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:23,429 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2022-01-31 21:51:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 21:51:23,429 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.12) internal successors, (212), 99 states have internal predecessors, (212), 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 215 [2022-01-31 21:51:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:23,431 INFO L225 Difference]: With dead ends: 248 [2022-01-31 21:51:23,431 INFO L226 Difference]: Without dead ends: 235 [2022-01-31 21:51:23,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 72 SyntacticMatches, 46 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10690 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1311, Invalid=37301, Unknown=0, NotChecked=0, Total=38612 [2022-01-31 21:51:23,432 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 389 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 19105 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 19465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 19105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:23,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 348 Invalid, 19465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 19105 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-31 21:51:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-31 21:51:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-01-31 21:51:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 214 states have (on average 1.0233644859813085) internal successors, (219), 214 states have internal predecessors, (219), 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) [2022-01-31 21:51:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 222 transitions. [2022-01-31 21:51:23,664 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 222 transitions. Word has length 215 [2022-01-31 21:51:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:23,664 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 222 transitions. [2022-01-31 21:51:23,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.12) internal successors, (212), 99 states have internal predecessors, (212), 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) [2022-01-31 21:51:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 222 transitions. [2022-01-31 21:51:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-31 21:51:23,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:23,665 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:23,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 21:51:23,665 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -983240587, now seen corresponding path program 91 times [2022-01-31 21:51:23,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:23,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683971312] [2022-01-31 21:51:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:24,142 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,164 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,192 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,243 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,275 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,301 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,322 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,354 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:24,415 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:24,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:28,310 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683971312] [2022-01-31 21:51:28,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1683971312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:28,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:28,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 21:51:28,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372983443] [2022-01-31 21:51:28,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 21:51:28,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 21:51:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=9657, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 21:51:28,311 INFO L87 Difference]: Start difference. First operand 218 states and 222 transitions. Second operand has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 100 states have internal predecessors, (214), 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) [2022-01-31 21:51:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:33,739 INFO L93 Difference]: Finished difference Result 252 states and 269 transitions. [2022-01-31 21:51:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 21:51:33,739 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 100 states have internal predecessors, (214), 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 217 [2022-01-31 21:51:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:33,740 INFO L225 Difference]: With dead ends: 252 [2022-01-31 21:51:33,740 INFO L226 Difference]: Without dead ends: 239 [2022-01-31 21:51:33,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 67 SyntacticMatches, 52 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11078 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1323, Invalid=38079, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 21:51:33,742 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 17593 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 17854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 17593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:33,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 138 Invalid, 17854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 17593 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-31 21:51:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-31 21:51:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2022-01-31 21:51:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.0229357798165137) internal successors, (223), 218 states have internal predecessors, (223), 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) [2022-01-31 21:51:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2022-01-31 21:51:33,985 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 217 [2022-01-31 21:51:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:33,986 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2022-01-31 21:51:33,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 100 states have internal predecessors, (214), 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) [2022-01-31 21:51:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2022-01-31 21:51:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-31 21:51:33,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:33,986 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:33,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 21:51:33,987 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:33,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 932469139, now seen corresponding path program 92 times [2022-01-31 21:51:33,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:33,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669763507] [2022-01-31 21:51:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:34,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,465 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,540 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,567 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,595 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,616 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,685 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:34,685 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:34,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:39,353 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:39,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669763507] [2022-01-31 21:51:39,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [669763507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:39,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:39,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 21:51:39,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125872546] [2022-01-31 21:51:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:39,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 21:51:39,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 21:51:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=9855, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 21:51:39,355 INFO L87 Difference]: Start difference. First operand 222 states and 226 transitions. Second operand has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 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) [2022-01-31 21:51:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:45,689 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2022-01-31 21:51:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 21:51:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 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 219 [2022-01-31 21:51:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:45,690 INFO L225 Difference]: With dead ends: 253 [2022-01-31 21:51:45,690 INFO L226 Difference]: Without dead ends: 240 [2022-01-31 21:51:45,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 68 SyntacticMatches, 52 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11205 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1335, Invalid=38865, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 21:51:45,692 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 404 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 18571 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 18946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 18571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:45,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 128 Invalid, 18946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 18571 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-31 21:51:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-01-31 21:51:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2022-01-31 21:51:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 1.0227272727272727) internal successors, (225), 220 states have internal predecessors, (225), 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) [2022-01-31 21:51:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 228 transitions. [2022-01-31 21:51:45,924 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 228 transitions. Word has length 219 [2022-01-31 21:51:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:45,924 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 228 transitions. [2022-01-31 21:51:45,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 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) [2022-01-31 21:51:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 228 transitions. [2022-01-31 21:51:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 21:51:45,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:45,926 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:45,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 21:51:45,926 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1748369914, now seen corresponding path program 93 times [2022-01-31 21:51:45,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:45,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781832536] [2022-01-31 21:51:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:46,499 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,527 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,627 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,664 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,698 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,726 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,763 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,814 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:46,814 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:46,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:51:50,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:51:50,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781832536] [2022-01-31 21:51:50,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [781832536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:51:50,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:51:50,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 21:51:50,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977234659] [2022-01-31 21:51:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:51:50,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 21:51:50,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:51:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 21:51:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=10055, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 21:51:50,887 INFO L87 Difference]: Start difference. First operand 224 states and 228 transitions. Second operand has 103 states, 103 states have (on average 2.1262135922330097) internal successors, (219), 102 states have internal predecessors, (219), 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) [2022-01-31 21:51:56,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:51:56,414 INFO L93 Difference]: Finished difference Result 255 states and 271 transitions. [2022-01-31 21:51:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 21:51:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1262135922330097) internal successors, (219), 102 states have internal predecessors, (219), 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 222 [2022-01-31 21:51:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:51:56,415 INFO L225 Difference]: With dead ends: 255 [2022-01-31 21:51:56,415 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 21:51:56,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 65 SyntacticMatches, 57 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11345 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1347, Invalid=39659, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 21:51:56,417 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 294 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 16047 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 16310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 16047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:51:56,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 73 Invalid, 16310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 16047 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 21:51:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 21:51:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 225. [2022-01-31 21:51:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 221 states have (on average 1.0226244343891402) internal successors, (226), 221 states have internal predecessors, (226), 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) [2022-01-31 21:51:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2022-01-31 21:51:56,659 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 222 [2022-01-31 21:51:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:51:56,660 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2022-01-31 21:51:56,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1262135922330097) internal successors, (219), 102 states have internal predecessors, (219), 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) [2022-01-31 21:51:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2022-01-31 21:51:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-31 21:51:56,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:51:56,661 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:51:56,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 21:51:56,661 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:51:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:51:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1785142744, now seen corresponding path program 94 times [2022-01-31 21:51:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:51:56,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029417350] [2022-01-31 21:51:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:51:57,080 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,102 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,129 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,152 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,173 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,201 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,224 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,246 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,273 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,335 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:51:57,335 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:51:57,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:51:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:51:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:51:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:52:00,719 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:00,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029417350] [2022-01-31 21:52:00,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1029417350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:00,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:00,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 21:52:00,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512387049] [2022-01-31 21:52:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:00,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 21:52:00,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 21:52:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=10257, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 21:52:00,721 INFO L87 Difference]: Start difference. First operand 225 states and 229 transitions. Second operand has 104 states, 104 states have (on average 2.125) internal successors, (221), 103 states have internal predecessors, (221), 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) [2022-01-31 21:52:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:06,054 INFO L93 Difference]: Finished difference Result 257 states and 273 transitions. [2022-01-31 21:52:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 21:52:06,054 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.125) internal successors, (221), 103 states have internal predecessors, (221), 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 224 [2022-01-31 21:52:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:06,058 INFO L225 Difference]: With dead ends: 257 [2022-01-31 21:52:06,058 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 21:52:06,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 69 SyntacticMatches, 54 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11562 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1359, Invalid=40461, Unknown=0, NotChecked=0, Total=41820 [2022-01-31 21:52:06,060 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 267 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15761 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 15991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 15761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:06,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 43 Invalid, 15991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 15761 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-31 21:52:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 21:52:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2022-01-31 21:52:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.0224215246636772) internal successors, (228), 223 states have internal predecessors, (228), 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) [2022-01-31 21:52:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-01-31 21:52:06,336 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 224 [2022-01-31 21:52:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:06,336 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-01-31 21:52:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.125) internal successors, (221), 103 states have internal predecessors, (221), 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) [2022-01-31 21:52:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-01-31 21:52:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-31 21:52:06,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:06,337 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:06,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 21:52:06,337 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1530873290, now seen corresponding path program 95 times [2022-01-31 21:52:06,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:06,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847548346] [2022-01-31 21:52:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:06,805 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,833 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,869 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,927 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,963 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:06,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:07,031 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:07,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:07,154 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:07,154 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:52:07,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:52:12,273 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847548346] [2022-01-31 21:52:12,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [847548346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:12,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:12,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 21:52:12,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824207721] [2022-01-31 21:52:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:12,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 21:52:12,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 21:52:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=10461, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 21:52:12,275 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 105 states, 105 states have (on average 2.123809523809524) internal successors, (223), 104 states have internal predecessors, (223), 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) [2022-01-31 21:52:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:20,042 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2022-01-31 21:52:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 21:52:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.123809523809524) internal successors, (223), 104 states have internal predecessors, (223), 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 226 [2022-01-31 21:52:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:20,044 INFO L225 Difference]: With dead ends: 259 [2022-01-31 21:52:20,044 INFO L226 Difference]: Without dead ends: 246 [2022-01-31 21:52:20,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 61 SyntacticMatches, 63 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12146 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1371, Invalid=41271, Unknown=0, NotChecked=0, Total=42642 [2022-01-31 21:52:20,045 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 15773 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 15999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 15773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:20,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 68 Invalid, 15999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 15773 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-31 21:52:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-31 21:52:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 229. [2022-01-31 21:52:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 225 states have (on average 1.0222222222222221) internal successors, (230), 225 states have internal predecessors, (230), 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) [2022-01-31 21:52:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2022-01-31 21:52:20,279 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 226 [2022-01-31 21:52:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:20,280 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2022-01-31 21:52:20,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.123809523809524) internal successors, (223), 104 states have internal predecessors, (223), 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) [2022-01-31 21:52:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2022-01-31 21:52:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-31 21:52:20,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:20,280 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:20,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 21:52:20,281 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1356548332, now seen corresponding path program 96 times [2022-01-31 21:52:20,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:20,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330102458] [2022-01-31 21:52:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:20,709 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,730 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,758 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,780 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,804 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,836 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,861 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,887 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,919 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,963 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:20,964 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:52:20,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:52:24,430 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330102458] [2022-01-31 21:52:24,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1330102458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:24,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:24,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 21:52:24,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933580432] [2022-01-31 21:52:24,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:24,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 21:52:24,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 21:52:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=10667, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 21:52:24,433 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 106 states, 106 states have (on average 2.1226415094339623) internal successors, (225), 105 states have internal predecessors, (225), 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) [2022-01-31 21:52:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:30,056 INFO L93 Difference]: Finished difference Result 261 states and 277 transitions. [2022-01-31 21:52:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 21:52:30,056 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.1226415094339623) internal successors, (225), 105 states have internal predecessors, (225), 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 228 [2022-01-31 21:52:30,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:30,057 INFO L225 Difference]: With dead ends: 261 [2022-01-31 21:52:30,057 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 21:52:30,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 68 SyntacticMatches, 57 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12108 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1383, Invalid=42089, Unknown=0, NotChecked=0, Total=43472 [2022-01-31 21:52:30,059 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 308 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 16943 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 17218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 16943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:30,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 93 Invalid, 17218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 16943 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 21:52:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 21:52:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 231. [2022-01-31 21:52:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0220264317180616) internal successors, (232), 227 states have internal predecessors, (232), 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) [2022-01-31 21:52:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-01-31 21:52:30,317 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 228 [2022-01-31 21:52:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:30,317 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-01-31 21:52:30,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.1226415094339623) internal successors, (225), 105 states have internal predecessors, (225), 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) [2022-01-31 21:52:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-01-31 21:52:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 21:52:30,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:30,318 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:30,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 21:52:30,318 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:30,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1333988238, now seen corresponding path program 97 times [2022-01-31 21:52:30,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786759921] [2022-01-31 21:52:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:30,759 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,781 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,834 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,910 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:30,961 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:31,026 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:31,026 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:52:31,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:52:36,357 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:36,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786759921] [2022-01-31 21:52:36,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1786759921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:36,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:36,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 21:52:36,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398403171] [2022-01-31 21:52:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:36,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 21:52:36,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 21:52:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=10875, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 21:52:36,360 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 107 states, 107 states have (on average 2.121495327102804) internal successors, (227), 106 states have internal predecessors, (227), 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) [2022-01-31 21:52:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:42,597 INFO L93 Difference]: Finished difference Result 263 states and 279 transitions. [2022-01-31 21:52:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 21:52:42,597 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.121495327102804) internal successors, (227), 106 states have internal predecessors, (227), 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 230 [2022-01-31 21:52:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:42,597 INFO L225 Difference]: With dead ends: 263 [2022-01-31 21:52:42,598 INFO L226 Difference]: Without dead ends: 250 [2022-01-31 21:52:42,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 78 SyntacticMatches, 48 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12020 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1395, Invalid=42915, Unknown=0, NotChecked=0, Total=44310 [2022-01-31 21:52:42,600 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 382 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 18748 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 19097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 18748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:42,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 103 Invalid, 19097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 18748 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 21:52:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-31 21:52:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2022-01-31 21:52:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 229 states have (on average 1.0218340611353711) internal successors, (234), 229 states have internal predecessors, (234), 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) [2022-01-31 21:52:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2022-01-31 21:52:42,854 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 230 [2022-01-31 21:52:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:42,855 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2022-01-31 21:52:42,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.121495327102804) internal successors, (227), 106 states have internal predecessors, (227), 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) [2022-01-31 21:52:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2022-01-31 21:52:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-31 21:52:42,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:42,855 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:42,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 21:52:42,856 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1128574384, now seen corresponding path program 98 times [2022-01-31 21:52:42,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:42,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405130514] [2022-01-31 21:52:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:43,296 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,317 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,366 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,387 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,438 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,506 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,557 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:43,558 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:52:43,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:52:48,804 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:48,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405130514] [2022-01-31 21:52:48,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [405130514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:48,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:48,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 21:52:48,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75248924] [2022-01-31 21:52:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:48,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 21:52:48,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 21:52:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=11085, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 21:52:48,807 INFO L87 Difference]: Start difference. First operand 233 states and 237 transitions. Second operand has 108 states, 108 states have (on average 2.1203703703703702) internal successors, (229), 107 states have internal predecessors, (229), 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) [2022-01-31 21:52:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:55,783 INFO L93 Difference]: Finished difference Result 267 states and 284 transitions. [2022-01-31 21:52:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 21:52:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.1203703703703702) internal successors, (229), 107 states have internal predecessors, (229), 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 232 [2022-01-31 21:52:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:55,784 INFO L225 Difference]: With dead ends: 267 [2022-01-31 21:52:55,784 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 21:52:55,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 86 SyntacticMatches, 41 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12250 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1407, Invalid=43749, Unknown=0, NotChecked=0, Total=45156 [2022-01-31 21:52:55,786 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 315 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 19847 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 20130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 19847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:55,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 63 Invalid, 20130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 19847 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 21:52:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 21:52:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 237. [2022-01-31 21:52:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 233 states have (on average 1.0214592274678111) internal successors, (238), 233 states have internal predecessors, (238), 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) [2022-01-31 21:52:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2022-01-31 21:52:56,061 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 232 [2022-01-31 21:52:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:56,061 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2022-01-31 21:52:56,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.1203703703703702) internal successors, (229), 107 states have internal predecessors, (229), 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) [2022-01-31 21:52:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2022-01-31 21:52:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 21:52:56,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:56,062 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:56,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 21:52:56,062 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:56,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:56,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1294356306, now seen corresponding path program 99 times [2022-01-31 21:52:56,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:56,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772780931] [2022-01-31 21:52:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:56,521 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,543 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,572 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,594 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,616 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,667 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,688 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,718 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,776 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:52:56,776 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:52:56,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:53:01,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:53:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772780931] [2022-01-31 21:53:01,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [772780931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:53:01,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:53:01,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 21:53:01,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064765088] [2022-01-31 21:53:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:53:01,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 21:53:01,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:53:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 21:53:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=11297, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 21:53:01,330 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 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) [2022-01-31 21:53:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:53:09,238 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2022-01-31 21:53:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 21:53:09,238 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 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 234 [2022-01-31 21:53:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:53:09,239 INFO L225 Difference]: With dead ends: 268 [2022-01-31 21:53:09,239 INFO L226 Difference]: Without dead ends: 255 [2022-01-31 21:53:09,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 75 SyntacticMatches, 53 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12609 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1419, Invalid=44591, Unknown=0, NotChecked=0, Total=46010 [2022-01-31 21:53:09,241 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 380 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19827 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 20179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 19827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:53:09,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 33 Invalid, 20179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 19827 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 21:53:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-01-31 21:53:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 239. [2022-01-31 21:53:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.0212765957446808) internal successors, (240), 235 states have internal predecessors, (240), 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) [2022-01-31 21:53:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2022-01-31 21:53:09,507 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 234 [2022-01-31 21:53:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:53:09,507 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2022-01-31 21:53:09,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 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) [2022-01-31 21:53:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2022-01-31 21:53:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-31 21:53:09,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:53:09,508 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:53:09,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 21:53:09,508 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:53:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:53:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1838575361, now seen corresponding path program 100 times [2022-01-31 21:53:09,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:53:09,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788764235] [2022-01-31 21:53:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:53:09,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:09,977 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,006 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,115 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,138 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,167 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,217 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:10,217 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:53:10,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:53:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:53:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:53:14,233 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:53:14,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788764235] [2022-01-31 21:53:14,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [788764235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:53:14,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:53:14,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 21:53:14,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816160809] [2022-01-31 21:53:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:53:14,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 21:53:14,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:53:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 21:53:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=11511, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 21:53:14,234 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand has 110 states, 110 states have (on average 2.1272727272727274) internal successors, (234), 109 states have internal predecessors, (234), 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) [2022-01-31 21:53:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:53:22,884 INFO L93 Difference]: Finished difference Result 270 states and 286 transitions. [2022-01-31 21:53:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 21:53:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.1272727272727274) internal successors, (234), 109 states have internal predecessors, (234), 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 237 [2022-01-31 21:53:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:53:22,885 INFO L225 Difference]: With dead ends: 270 [2022-01-31 21:53:22,885 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 21:53:22,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 82 SyntacticMatches, 48 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12677 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1431, Invalid=45441, Unknown=0, NotChecked=0, Total=46872 [2022-01-31 21:53:22,887 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 308 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19661 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 19940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 19661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:53:22,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 193 Invalid, 19940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 19661 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-31 21:53:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 21:53:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 240. [2022-01-31 21:53:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.021186440677966) internal successors, (241), 236 states have internal predecessors, (241), 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) [2022-01-31 21:53:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 244 transitions. [2022-01-31 21:53:23,171 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 244 transitions. Word has length 237 [2022-01-31 21:53:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:53:23,172 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 244 transitions. [2022-01-31 21:53:23,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.1272727272727274) internal successors, (234), 109 states have internal predecessors, (234), 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) [2022-01-31 21:53:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 244 transitions. [2022-01-31 21:53:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-31 21:53:23,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:53:23,172 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:53:23,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 21:53:23,173 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:53:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:53:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -705495139, now seen corresponding path program 101 times [2022-01-31 21:53:23,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:53:23,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727094060] [2022-01-31 21:53:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:53:23,905 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:23,947 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:23,995 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,035 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,073 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,158 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,194 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,240 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,300 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:24,300 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:53:24,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:53:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:53:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:53:27,878 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:53:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727094060] [2022-01-31 21:53:27,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727094060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:53:27,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:53:27,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 21:53:27,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162101264] [2022-01-31 21:53:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:53:27,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 21:53:27,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:53:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 21:53:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=11727, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 21:53:27,879 INFO L87 Difference]: Start difference. First operand 240 states and 244 transitions. Second operand has 111 states, 111 states have (on average 2.126126126126126) internal successors, (236), 110 states have internal predecessors, (236), 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) [2022-01-31 21:53:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:53:35,027 INFO L93 Difference]: Finished difference Result 272 states and 288 transitions. [2022-01-31 21:53:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 21:53:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.126126126126126) internal successors, (236), 110 states have internal predecessors, (236), 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 239 [2022-01-31 21:53:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:53:35,031 INFO L225 Difference]: With dead ends: 272 [2022-01-31 21:53:35,031 INFO L226 Difference]: Without dead ends: 259 [2022-01-31 21:53:35,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 79 SyntacticMatches, 52 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12892 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1443, Invalid=46299, Unknown=0, NotChecked=0, Total=47742 [2022-01-31 21:53:35,033 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 394 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 20513 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 20877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 20513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:53:35,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 198 Invalid, 20877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 20513 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 21:53:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-31 21:53:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2022-01-31 21:53:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.0210084033613445) internal successors, (243), 238 states have internal predecessors, (243), 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) [2022-01-31 21:53:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2022-01-31 21:53:35,300 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 239 [2022-01-31 21:53:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:53:35,301 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2022-01-31 21:53:35,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.126126126126126) internal successors, (236), 110 states have internal predecessors, (236), 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) [2022-01-31 21:53:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2022-01-31 21:53:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-31 21:53:35,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:53:35,302 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:53:35,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 21:53:35,302 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:53:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:53:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1557872315, now seen corresponding path program 102 times [2022-01-31 21:53:35,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:53:35,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379188715] [2022-01-31 21:53:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:53:36,059 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,136 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,183 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,217 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,262 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,303 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:36,443 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:53:36,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:53:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:53:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:53:40,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:53:40,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379188715] [2022-01-31 21:53:40,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [379188715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:53:40,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:53:40,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 21:53:40,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703099230] [2022-01-31 21:53:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:53:40,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 21:53:40,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:53:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 21:53:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=11945, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 21:53:40,319 INFO L87 Difference]: Start difference. First operand 242 states and 246 transitions. Second operand has 112 states, 112 states have (on average 2.125) internal successors, (238), 111 states have internal predecessors, (238), 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) [2022-01-31 21:53:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:53:46,551 INFO L93 Difference]: Finished difference Result 274 states and 290 transitions. [2022-01-31 21:53:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 21:53:46,552 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.125) internal successors, (238), 111 states have internal predecessors, (238), 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 241 [2022-01-31 21:53:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:53:46,552 INFO L225 Difference]: With dead ends: 274 [2022-01-31 21:53:46,552 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 21:53:46,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 71 SyntacticMatches, 61 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13469 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1455, Invalid=47165, Unknown=0, NotChecked=0, Total=48620 [2022-01-31 21:53:46,554 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 283 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 18559 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 18807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 18559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:53:46,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 108 Invalid, 18807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 18559 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-31 21:53:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 21:53:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 244. [2022-01-31 21:53:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 1.0208333333333333) internal successors, (245), 240 states have internal predecessors, (245), 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) [2022-01-31 21:53:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2022-01-31 21:53:46,823 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 241 [2022-01-31 21:53:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:53:46,823 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2022-01-31 21:53:46,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.125) internal successors, (238), 111 states have internal predecessors, (238), 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) [2022-01-31 21:53:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2022-01-31 21:53:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-31 21:53:46,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:53:46,824 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:53:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 21:53:46,824 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:53:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:53:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -894423463, now seen corresponding path program 103 times [2022-01-31 21:53:46,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:53:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647763256] [2022-01-31 21:53:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:53:47,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,303 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,361 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,387 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,418 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,475 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,559 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:47,560 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:53:47,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:53:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:53:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:53:51,413 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:53:51,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647763256] [2022-01-31 21:53:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [647763256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:53:51,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:53:51,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 21:53:51,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850558841] [2022-01-31 21:53:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:53:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 21:53:51,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:53:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 21:53:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=12165, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 21:53:51,415 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 113 states, 113 states have (on average 2.1238938053097347) internal successors, (240), 112 states have internal predecessors, (240), 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) [2022-01-31 21:53:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:53:58,017 INFO L93 Difference]: Finished difference Result 276 states and 292 transitions. [2022-01-31 21:53:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 21:53:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.1238938053097347) internal successors, (240), 112 states have internal predecessors, (240), 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 243 [2022-01-31 21:53:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:53:58,018 INFO L225 Difference]: With dead ends: 276 [2022-01-31 21:53:58,018 INFO L226 Difference]: Without dead ends: 263 [2022-01-31 21:53:58,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 74 SyntacticMatches, 59 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13584 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1467, Invalid=48039, Unknown=0, NotChecked=0, Total=49506 [2022-01-31 21:53:58,020 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 385 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 20231 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 20589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 20231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:53:58,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 113 Invalid, 20589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 20231 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-31 21:53:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-01-31 21:53:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 246. [2022-01-31 21:53:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.0206611570247934) internal successors, (247), 242 states have internal predecessors, (247), 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) [2022-01-31 21:53:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 250 transitions. [2022-01-31 21:53:58,328 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 250 transitions. Word has length 243 [2022-01-31 21:53:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:53:58,328 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 250 transitions. [2022-01-31 21:53:58,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.1238938053097347) internal successors, (240), 112 states have internal predecessors, (240), 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) [2022-01-31 21:53:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 250 transitions. [2022-01-31 21:53:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-31 21:53:58,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:53:58,329 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:53:58,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 21:53:58,329 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:53:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:53:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash 386379383, now seen corresponding path program 104 times [2022-01-31 21:53:58,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:53:58,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465930868] [2022-01-31 21:53:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:53:58,847 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,868 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,919 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,941 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,970 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:58,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:59,014 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:59,043 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:59,091 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:53:59,091 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:53:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:53:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:53:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:53:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:54:04,858 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:54:04,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465930868] [2022-01-31 21:54:04,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1465930868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:54:04,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:54:04,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 21:54:04,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932028131] [2022-01-31 21:54:04,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:54:04,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 21:54:04,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:54:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 21:54:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=12387, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 21:54:04,860 INFO L87 Difference]: Start difference. First operand 246 states and 250 transitions. Second operand has 114 states, 114 states have (on average 2.1228070175438596) internal successors, (242), 113 states have internal predecessors, (242), 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) [2022-01-31 21:54:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:54:14,423 INFO L93 Difference]: Finished difference Result 278 states and 294 transitions. [2022-01-31 21:54:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 21:54:14,423 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1228070175438596) internal successors, (242), 113 states have internal predecessors, (242), 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 245 [2022-01-31 21:54:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:54:14,424 INFO L225 Difference]: With dead ends: 278 [2022-01-31 21:54:14,424 INFO L226 Difference]: Without dead ends: 265 [2022-01-31 21:54:14,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 69 SyntacticMatches, 65 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13941 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1479, Invalid=48921, Unknown=0, NotChecked=0, Total=50400 [2022-01-31 21:54:14,426 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 315 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 23534 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 23821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 23534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:54:14,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 258 Invalid, 23821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 23534 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-31 21:54:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-31 21:54:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 248. [2022-01-31 21:54:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.0204918032786885) internal successors, (249), 244 states have internal predecessors, (249), 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) [2022-01-31 21:54:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 252 transitions. [2022-01-31 21:54:14,726 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 252 transitions. Word has length 245 [2022-01-31 21:54:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:54:14,726 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 252 transitions. [2022-01-31 21:54:14,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1228070175438596) internal successors, (242), 113 states have internal predecessors, (242), 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) [2022-01-31 21:54:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 252 transitions. [2022-01-31 21:54:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-31 21:54:14,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:14,727 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:14,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 21:54:14,727 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1417699563, now seen corresponding path program 105 times [2022-01-31 21:54:14,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:14,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135419671] [2022-01-31 21:54:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:15,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,327 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,436 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,480 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,530 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,588 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,668 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,745 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:15,745 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:54:15,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:54:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:54:20,828 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:54:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135419671] [2022-01-31 21:54:20,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1135419671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:54:20,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:54:20,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 21:54:20,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414042663] [2022-01-31 21:54:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:54:20,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 21:54:20,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:54:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 21:54:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=12611, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 21:54:20,830 INFO L87 Difference]: Start difference. First operand 248 states and 252 transitions. Second operand has 115 states, 115 states have (on average 2.121739130434783) internal successors, (244), 114 states have internal predecessors, (244), 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) [2022-01-31 21:54:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:54:27,333 INFO L93 Difference]: Finished difference Result 282 states and 299 transitions. [2022-01-31 21:54:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 21:54:27,333 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.121739130434783) internal successors, (244), 114 states have internal predecessors, (244), 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 247 [2022-01-31 21:54:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:54:27,334 INFO L225 Difference]: With dead ends: 282 [2022-01-31 21:54:27,334 INFO L226 Difference]: Without dead ends: 269 [2022-01-31 21:54:27,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 81 SyntacticMatches, 54 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13914 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1491, Invalid=49811, Unknown=0, NotChecked=0, Total=51302 [2022-01-31 21:54:27,337 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 283 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 20607 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 20858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 20607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:54:27,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 163 Invalid, 20858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 20607 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-31 21:54:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-31 21:54:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2022-01-31 21:54:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.0201612903225807) internal successors, (253), 248 states have internal predecessors, (253), 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) [2022-01-31 21:54:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 256 transitions. [2022-01-31 21:54:27,636 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 256 transitions. Word has length 247 [2022-01-31 21:54:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:54:27,637 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 256 transitions. [2022-01-31 21:54:27,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.121739130434783) internal successors, (244), 114 states have internal predecessors, (244), 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) [2022-01-31 21:54:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 256 transitions. [2022-01-31 21:54:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-31 21:54:27,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:27,637 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:27,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 21:54:27,638 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 29220915, now seen corresponding path program 106 times [2022-01-31 21:54:27,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:27,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926839209] [2022-01-31 21:54:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:28,153 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,181 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,216 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,243 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,271 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,307 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,419 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:28,473 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:54:28,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:54:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:54:34,636 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:54:34,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926839209] [2022-01-31 21:54:34,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1926839209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:54:34,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:54:34,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 21:54:34,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796791128] [2022-01-31 21:54:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:54:34,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 21:54:34,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:54:34,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 21:54:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=12837, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 21:54:34,638 INFO L87 Difference]: Start difference. First operand 252 states and 256 transitions. Second operand has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 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) [2022-01-31 21:54:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:54:42,623 INFO L93 Difference]: Finished difference Result 283 states and 299 transitions. [2022-01-31 21:54:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 21:54:42,623 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 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 249 [2022-01-31 21:54:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:54:42,624 INFO L225 Difference]: With dead ends: 283 [2022-01-31 21:54:42,624 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 21:54:42,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 67 SyntacticMatches, 69 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14419 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1503, Invalid=50709, Unknown=0, NotChecked=0, Total=52212 [2022-01-31 21:54:42,626 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 335 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21596 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 21901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 21596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:54:42,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 53 Invalid, 21901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 21596 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 21:54:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 21:54:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 254. [2022-01-31 21:54:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.02) internal successors, (255), 250 states have internal predecessors, (255), 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) [2022-01-31 21:54:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 258 transitions. [2022-01-31 21:54:42,932 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 258 transitions. Word has length 249 [2022-01-31 21:54:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:54:42,932 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 258 transitions. [2022-01-31 21:54:42,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 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) [2022-01-31 21:54:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 258 transitions. [2022-01-31 21:54:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-31 21:54:42,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:42,933 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:42,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 21:54:42,933 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1050638170, now seen corresponding path program 107 times [2022-01-31 21:54:42,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:42,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861703774] [2022-01-31 21:54:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:43,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,513 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,536 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,587 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,609 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,637 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,687 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:43,687 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:54:43,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:54:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:54:48,929 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:54:48,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861703774] [2022-01-31 21:54:48,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [861703774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:54:48,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:54:48,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 21:54:48,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429784103] [2022-01-31 21:54:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:54:48,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 21:54:48,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:54:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 21:54:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=13065, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 21:54:48,931 INFO L87 Difference]: Start difference. First operand 254 states and 258 transitions. Second operand has 117 states, 117 states have (on average 2.128205128205128) internal successors, (249), 116 states have internal predecessors, (249), 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) [2022-01-31 21:54:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:54:58,099 INFO L93 Difference]: Finished difference Result 285 states and 301 transitions. [2022-01-31 21:54:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 21:54:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.128205128205128) internal successors, (249), 116 states have internal predecessors, (249), 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 252 [2022-01-31 21:54:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:54:58,100 INFO L225 Difference]: With dead ends: 285 [2022-01-31 21:54:58,100 INFO L226 Difference]: Without dead ends: 272 [2022-01-31 21:54:58,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 77 SyntacticMatches, 61 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14540 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1515, Invalid=51615, Unknown=0, NotChecked=0, Total=53130 [2022-01-31 21:54:58,103 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 358 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 24984 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 25316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 24984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:54:58,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 428 Invalid, 25316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 24984 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-31 21:54:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-31 21:54:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-01-31 21:54:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.0199203187250996) internal successors, (256), 251 states have internal predecessors, (256), 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) [2022-01-31 21:54:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2022-01-31 21:54:58,412 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 252 [2022-01-31 21:54:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:54:58,412 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2022-01-31 21:54:58,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.128205128205128) internal successors, (249), 116 states have internal predecessors, (249), 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) [2022-01-31 21:54:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2022-01-31 21:54:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 21:54:58,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:58,413 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:58,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 21:54:58,413 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1279834936, now seen corresponding path program 108 times [2022-01-31 21:54:58,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:58,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854309101] [2022-01-31 21:54:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:59,127 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,149 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,242 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,314 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,342 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,391 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:54:59,391 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:54:59,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:54:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:55:05,279 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:55:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854309101] [2022-01-31 21:55:05,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [854309101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:55:05,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:55:05,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 21:55:05,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235845080] [2022-01-31 21:55:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:55:05,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 21:55:05,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:55:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 21:55:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=13295, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 21:55:05,281 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand has 118 states, 118 states have (on average 2.1271186440677967) internal successors, (251), 117 states have internal predecessors, (251), 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) [2022-01-31 21:55:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:55:14,407 INFO L93 Difference]: Finished difference Result 287 states and 303 transitions. [2022-01-31 21:55:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 21:55:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.1271186440677967) internal successors, (251), 117 states have internal predecessors, (251), 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 254 [2022-01-31 21:55:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:55:14,407 INFO L225 Difference]: With dead ends: 287 [2022-01-31 21:55:14,407 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 21:55:14,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 78 SyntacticMatches, 61 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14623 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1527, Invalid=52529, Unknown=0, NotChecked=0, Total=54056 [2022-01-31 21:55:14,410 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 399 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 23519 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 23895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 23519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:55:14,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 93 Invalid, 23895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 23519 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-01-31 21:55:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 21:55:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2022-01-31 21:55:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.0197628458498025) internal successors, (258), 253 states have internal predecessors, (258), 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) [2022-01-31 21:55:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2022-01-31 21:55:14,716 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 254 [2022-01-31 21:55:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:55:14,716 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2022-01-31 21:55:14,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.1271186440677967) internal successors, (251), 117 states have internal predecessors, (251), 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) [2022-01-31 21:55:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2022-01-31 21:55:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-31 21:55:14,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:55:14,717 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:55:14,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 21:55:14,717 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:55:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:55:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1800372330, now seen corresponding path program 109 times [2022-01-31 21:55:14,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:55:14,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661579023] [2022-01-31 21:55:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:55:15,136 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,183 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,204 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,273 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,294 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,325 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:15,375 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:55:15,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:55:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:55:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:55:19,211 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:55:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661579023] [2022-01-31 21:55:19,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1661579023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:55:19,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:55:19,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 21:55:19,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800608154] [2022-01-31 21:55:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:55:19,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 21:55:19,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:55:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 21:55:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=13527, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 21:55:19,213 INFO L87 Difference]: Start difference. First operand 257 states and 261 transitions. Second operand has 119 states, 119 states have (on average 2.1260504201680672) internal successors, (253), 118 states have internal predecessors, (253), 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) [2022-01-31 21:55:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:55:26,578 INFO L93 Difference]: Finished difference Result 289 states and 305 transitions. [2022-01-31 21:55:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 21:55:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.1260504201680672) internal successors, (253), 118 states have internal predecessors, (253), 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 256 [2022-01-31 21:55:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:55:26,579 INFO L225 Difference]: With dead ends: 289 [2022-01-31 21:55:26,579 INFO L226 Difference]: Without dead ends: 276 [2022-01-31 21:55:26,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 84 SyntacticMatches, 56 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14568 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1539, Invalid=53451, Unknown=0, NotChecked=0, Total=54990 [2022-01-31 21:55:26,581 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 417 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 25443 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 25834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 25443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:55:26,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 328 Invalid, 25834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 25443 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-31 21:55:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-31 21:55:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2022-01-31 21:55:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 255 states have (on average 1.0196078431372548) internal successors, (260), 255 states have internal predecessors, (260), 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) [2022-01-31 21:55:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2022-01-31 21:55:26,896 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 256 [2022-01-31 21:55:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:55:26,896 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions. [2022-01-31 21:55:26,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.1260504201680672) internal successors, (253), 118 states have internal predecessors, (253), 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) [2022-01-31 21:55:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions. [2022-01-31 21:55:26,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-31 21:55:26,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:55:26,897 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:55:26,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 21:55:26,897 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:55:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:55:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1647879284, now seen corresponding path program 110 times [2022-01-31 21:55:26,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:55:26,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090747164] [2022-01-31 21:55:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:55:27,322 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,397 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,418 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,445 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,572 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:27,572 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:55:27,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:55:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:55:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:55:31,481 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:55:31,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090747164] [2022-01-31 21:55:31,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2090747164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:55:31,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:55:31,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 21:55:31,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911258097] [2022-01-31 21:55:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:55:31,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 21:55:31,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:55:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 21:55:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=13761, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 21:55:31,483 INFO L87 Difference]: Start difference. First operand 259 states and 263 transitions. Second operand has 120 states, 120 states have (on average 2.125) internal successors, (255), 119 states have internal predecessors, (255), 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) [2022-01-31 21:55:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:55:38,294 INFO L93 Difference]: Finished difference Result 291 states and 307 transitions. [2022-01-31 21:55:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 21:55:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.125) internal successors, (255), 119 states have internal predecessors, (255), 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 258 [2022-01-31 21:55:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:55:38,295 INFO L225 Difference]: With dead ends: 291 [2022-01-31 21:55:38,295 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 21:55:38,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 90 SyntacticMatches, 51 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14757 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1551, Invalid=54381, Unknown=0, NotChecked=0, Total=55932 [2022-01-31 21:55:38,298 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 299 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 21551 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 21817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 21551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:55:38,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 58 Invalid, 21817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 21551 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-31 21:55:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 21:55:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 261. [2022-01-31 21:55:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.0194552529182879) internal successors, (262), 257 states have internal predecessors, (262), 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) [2022-01-31 21:55:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2022-01-31 21:55:38,625 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 258 [2022-01-31 21:55:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:55:38,626 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2022-01-31 21:55:38,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.125) internal successors, (255), 119 states have internal predecessors, (255), 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) [2022-01-31 21:55:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2022-01-31 21:55:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-31 21:55:38,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:55:38,627 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:55:38,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 21:55:38,628 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:55:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:55:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -297072174, now seen corresponding path program 111 times [2022-01-31 21:55:38,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:55:38,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850633421] [2022-01-31 21:55:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:55:39,248 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,295 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,317 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,339 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,369 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,390 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,414 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:39,505 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:55:39,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:55:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:55:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:55:45,133 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:55:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850633421] [2022-01-31 21:55:45,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [850633421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:55:45,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:55:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 21:55:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892870208] [2022-01-31 21:55:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:55:45,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 21:55:45,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:55:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 21:55:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=13997, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 21:55:45,135 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand has 121 states, 121 states have (on average 2.12396694214876) internal successors, (257), 120 states have internal predecessors, (257), 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) [2022-01-31 21:55:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:55:52,354 INFO L93 Difference]: Finished difference Result 293 states and 309 transitions. [2022-01-31 21:55:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 21:55:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.12396694214876) internal successors, (257), 120 states have internal predecessors, (257), 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 260 [2022-01-31 21:55:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:55:52,355 INFO L225 Difference]: With dead ends: 293 [2022-01-31 21:55:52,355 INFO L226 Difference]: Without dead ends: 280 [2022-01-31 21:55:52,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 85 SyntacticMatches, 57 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15026 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1563, Invalid=55319, Unknown=0, NotChecked=0, Total=56882 [2022-01-31 21:55:52,358 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 423 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 23118 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 23118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:55:52,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 68 Invalid, 23515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 23118 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 21:55:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-31 21:55:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-01-31 21:55:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.0193050193050193) internal successors, (264), 259 states have internal predecessors, (264), 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) [2022-01-31 21:55:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-01-31 21:55:52,673 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 260 [2022-01-31 21:55:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:55:52,674 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-01-31 21:55:52,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.12396694214876) internal successors, (257), 120 states have internal predecessors, (257), 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) [2022-01-31 21:55:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-01-31 21:55:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-31 21:55:52,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:55:52,674 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:55:52,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 21:55:52,675 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:55:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:55:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1084649552, now seen corresponding path program 112 times [2022-01-31 21:55:52,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:55:52,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76682050] [2022-01-31 21:55:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:55:53,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,241 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,287 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,322 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,356 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:55:53,579 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:55:53,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:55:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:55:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:55:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:55:59,581 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:55:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76682050] [2022-01-31 21:55:59,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [76682050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:55:59,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:55:59,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 21:55:59,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729343841] [2022-01-31 21:55:59,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:55:59,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 21:55:59,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:55:59,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 21:55:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=14235, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 21:55:59,584 INFO L87 Difference]: Start difference. First operand 263 states and 267 transitions. Second operand has 122 states, 122 states have (on average 2.122950819672131) internal successors, (259), 121 states have internal predecessors, (259), 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) [2022-01-31 21:56:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:56:07,406 INFO L93 Difference]: Finished difference Result 297 states and 314 transitions. [2022-01-31 21:56:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 21:56:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.122950819672131) internal successors, (259), 121 states have internal predecessors, (259), 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 262 [2022-01-31 21:56:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:56:07,407 INFO L225 Difference]: With dead ends: 297 [2022-01-31 21:56:07,407 INFO L226 Difference]: Without dead ends: 284 [2022-01-31 21:56:07,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 88 SyntacticMatches, 55 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15365 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1575, Invalid=56265, Unknown=0, NotChecked=0, Total=57840 [2022-01-31 21:56:07,409 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 375 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 24968 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 25318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 24968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:56:07,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 283 Invalid, 25318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 24968 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-01-31 21:56:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-31 21:56:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2022-01-31 21:56:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 263 states have (on average 1.0190114068441065) internal successors, (268), 263 states have internal predecessors, (268), 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) [2022-01-31 21:56:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2022-01-31 21:56:07,731 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 262 [2022-01-31 21:56:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:56:07,731 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 271 transitions. [2022-01-31 21:56:07,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.122950819672131) internal successors, (259), 121 states have internal predecessors, (259), 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) [2022-01-31 21:56:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 271 transitions. [2022-01-31 21:56:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 21:56:07,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:56:07,732 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:56:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 21:56:07,732 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:56:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:56:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2032265714, now seen corresponding path program 113 times [2022-01-31 21:56:07,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:56:07,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308523517] [2022-01-31 21:56:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:56:08,163 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,185 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,213 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,234 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,256 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,285 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,307 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,329 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,357 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,409 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:08,409 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:56:08,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:56:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:56:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:56:13,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:56:13,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308523517] [2022-01-31 21:56:13,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1308523517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:56:13,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:56:13,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 21:56:13,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454354316] [2022-01-31 21:56:13,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:56:13,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 21:56:13,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:56:13,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 21:56:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=14475, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 21:56:13,600 INFO L87 Difference]: Start difference. First operand 267 states and 271 transitions. Second operand has 123 states, 123 states have (on average 2.1219512195121952) internal successors, (261), 122 states have internal predecessors, (261), 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) [2022-01-31 21:56:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:56:21,910 INFO L93 Difference]: Finished difference Result 298 states and 314 transitions. [2022-01-31 21:56:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 21:56:21,911 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.1219512195121952) internal successors, (261), 122 states have internal predecessors, (261), 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 264 [2022-01-31 21:56:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:56:21,911 INFO L225 Difference]: With dead ends: 298 [2022-01-31 21:56:21,911 INFO L226 Difference]: Without dead ends: 285 [2022-01-31 21:56:21,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 83 SyntacticMatches, 61 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15923 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1587, Invalid=57219, Unknown=0, NotChecked=0, Total=58806 [2022-01-31 21:56:21,914 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 459 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28381 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 28822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 28381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-31 21:56:21,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 158 Invalid, 28822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 28381 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-31 21:56:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-31 21:56:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 269. [2022-01-31 21:56:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 1.0188679245283019) internal successors, (270), 265 states have internal predecessors, (270), 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) [2022-01-31 21:56:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2022-01-31 21:56:22,241 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 264 [2022-01-31 21:56:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:56:22,241 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2022-01-31 21:56:22,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.1219512195121952) internal successors, (261), 122 states have internal predecessors, (261), 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) [2022-01-31 21:56:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2022-01-31 21:56:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-31 21:56:22,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:56:22,242 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:56:22,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 21:56:22,243 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:56:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:56:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1039839135, now seen corresponding path program 114 times [2022-01-31 21:56:22,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:56:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790558792] [2022-01-31 21:56:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:56:22,678 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,700 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,753 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,817 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:22,929 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:23,014 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:23,015 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:56:23,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:56:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:56:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:56:27,833 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:56:27,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790558792] [2022-01-31 21:56:27,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1790558792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:56:27,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:56:27,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 21:56:27,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85584502] [2022-01-31 21:56:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:56:27,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 21:56:27,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:56:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 21:56:27,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=14717, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 21:56:27,835 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 123 states have internal predecessors, (264), 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) [2022-01-31 21:56:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:56:35,795 INFO L93 Difference]: Finished difference Result 300 states and 316 transitions. [2022-01-31 21:56:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 21:56:35,796 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 123 states have internal predecessors, (264), 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 267 [2022-01-31 21:56:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:56:35,796 INFO L225 Difference]: With dead ends: 300 [2022-01-31 21:56:35,796 INFO L226 Difference]: Without dead ends: 287 [2022-01-31 21:56:35,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 78 SyntacticMatches, 68 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16172 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1599, Invalid=58181, Unknown=0, NotChecked=0, Total=59780 [2022-01-31 21:56:35,798 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 343 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 26848 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 27165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 26848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:56:35,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 248 Invalid, 27165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 26848 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 21:56:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-31 21:56:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 270. [2022-01-31 21:56:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 1.018796992481203) internal successors, (271), 266 states have internal predecessors, (271), 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) [2022-01-31 21:56:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions. [2022-01-31 21:56:36,141 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 267 [2022-01-31 21:56:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:56:36,141 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 274 transitions. [2022-01-31 21:56:36,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 123 states have internal predecessors, (264), 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) [2022-01-31 21:56:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 274 transitions. [2022-01-31 21:56:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-31 21:56:36,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:56:36,142 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:56:36,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 21:56:36,142 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:56:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:56:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash -508103107, now seen corresponding path program 115 times [2022-01-31 21:56:36,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:56:36,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116881536] [2022-01-31 21:56:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:56:36,638 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,663 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,725 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,751 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,784 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,838 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,865 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,917 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:36,917 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:56:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:56:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:56:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:56:41,500 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:56:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116881536] [2022-01-31 21:56:41,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1116881536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:56:41,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:56:41,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 21:56:41,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802749361] [2022-01-31 21:56:41,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:56:41,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 21:56:41,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:56:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 21:56:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=14961, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 21:56:41,502 INFO L87 Difference]: Start difference. First operand 270 states and 274 transitions. Second operand has 125 states, 125 states have (on average 2.128) internal successors, (266), 124 states have internal predecessors, (266), 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) [2022-01-31 21:56:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:56:49,604 INFO L93 Difference]: Finished difference Result 302 states and 318 transitions. [2022-01-31 21:56:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 21:56:49,604 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.128) internal successors, (266), 124 states have internal predecessors, (266), 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 269 [2022-01-31 21:56:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:56:49,604 INFO L225 Difference]: With dead ends: 302 [2022-01-31 21:56:49,604 INFO L226 Difference]: Without dead ends: 289 [2022-01-31 21:56:49,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 86 SyntacticMatches, 61 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1611, Invalid=59151, Unknown=0, NotChecked=0, Total=60762 [2022-01-31 21:56:49,607 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 338 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 27916 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 28229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 27916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:56:49,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 283 Invalid, 28229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 27916 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-31 21:56:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-31 21:56:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 272. [2022-01-31 21:56:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 1.0186567164179106) internal successors, (273), 268 states have internal predecessors, (273), 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) [2022-01-31 21:56:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2022-01-31 21:56:49,937 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 269 [2022-01-31 21:56:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:56:49,937 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 276 transitions. [2022-01-31 21:56:49,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.128) internal successors, (266), 124 states have internal predecessors, (266), 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) [2022-01-31 21:56:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 276 transitions. [2022-01-31 21:56:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-31 21:56:49,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:56:49,938 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:56:49,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 21:56:49,938 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:56:49,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:56:49,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2021913253, now seen corresponding path program 116 times [2022-01-31 21:56:49,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:56:49,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776959360] [2022-01-31 21:56:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:56:50,365 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,387 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,415 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,440 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,489 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,513 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,534 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,562 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,614 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:56:50,614 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:56:50,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:56:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:56:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:56:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:56:55,394 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:56:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776959360] [2022-01-31 21:56:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [776959360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:56:55,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:56:55,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 21:56:55,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110591105] [2022-01-31 21:56:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:56:55,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 21:56:55,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:56:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 21:56:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=15207, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 21:56:55,396 INFO L87 Difference]: Start difference. First operand 272 states and 276 transitions. Second operand has 126 states, 126 states have (on average 2.126984126984127) internal successors, (268), 125 states have internal predecessors, (268), 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) [2022-01-31 21:57:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:57:06,839 INFO L93 Difference]: Finished difference Result 304 states and 320 transitions. [2022-01-31 21:57:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 21:57:06,840 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.126984126984127) internal successors, (268), 125 states have internal predecessors, (268), 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 271 [2022-01-31 21:57:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:57:06,840 INFO L225 Difference]: With dead ends: 304 [2022-01-31 21:57:06,840 INFO L226 Difference]: Without dead ends: 291 [2022-01-31 21:57:06,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 74 SyntacticMatches, 74 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16529 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1623, Invalid=60129, Unknown=0, NotChecked=0, Total=61752 [2022-01-31 21:57:06,842 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 339 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 28286 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 28601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 28286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:57:06,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 338 Invalid, 28601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 28286 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-31 21:57:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-01-31 21:57:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 274. [2022-01-31 21:57:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 270 states have (on average 1.0185185185185186) internal successors, (275), 270 states have internal predecessors, (275), 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) [2022-01-31 21:57:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 278 transitions. [2022-01-31 21:57:07,186 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 278 transitions. Word has length 271 [2022-01-31 21:57:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:57:07,186 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 278 transitions. [2022-01-31 21:57:07,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.126984126984127) internal successors, (268), 125 states have internal predecessors, (268), 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) [2022-01-31 21:57:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 278 transitions. [2022-01-31 21:57:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-31 21:57:07,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:57:07,187 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:57:07,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 21:57:07,188 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:57:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:57:07,188 INFO L85 PathProgramCache]: Analyzing trace with hash -799550215, now seen corresponding path program 117 times [2022-01-31 21:57:07,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:57:07,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733023916] [2022-01-31 21:57:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:57:07,902 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:07,936 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:07,981 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,022 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,057 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,144 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,179 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,223 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,286 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:08,286 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:57:08,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:57:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:57:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:57:13,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:57:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733023916] [2022-01-31 21:57:13,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [733023916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:57:13,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:57:13,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 21:57:13,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144057388] [2022-01-31 21:57:13,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:57:13,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 21:57:13,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:57:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 21:57:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=15455, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 21:57:13,524 INFO L87 Difference]: Start difference. First operand 274 states and 278 transitions. Second operand has 127 states, 127 states have (on average 2.125984251968504) internal successors, (270), 126 states have internal predecessors, (270), 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) [2022-01-31 21:57:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:57:21,557 INFO L93 Difference]: Finished difference Result 306 states and 322 transitions. [2022-01-31 21:57:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 21:57:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.125984251968504) internal successors, (270), 126 states have internal predecessors, (270), 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 273 [2022-01-31 21:57:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:57:21,558 INFO L225 Difference]: With dead ends: 306 [2022-01-31 21:57:21,558 INFO L226 Difference]: Without dead ends: 293 [2022-01-31 21:57:21,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 90 SyntacticMatches, 59 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16514 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1635, Invalid=61115, Unknown=0, NotChecked=0, Total=62750 [2022-01-31 21:57:21,561 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 358 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 27226 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 27555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 27226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 21:57:21,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 253 Invalid, 27555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 27226 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 21:57:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-01-31 21:57:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 276. [2022-01-31 21:57:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.0183823529411764) internal successors, (277), 272 states have internal predecessors, (277), 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) [2022-01-31 21:57:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2022-01-31 21:57:21,908 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 273 [2022-01-31 21:57:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:57:21,908 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2022-01-31 21:57:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.125984251968504) internal successors, (270), 126 states have internal predecessors, (270), 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) [2022-01-31 21:57:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2022-01-31 21:57:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-31 21:57:21,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:57:21,909 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:57:21,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 21:57:21,909 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:57:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:57:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1365257495, now seen corresponding path program 118 times [2022-01-31 21:57:21,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:57:21,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534747687] [2022-01-31 21:57:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:57:22,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,406 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,427 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,454 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,479 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,500 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,527 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:22,631 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:57:22,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:57:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:57:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:57:28,064 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:57:28,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534747687] [2022-01-31 21:57:28,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1534747687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:57:28,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:57:28,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 21:57:28,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653284547] [2022-01-31 21:57:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:57:28,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 21:57:28,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:57:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 21:57:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=15705, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 21:57:28,066 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 128 states, 128 states have (on average 2.125) internal successors, (272), 127 states have internal predecessors, (272), 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) [2022-01-31 21:57:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:57:35,804 INFO L93 Difference]: Finished difference Result 308 states and 324 transitions. [2022-01-31 21:57:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 21:57:35,804 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.125) internal successors, (272), 127 states have internal predecessors, (272), 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 275 [2022-01-31 21:57:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:57:35,805 INFO L225 Difference]: With dead ends: 308 [2022-01-31 21:57:35,805 INFO L226 Difference]: Without dead ends: 295 [2022-01-31 21:57:35,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 87 SyntacticMatches, 63 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16783 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1647, Invalid=62109, Unknown=0, NotChecked=0, Total=63756 [2022-01-31 21:57:35,807 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 400 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 25132 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 25506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 25132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:57:35,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 88 Invalid, 25506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 25132 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-31 21:57:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-01-31 21:57:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2022-01-31 21:57:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 1.0182481751824817) internal successors, (279), 274 states have internal predecessors, (279), 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) [2022-01-31 21:57:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 282 transitions. [2022-01-31 21:57:36,244 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 282 transitions. Word has length 275 [2022-01-31 21:57:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:57:36,244 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 282 transitions. [2022-01-31 21:57:36,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.125) internal successors, (272), 127 states have internal predecessors, (272), 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) [2022-01-31 21:57:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 282 transitions. [2022-01-31 21:57:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-31 21:57:36,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:57:36,245 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:57:36,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 21:57:36,245 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:57:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:57:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1313671755, now seen corresponding path program 119 times [2022-01-31 21:57:36,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:57:36,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562178178] [2022-01-31 21:57:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:57:36,736 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,761 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,822 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,844 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,872 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,897 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,944 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,996 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:36,997 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:57:36,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:57:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:57:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:57:41,661 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:57:41,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562178178] [2022-01-31 21:57:41,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562178178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:57:41,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:57:41,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 21:57:41,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000313660] [2022-01-31 21:57:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:57:41,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 21:57:41,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:57:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 21:57:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=15957, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 21:57:41,663 INFO L87 Difference]: Start difference. First operand 278 states and 282 transitions. Second operand has 129 states, 129 states have (on average 2.124031007751938) internal successors, (274), 128 states have internal predecessors, (274), 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) [2022-01-31 21:57:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:57:51,078 INFO L93 Difference]: Finished difference Result 312 states and 329 transitions. [2022-01-31 21:57:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 21:57:51,079 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.124031007751938) internal successors, (274), 128 states have internal predecessors, (274), 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 277 [2022-01-31 21:57:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:57:51,079 INFO L225 Difference]: With dead ends: 312 [2022-01-31 21:57:51,079 INFO L226 Difference]: Without dead ends: 299 [2022-01-31 21:57:51,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 85 SyntacticMatches, 66 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17252 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1659, Invalid=63111, Unknown=0, NotChecked=0, Total=64770 [2022-01-31 21:57:51,082 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 320 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 26055 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 26345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 26055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-31 21:57:51,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 123 Invalid, 26345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 26055 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-01-31 21:57:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-31 21:57:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 282. [2022-01-31 21:57:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.0179856115107915) internal successors, (283), 278 states have internal predecessors, (283), 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) [2022-01-31 21:57:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 286 transitions. [2022-01-31 21:57:51,435 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 286 transitions. Word has length 277 [2022-01-31 21:57:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:57:51,435 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 286 transitions. [2022-01-31 21:57:51,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.124031007751938) internal successors, (274), 128 states have internal predecessors, (274), 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) [2022-01-31 21:57:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 286 transitions. [2022-01-31 21:57:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-01-31 21:57:51,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:57:51,436 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 17, 17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:57:51,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 21:57:51,436 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:57:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:57:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1215696595, now seen corresponding path program 120 times [2022-01-31 21:57:51,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:57:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432868881] [2022-01-31 21:57:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:57:51,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,034 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,055 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,106 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,126 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,147 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:57:52,229 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:57:52,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:57:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:57:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:57:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:57:56,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:57:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432868881] [2022-01-31 21:57:56,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432868881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:57:56,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:57:56,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 21:57:56,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891320559] [2022-01-31 21:57:56,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:57:56,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 21:57:56,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:57:56,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 21:57:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=16211, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 21:57:56,853 INFO L87 Difference]: Start difference. First operand 282 states and 286 transitions. Second operand has 130 states, 130 states have (on average 2.123076923076923) internal successors, (276), 129 states have internal predecessors, (276), 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) [2022-01-31 21:58:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:58:05,600 INFO L93 Difference]: Finished difference Result 313 states and 329 transitions. [2022-01-31 21:58:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 21:58:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.123076923076923) internal successors, (276), 129 states have internal predecessors, (276), 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 279 [2022-01-31 21:58:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:58:05,601 INFO L225 Difference]: With dead ends: 313 [2022-01-31 21:58:05,601 INFO L226 Difference]: Without dead ends: 300 [2022-01-31 21:58:05,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 95 SyntacticMatches, 57 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17099 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1671, Invalid=64121, Unknown=0, NotChecked=0, Total=65792 [2022-01-31 21:58:05,604 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 496 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30799 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 30799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-31 21:58:05,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 23 Invalid, 31276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 30799 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-31 21:58:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-31 21:58:05,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 284. [2022-01-31 21:58:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.0178571428571428) internal successors, (285), 280 states have internal predecessors, (285), 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) [2022-01-31 21:58:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 288 transitions. [2022-01-31 21:58:05,969 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 288 transitions. Word has length 279 [2022-01-31 21:58:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:58:05,969 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 288 transitions. [2022-01-31 21:58:05,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.123076923076923) internal successors, (276), 129 states have internal predecessors, (276), 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) [2022-01-31 21:58:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 288 transitions. [2022-01-31 21:58:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-31 21:58:05,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:58:05,970 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 18, 18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:58:05,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 21:58:05,970 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:58:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:58:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash -233225030, now seen corresponding path program 121 times [2022-01-31 21:58:05,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:58:05,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580706895] [2022-01-31 21:58:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:58:06,457 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,525 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,546 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,595 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,618 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,647 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,701 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:06,701 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:58:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:58:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:58:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:58:11,621 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:58:11,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580706895] [2022-01-31 21:58:11,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1580706895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:58:11,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:58:11,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 21:58:11,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858321520] [2022-01-31 21:58:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:58:11,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 21:58:11,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:58:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 21:58:11,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=16467, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 21:58:11,623 INFO L87 Difference]: Start difference. First operand 284 states and 288 transitions. Second operand has 131 states, 131 states have (on average 2.1297709923664123) internal successors, (279), 130 states have internal predecessors, (279), 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) [2022-01-31 21:58:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:58:20,554 INFO L93 Difference]: Finished difference Result 315 states and 331 transitions. [2022-01-31 21:58:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 21:58:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.1297709923664123) internal successors, (279), 130 states have internal predecessors, (279), 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 282 [2022-01-31 21:58:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:58:20,555 INFO L225 Difference]: With dead ends: 315 [2022-01-31 21:58:20,555 INFO L226 Difference]: Without dead ends: 302 [2022-01-31 21:58:20,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 85 SyntacticMatches, 69 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17619 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1683, Invalid=65139, Unknown=0, NotChecked=0, Total=66822 [2022-01-31 21:58:20,558 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 321 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 26294 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 26586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 26294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-31 21:58:20,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 148 Invalid, 26586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 26294 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-01-31 21:58:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-31 21:58:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 285. [2022-01-31 21:58:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 1.0177935943060499) internal successors, (286), 281 states have internal predecessors, (286), 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) [2022-01-31 21:58:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2022-01-31 21:58:20,939 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 282 [2022-01-31 21:58:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:58:20,939 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2022-01-31 21:58:20,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.1297709923664123) internal successors, (279), 130 states have internal predecessors, (279), 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) [2022-01-31 21:58:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2022-01-31 21:58:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-31 21:58:20,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:58:20,940 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 18, 18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:58:20,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 21:58:20,940 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:58:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:58:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash 142913688, now seen corresponding path program 122 times [2022-01-31 21:58:20,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:58:20,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876110986] [2022-01-31 21:58:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:58:21,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,403 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,428 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,453 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,474 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,500 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,524 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,637 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,700 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:21,700 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:58:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:58:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:58:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:58:26,545 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:58:26,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876110986] [2022-01-31 21:58:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [876110986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:58:26,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:58:26,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 21:58:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026210530] [2022-01-31 21:58:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:58:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 21:58:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:58:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 21:58:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=16725, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 21:58:26,547 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand has 132 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 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) [2022-01-31 21:58:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:58:36,703 INFO L93 Difference]: Finished difference Result 317 states and 333 transitions. [2022-01-31 21:58:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 21:58:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 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 284 [2022-01-31 21:58:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:58:36,704 INFO L225 Difference]: With dead ends: 317 [2022-01-31 21:58:36,705 INFO L226 Difference]: Without dead ends: 304 [2022-01-31 21:58:36,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 92 SyntacticMatches, 63 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17681 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1695, Invalid=66165, Unknown=0, NotChecked=0, Total=67860 [2022-01-31 21:58:36,707 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 487 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 32398 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 32869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 32398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-31 21:58:36,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 63 Invalid, 32869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 32398 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-01-31 21:58:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-31 21:58:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 287. [2022-01-31 21:58:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 283 states have (on average 1.017667844522968) internal successors, (288), 283 states have internal predecessors, (288), 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) [2022-01-31 21:58:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2022-01-31 21:58:37,064 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 284 [2022-01-31 21:58:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:58:37,064 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2022-01-31 21:58:37,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 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) [2022-01-31 21:58:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2022-01-31 21:58:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-31 21:58:37,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:58:37,065 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 18, 18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:58:37,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 21:58:37,066 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:58:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:58:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash 834968822, now seen corresponding path program 123 times [2022-01-31 21:58:37,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:58:37,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448501812] [2022-01-31 21:58:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:58:37,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,524 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,549 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,594 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,644 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,665 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,690 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,744 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:37,744 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:58:37,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:58:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:58:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:58:44,311 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:58:44,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448501812] [2022-01-31 21:58:44,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [448501812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:58:44,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:58:44,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 21:58:44,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809081825] [2022-01-31 21:58:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:58:44,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 21:58:44,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:58:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 21:58:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=16985, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 21:58:44,314 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 133 states, 133 states have (on average 2.1278195488721803) internal successors, (283), 132 states have internal predecessors, (283), 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) [2022-01-31 21:58:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:58:54,163 INFO L93 Difference]: Finished difference Result 319 states and 335 transitions. [2022-01-31 21:58:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 21:58:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.1278195488721803) internal successors, (283), 132 states have internal predecessors, (283), 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 286 [2022-01-31 21:58:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:58:54,165 INFO L225 Difference]: With dead ends: 319 [2022-01-31 21:58:54,165 INFO L226 Difference]: Without dead ends: 306 [2022-01-31 21:58:54,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 90 SyntacticMatches, 66 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18288 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1707, Invalid=67199, Unknown=0, NotChecked=0, Total=68906 [2022-01-31 21:58:54,167 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 362 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 31553 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 31890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 31553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:58:54,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 208 Invalid, 31890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 31553 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-31 21:58:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-31 21:58:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 289. [2022-01-31 21:58:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 1.0175438596491229) internal successors, (290), 285 states have internal predecessors, (290), 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) [2022-01-31 21:58:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 293 transitions. [2022-01-31 21:58:54,538 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 293 transitions. Word has length 286 [2022-01-31 21:58:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:58:54,539 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 293 transitions. [2022-01-31 21:58:54,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.1278195488721803) internal successors, (283), 132 states have internal predecessors, (283), 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) [2022-01-31 21:58:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 293 transitions. [2022-01-31 21:58:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-31 21:58:54,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:58:54,540 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 18, 18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:58:54,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 21:58:54,540 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:58:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:58:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash 180021716, now seen corresponding path program 124 times [2022-01-31 21:58:54,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:58:54,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852359691] [2022-01-31 21:58:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:58:54,957 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:54,977 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,003 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,026 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,046 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,072 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,096 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,116 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,142 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,199 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:58:55,200 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:58:55,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:58:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:58:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:58:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:59:00,213 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:59:00,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852359691] [2022-01-31 21:59:00,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852359691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:59:00,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:59:00,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 21:59:00,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948081970] [2022-01-31 21:59:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:59:00,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 21:59:00,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:59:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 21:59:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=17247, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 21:59:00,215 INFO L87 Difference]: Start difference. First operand 289 states and 293 transitions. Second operand has 134 states, 134 states have (on average 2.126865671641791) internal successors, (285), 133 states have internal predecessors, (285), 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)