/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-6c470ae [2022-02-15 02:18:12,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:18:12,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:18:12,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:18:12,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 02:18:12,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:18:12,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:18:12,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:18:12,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:18:12,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:18:12,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:18:12,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:18:12,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:18:12,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:18:12,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:18:12,890 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:18:12,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:18:13,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:18:13,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:18:13,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:18:13,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:18:13,142 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:18:13,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_5.c [2022-02-15 02:18:13,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83089c6b6/9fc79363b7554c3f8e504a2401a84d31/FLAG2620fdc13 [2022-02-15 02:18:13,619 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:18:13,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_5.c [2022-02-15 02:18:13,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83089c6b6/9fc79363b7554c3f8e504a2401a84d31/FLAG2620fdc13 [2022-02-15 02:18:13,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83089c6b6/9fc79363b7554c3f8e504a2401a84d31 [2022-02-15 02:18:13,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:18:13,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:18:13,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:18:13,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:18:13,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:18:13,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a9d5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13, skipping insertion in model container [2022-02-15 02:18:13,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:18:13,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:18:13,829 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] [2022-02-15 02:18:13,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:18:13,839 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:18:13,851 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] [2022-02-15 02:18:13,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:18:13,860 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:18:13,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13 WrapperNode [2022-02-15 02:18:13,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:18:13,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:18:13,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:18:13,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:18:13,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:18:13,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:18:13,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:18:13,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:18:13,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (1/1) ... [2022-02-15 02:18:13,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:18:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:18:13,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 02:18:13,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 02:18:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:18:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:18:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:18:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:18:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:18:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:18:14,027 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:18:14,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:18:14,166 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:18:14,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:18:14,171 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-02-15 02:18:14,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:18:14 BoogieIcfgContainer [2022-02-15 02:18:14,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:18:14,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:18:14,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:18:14,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:18:14,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:18:13" (1/3) ... [2022-02-15 02:18:14,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0ddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:18:14, skipping insertion in model container [2022-02-15 02:18:14,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:13" (2/3) ... [2022-02-15 02:18:14,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0ddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:18:14, skipping insertion in model container [2022-02-15 02:18:14,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:18:14" (3/3) ... [2022-02-15 02:18:14,184 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_5.c [2022-02-15 02:18:14,191 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:18:14,191 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:18:14,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:18:14,255 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-15 02:18:14,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:18:14,293 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) [2022-02-15 02:18:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 02:18:14,300 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:14,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:14,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1327885715, now seen corresponding path program 1 times [2022-02-15 02:18:14,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:14,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019461356] [2022-02-15 02:18:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:14,379 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:14,492 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:14,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019461356] [2022-02-15 02:18:14,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019461356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:14,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:14,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 02:18:14,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407982412] [2022-02-15 02:18:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:14,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 02:18:14,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 02:18:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 02:18:14,527 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) [2022-02-15 02:18:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:14,569 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2022-02-15 02:18:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 02:18:14,572 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 [2022-02-15 02:18:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:14,583 INFO L225 Difference]: With dead ends: 42 [2022-02-15 02:18:14,584 INFO L226 Difference]: Without dead ends: 19 [2022-02-15 02:18:14,586 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 [2022-02-15 02:18:14,590 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 [2022-02-15 02:18:14,591 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] [2022-02-15 02:18:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-15 02:18:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-02-15 02:18:14,618 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) [2022-02-15 02:18:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-02-15 02:18:14,621 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-02-15 02:18:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:14,621 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-02-15 02:18:14,621 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) [2022-02-15 02:18:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-02-15 02:18:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 02:18:14,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:14,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:14,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:18:14,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1327937609, now seen corresponding path program 1 times [2022-02-15 02:18:14,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:14,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019469251] [2022-02-15 02:18:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:14,625 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:14,688 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:14,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019469251] [2022-02-15 02:18:14,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2019469251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:14,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:14,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:18:14,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185036859] [2022-02-15 02:18:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:14,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:18:14,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:18:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:18:14,690 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) [2022-02-15 02:18:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:14,745 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-02-15 02:18:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:18:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-02-15 02:18:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:14,747 INFO L225 Difference]: With dead ends: 32 [2022-02-15 02:18:14,748 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 02:18:14,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:18:14,749 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 [2022-02-15 02:18:14,749 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] [2022-02-15 02:18:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 02:18:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-02-15 02:18:14,755 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) [2022-02-15 02:18:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-02-15 02:18:14,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2022-02-15 02:18:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:14,756 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-02-15 02:18:14,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-02-15 02:18:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 02:18:14,757 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:14,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:14,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:18:14,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 365342218, now seen corresponding path program 1 times [2022-02-15 02:18:14,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:14,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793294990] [2022-02-15 02:18:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:14,828 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,829 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:14,926 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:14,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793294990] [2022-02-15 02:18:14,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793294990] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:14,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:14,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 02:18:14,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034337654] [2022-02-15 02:18:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:14,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 02:18:14,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 02:18:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:18:14,928 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) [2022-02-15 02:18:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,023 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-02-15 02:18:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 02:18:15,023 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 [2022-02-15 02:18:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,026 INFO L225 Difference]: With dead ends: 50 [2022-02-15 02:18:15,026 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 02:18:15,027 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 [2022-02-15 02:18:15,033 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 [2022-02-15 02:18:15,035 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] [2022-02-15 02:18:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 02:18:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2022-02-15 02:18:15,045 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) [2022-02-15 02:18:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-02-15 02:18:15,047 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2022-02-15 02:18:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,047 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-02-15 02:18:15,047 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) [2022-02-15 02:18:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-02-15 02:18:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 02:18:15,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:18:15,048 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash -903990269, now seen corresponding path program 1 times [2022-02-15 02:18:15,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229666151] [2022-02-15 02:18:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,111 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:15,190 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:15,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229666151] [2022-02-15 02:18:15,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [229666151] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:15,190 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:15,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 02:18:15,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183600225] [2022-02-15 02:18:15,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:15,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 02:18:15,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:15,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 02:18:15,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 02:18:15,193 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) [2022-02-15 02:18:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,291 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2022-02-15 02:18:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 02:18:15,292 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 [2022-02-15 02:18:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,292 INFO L225 Difference]: With dead ends: 56 [2022-02-15 02:18:15,292 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 02:18:15,293 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 [2022-02-15 02:18:15,293 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:15,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 24 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 02:18:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 22. [2022-02-15 02:18:15,298 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) [2022-02-15 02:18:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-02-15 02:18:15,298 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-02-15 02:18:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,299 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-02-15 02:18:15,299 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) [2022-02-15 02:18:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-02-15 02:18:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 02:18:15,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:18:15,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 761147182, now seen corresponding path program 1 times [2022-02-15 02:18:15,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499687762] [2022-02-15 02:18:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,327 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,357 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,357 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:15,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:15,464 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:15,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499687762] [2022-02-15 02:18:15,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [499687762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:15,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:15,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 02:18:15,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560622710] [2022-02-15 02:18:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:15,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 02:18:15,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 02:18:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:18:15,468 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) [2022-02-15 02:18:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,579 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2022-02-15 02:18:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 02:18:15,580 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 [2022-02-15 02:18:15,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,581 INFO L225 Difference]: With dead ends: 60 [2022-02-15 02:18:15,581 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 02:18:15,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:18:15,583 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:15,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 22 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 02:18:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 23. [2022-02-15 02:18:15,593 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) [2022-02-15 02:18:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-02-15 02:18:15,599 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2022-02-15 02:18:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,599 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-02-15 02:18:15,600 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) [2022-02-15 02:18:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-02-15 02:18:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 02:18:15,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:18:15,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 317096575, now seen corresponding path program 1 times [2022-02-15 02:18:15,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629048093] [2022-02-15 02:18:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,629 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,643 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,708 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,748 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,748 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:15,815 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:15,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629048093] [2022-02-15 02:18:15,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629048093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:15,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:15,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 02:18:15,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689696362] [2022-02-15 02:18:15,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:15,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 02:18:15,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:15,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 02:18:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 02:18:15,817 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) [2022-02-15 02:18:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,929 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-02-15 02:18:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 02:18:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 02:18:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,930 INFO L225 Difference]: With dead ends: 62 [2022-02-15 02:18:15,930 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 02:18:15,931 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 [2022-02-15 02:18:15,932 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 [2022-02-15 02:18:15,932 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] [2022-02-15 02:18:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 02:18:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2022-02-15 02:18:15,937 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) [2022-02-15 02:18:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-02-15 02:18:15,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2022-02-15 02:18:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,938 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-02-15 02:18:15,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-02-15 02:18:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 02:18:15,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,939 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] [2022-02-15 02:18:15,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:18:15,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 720998685, now seen corresponding path program 1 times [2022-02-15 02:18:15,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018716849] [2022-02-15 02:18:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,992 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 6 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,166 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,198 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 6 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,256 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:16,339 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:16,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018716849] [2022-02-15 02:18:16,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1018716849] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:16,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:16,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 02:18:16,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832057593] [2022-02-15 02:18:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:16,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 02:18:16,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 02:18:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:18:16,341 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) [2022-02-15 02:18:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:16,467 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-02-15 02:18:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 02:18:16,467 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 [2022-02-15 02:18:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:16,468 INFO L225 Difference]: With dead ends: 64 [2022-02-15 02:18:16,468 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 02:18:16,468 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 [2022-02-15 02:18:16,469 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 [2022-02-15 02:18:16,469 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] [2022-02-15 02:18:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 02:18:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 26. [2022-02-15 02:18:16,474 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) [2022-02-15 02:18:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-02-15 02:18:16,474 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2022-02-15 02:18:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:16,475 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-02-15 02:18:16,475 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) [2022-02-15 02:18:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-02-15 02:18:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 02:18:16,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:16,475 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] [2022-02-15 02:18:16,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:18:16,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1971097541, now seen corresponding path program 2 times [2022-02-15 02:18:16,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:16,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154403845] [2022-02-15 02:18:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:16,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,552 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,613 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,662 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,662 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:16,766 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:16,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154403845] [2022-02-15 02:18:16,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1154403845] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:16,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:16,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 02:18:16,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359599799] [2022-02-15 02:18:16,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:16,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 02:18:16,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 02:18:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-15 02:18:16,768 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) [2022-02-15 02:18:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:16,956 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2022-02-15 02:18:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 02:18:16,956 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 [2022-02-15 02:18:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:16,957 INFO L225 Difference]: With dead ends: 66 [2022-02-15 02:18:16,957 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 02:18:16,958 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 [2022-02-15 02:18:16,958 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 [2022-02-15 02:18:16,958 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] [2022-02-15 02:18:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 02:18:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2022-02-15 02:18:16,967 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) [2022-02-15 02:18:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-02-15 02:18:16,968 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 25 [2022-02-15 02:18:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:16,968 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-02-15 02:18:16,968 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) [2022-02-15 02:18:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-02-15 02:18:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 02:18:16,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:16,968 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] [2022-02-15 02:18:16,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:18:16,969 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash 789708761, now seen corresponding path program 3 times [2022-02-15 02:18:16,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:16,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240239933] [2022-02-15 02:18:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:17,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,069 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,111 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,153 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,196 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,196 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:17,305 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:17,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240239933] [2022-02-15 02:18:17,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [240239933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:17,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:17,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 02:18:17,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699851091] [2022-02-15 02:18:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:17,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 02:18:17,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 02:18:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:18:17,306 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) [2022-02-15 02:18:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:17,491 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2022-02-15 02:18:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 02:18:17,491 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 [2022-02-15 02:18:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:17,492 INFO L225 Difference]: With dead ends: 68 [2022-02-15 02:18:17,492 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 02:18:17,492 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 [2022-02-15 02:18:17,492 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 [2022-02-15 02:18:17,493 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] [2022-02-15 02:18:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 02:18:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2022-02-15 02:18:17,498 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) [2022-02-15 02:18:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-02-15 02:18:17,498 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 27 [2022-02-15 02:18:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:17,498 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-02-15 02:18:17,499 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) [2022-02-15 02:18:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-02-15 02:18:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 02:18:17,499 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:17,499 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] [2022-02-15 02:18:17,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:18:17,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash -365223945, now seen corresponding path program 4 times [2022-02-15 02:18:17,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:17,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600633327] [2022-02-15 02:18:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:17,552 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,687 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:17,799 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:17,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600633327] [2022-02-15 02:18:17,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1600633327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:17,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:17,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 02:18:17,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780591927] [2022-02-15 02:18:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:17,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 02:18:17,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 02:18:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-15 02:18:17,801 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) [2022-02-15 02:18:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:17,979 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2022-02-15 02:18:17,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 02:18:17,979 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 [2022-02-15 02:18:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:17,980 INFO L225 Difference]: With dead ends: 70 [2022-02-15 02:18:17,980 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 02:18:17,981 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 [2022-02-15 02:18:17,981 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 [2022-02-15 02:18:17,982 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] [2022-02-15 02:18:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 02:18:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2022-02-15 02:18:17,990 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) [2022-02-15 02:18:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-02-15 02:18:17,991 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 29 [2022-02-15 02:18:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:17,991 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-02-15 02:18:17,991 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) [2022-02-15 02:18:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-02-15 02:18:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 02:18:17,992 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:17,992 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] [2022-02-15 02:18:17,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:18:17,992 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2140975253, now seen corresponding path program 5 times [2022-02-15 02:18:17,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:17,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907692209] [2022-02-15 02:18:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:18,048 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,115 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,188 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:18,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:18,346 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:18,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907692209] [2022-02-15 02:18:18,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [907692209] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:18,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:18,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 02:18:18,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765110866] [2022-02-15 02:18:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:18,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 02:18:18,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 02:18:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:18:18,348 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) [2022-02-15 02:18:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:18,594 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2022-02-15 02:18:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 02:18:18,594 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 [2022-02-15 02:18:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:18,595 INFO L225 Difference]: With dead ends: 72 [2022-02-15 02:18:18,595 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 02:18:18,595 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 [2022-02-15 02:18:18,596 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 [2022-02-15 02:18:18,596 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] [2022-02-15 02:18:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 02:18:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-02-15 02:18:18,602 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) [2022-02-15 02:18:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-02-15 02:18:18,602 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 31 [2022-02-15 02:18:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:18,602 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-02-15 02:18:18,602 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) [2022-02-15 02:18:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-02-15 02:18:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 02:18:18,603 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:18,603 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] [2022-02-15 02:18:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:18:18,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1121751475, now seen corresponding path program 6 times [2022-02-15 02:18:18,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:18,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182799783] [2022-02-15 02:18:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:18,705 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,748 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,786 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,869 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:19,060 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:19,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182799783] [2022-02-15 02:18:19,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1182799783] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:19,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:19,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 02:18:19,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121543951] [2022-02-15 02:18:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:19,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 02:18:19,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 02:18:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:18:19,062 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) [2022-02-15 02:18:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:19,400 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2022-02-15 02:18:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 02:18:19,401 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 [2022-02-15 02:18:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:19,401 INFO L225 Difference]: With dead ends: 72 [2022-02-15 02:18:19,401 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 02:18:19,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:18:19,403 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:19,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 29 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 02:18:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 38. [2022-02-15 02:18:19,419 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) [2022-02-15 02:18:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-02-15 02:18:19,420 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 33 [2022-02-15 02:18:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:19,422 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-02-15 02:18:19,422 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) [2022-02-15 02:18:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-02-15 02:18:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 02:18:19,426 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:19,426 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] [2022-02-15 02:18:19,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:18:19,426 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:19,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1366382042, now seen corresponding path program 7 times [2022-02-15 02:18:19,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:19,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407243244] [2022-02-15 02:18:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:19,556 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,627 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,671 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,699 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,897 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,951 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,951 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:19,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:20,197 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:20,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407243244] [2022-02-15 02:18:20,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [407243244] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:20,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:20,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:18:20,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023164957] [2022-02-15 02:18:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:20,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:18:20,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:18:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:18:20,199 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) [2022-02-15 02:18:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:20,515 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-02-15 02:18:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:18:20,516 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 [2022-02-15 02:18:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:20,516 INFO L225 Difference]: With dead ends: 74 [2022-02-15 02:18:20,516 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 02:18:20,517 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 [2022-02-15 02:18:20,517 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 [2022-02-15 02:18:20,518 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] [2022-02-15 02:18:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 02:18:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2022-02-15 02:18:20,528 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) [2022-02-15 02:18:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-15 02:18:20,528 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 36 [2022-02-15 02:18:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:20,528 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-15 02:18:20,529 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) [2022-02-15 02:18:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-15 02:18:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 02:18:20,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:20,529 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] [2022-02-15 02:18:20,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:18:20,529 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -232982088, now seen corresponding path program 8 times [2022-02-15 02:18:20,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:20,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294513245] [2022-02-15 02:18:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:20,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,724 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,799 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,840 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,043 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,043 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:21,296 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:21,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294513245] [2022-02-15 02:18:21,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1294513245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:21,297 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:21,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:18:21,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063063342] [2022-02-15 02:18:21,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:21,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:18:21,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:18:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:18:21,298 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) [2022-02-15 02:18:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:21,679 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-02-15 02:18:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:18:21,679 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 [2022-02-15 02:18:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:21,680 INFO L225 Difference]: With dead ends: 76 [2022-02-15 02:18:21,680 INFO L226 Difference]: Without dead ends: 63 [2022-02-15 02:18:21,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:18:21,681 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:21,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 44 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-15 02:18:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2022-02-15 02:18:21,693 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) [2022-02-15 02:18:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-02-15 02:18:21,695 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 38 [2022-02-15 02:18:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:21,695 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-02-15 02:18:21,696 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) [2022-02-15 02:18:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-02-15 02:18:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 02:18:21,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:21,699 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] [2022-02-15 02:18:21,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:18:21,699 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:21,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash 376380950, now seen corresponding path program 9 times [2022-02-15 02:18:21,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:21,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591360297] [2022-02-15 02:18:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:21,848 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,924 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,954 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,073 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,109 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,169 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:22,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:22,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591360297] [2022-02-15 02:18:22,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1591360297] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:22,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:22,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 02:18:22,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901876757] [2022-02-15 02:18:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:22,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 02:18:22,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 02:18:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-02-15 02:18:22,459 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) [2022-02-15 02:18:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:22,841 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-02-15 02:18:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 02:18:22,841 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 [2022-02-15 02:18:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:22,842 INFO L225 Difference]: With dead ends: 78 [2022-02-15 02:18:22,842 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 02:18:22,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:18:22,843 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:22,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 44 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 02:18:22,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2022-02-15 02:18:22,853 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) [2022-02-15 02:18:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-02-15 02:18:22,853 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 40 [2022-02-15 02:18:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:22,853 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-02-15 02:18:22,853 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) [2022-02-15 02:18:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-02-15 02:18:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 02:18:22,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:22,854 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] [2022-02-15 02:18:22,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:18:22,854 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1858708212, now seen corresponding path program 10 times [2022-02-15 02:18:22,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:22,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918818933] [2022-02-15 02:18:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:22,973 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,001 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,107 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,134 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,177 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,205 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,247 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:23,541 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:23,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918818933] [2022-02-15 02:18:23,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [918818933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:23,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:23,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 02:18:23,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529343967] [2022-02-15 02:18:23,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:23,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 02:18:23,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 02:18:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:18:23,543 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) [2022-02-15 02:18:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:23,977 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2022-02-15 02:18:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:18:23,978 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 [2022-02-15 02:18:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:23,978 INFO L225 Difference]: With dead ends: 80 [2022-02-15 02:18:23,978 INFO L226 Difference]: Without dead ends: 67 [2022-02-15 02:18:23,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:18:23,979 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 [2022-02-15 02:18:23,980 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] [2022-02-15 02:18:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-15 02:18:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2022-02-15 02:18:23,995 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) [2022-02-15 02:18:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-02-15 02:18:23,998 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 42 [2022-02-15 02:18:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-02-15 02:18:23,998 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) [2022-02-15 02:18:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-02-15 02:18:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-15 02:18:23,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:23,999 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] [2022-02-15 02:18:23,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:18:23,999 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:23,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash 446064722, now seen corresponding path program 11 times [2022-02-15 02:18:24,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:24,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437240904] [2022-02-15 02:18:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:24,153 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,238 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,271 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,320 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,353 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,407 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,441 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,494 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:24,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:24,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437240904] [2022-02-15 02:18:24,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1437240904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:24,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:24,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:18:24,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311863929] [2022-02-15 02:18:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:24,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:18:24,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:18:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:18:24,812 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) [2022-02-15 02:18:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:25,235 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2022-02-15 02:18:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:18:25,236 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 [2022-02-15 02:18:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:25,236 INFO L225 Difference]: With dead ends: 82 [2022-02-15 02:18:25,237 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 02:18:25,237 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 [2022-02-15 02:18:25,237 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-02-15 02:18:25,238 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] [2022-02-15 02:18:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 02:18:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2022-02-15 02:18:25,252 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) [2022-02-15 02:18:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-02-15 02:18:25,252 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 44 [2022-02-15 02:18:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:25,253 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-02-15 02:18:25,253 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) [2022-02-15 02:18:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-02-15 02:18:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 02:18:25,253 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:25,253 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] [2022-02-15 02:18:25,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:18:25,253 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:25,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash 105336368, now seen corresponding path program 12 times [2022-02-15 02:18:25,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:25,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582251635] [2022-02-15 02:18:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:25,389 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,464 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,499 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,577 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,653 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,696 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,696 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:26,019 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:26,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582251635] [2022-02-15 02:18:26,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [582251635] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:26,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:26,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:18:26,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107929537] [2022-02-15 02:18:26,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:26,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:18:26,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:18:26,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:18:26,020 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) [2022-02-15 02:18:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:26,452 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2022-02-15 02:18:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:18:26,452 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 [2022-02-15 02:18:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:26,452 INFO L225 Difference]: With dead ends: 86 [2022-02-15 02:18:26,452 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 02:18:26,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=276, Invalid=1206, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:18:26,453 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-02-15 02:18:26,454 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] [2022-02-15 02:18:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 02:18:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2022-02-15 02:18:26,466 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) [2022-02-15 02:18:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-02-15 02:18:26,466 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 46 [2022-02-15 02:18:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:26,467 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-02-15 02:18:26,467 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) [2022-02-15 02:18:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-02-15 02:18:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 02:18:26,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:26,467 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] [2022-02-15 02:18:26,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:18:26,467 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -917097330, now seen corresponding path program 13 times [2022-02-15 02:18:26,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:26,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268291277] [2022-02-15 02:18:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:26,604 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,628 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,713 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,740 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,775 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,797 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,853 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:27,257 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:27,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268291277] [2022-02-15 02:18:27,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268291277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:27,257 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:27,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:18:27,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615824317] [2022-02-15 02:18:27,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:27,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:18:27,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:18:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:18:27,258 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) [2022-02-15 02:18:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:27,753 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2022-02-15 02:18:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:18:27,753 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 [2022-02-15 02:18:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:27,754 INFO L225 Difference]: With dead ends: 87 [2022-02-15 02:18:27,754 INFO L226 Difference]: Without dead ends: 74 [2022-02-15 02:18:27,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:18:27,755 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 [2022-02-15 02:18:27,756 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] [2022-02-15 02:18:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-15 02:18:27,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2022-02-15 02:18:27,772 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) [2022-02-15 02:18:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-02-15 02:18:27,772 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 48 [2022-02-15 02:18:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-02-15 02:18:27,772 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) [2022-02-15 02:18:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-02-15 02:18:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 02:18:27,773 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:27,773 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] [2022-02-15 02:18:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 02:18:27,773 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1449132319, now seen corresponding path program 14 times [2022-02-15 02:18:27,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:27,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689775592] [2022-02-15 02:18:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:27,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,888 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,913 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,935 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,980 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,027 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,059 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,099 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,099 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:28,428 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:28,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689775592] [2022-02-15 02:18:28,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [689775592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:28,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:28,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:18:28,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036661373] [2022-02-15 02:18:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:28,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:18:28,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:18:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:18:28,429 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) [2022-02-15 02:18:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:29,014 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2022-02-15 02:18:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 02:18:29,015 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 [2022-02-15 02:18:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:29,015 INFO L225 Difference]: With dead ends: 89 [2022-02-15 02:18:29,015 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 02:18:29,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=1500, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:18:29,017 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, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:29,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 39 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 02:18:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2022-02-15 02:18:29,031 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) [2022-02-15 02:18:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-02-15 02:18:29,031 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 51 [2022-02-15 02:18:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-02-15 02:18:29,032 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) [2022-02-15 02:18:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-02-15 02:18:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 02:18:29,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:29,032 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] [2022-02-15 02:18:29,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 02:18:29,032 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1980622781, now seen corresponding path program 15 times [2022-02-15 02:18:29,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:29,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244032895] [2022-02-15 02:18:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:29,182 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,215 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,286 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,325 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,353 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,390 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,458 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:29,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:29,884 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:29,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244032895] [2022-02-15 02:18:29,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244032895] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:29,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:29,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:18:29,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661003461] [2022-02-15 02:18:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:18:29,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:18:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:18:29,886 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) [2022-02-15 02:18:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:30,376 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2022-02-15 02:18:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:18:30,376 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 [2022-02-15 02:18:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:30,377 INFO L225 Difference]: With dead ends: 91 [2022-02-15 02:18:30,377 INFO L226 Difference]: Without dead ends: 78 [2022-02-15 02:18:30,378 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 [2022-02-15 02:18:30,378 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 [2022-02-15 02:18:30,379 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] [2022-02-15 02:18:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-15 02:18:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-02-15 02:18:30,399 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) [2022-02-15 02:18:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-02-15 02:18:30,400 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 53 [2022-02-15 02:18:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:30,400 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-02-15 02:18:30,400 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) [2022-02-15 02:18:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-02-15 02:18:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 02:18:30,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:30,401 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] [2022-02-15 02:18:30,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 02:18:30,401 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1641848539, now seen corresponding path program 16 times [2022-02-15 02:18:30,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:30,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744494258] [2022-02-15 02:18:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:30,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,567 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,611 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,797 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,888 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,888 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:31,301 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:31,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744494258] [2022-02-15 02:18:31,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [744494258] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:31,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:31,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:18:31,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657655546] [2022-02-15 02:18:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:18:31,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:18:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:18:31,303 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) [2022-02-15 02:18:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:31,952 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2022-02-15 02:18:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:18:31,952 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 [2022-02-15 02:18:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:31,953 INFO L225 Difference]: With dead ends: 93 [2022-02-15 02:18:31,953 INFO L226 Difference]: Without dead ends: 80 [2022-02-15 02:18:31,955 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 [2022-02-15 02:18:31,956 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 147 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:31,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 49 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-15 02:18:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2022-02-15 02:18:31,983 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) [2022-02-15 02:18:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-02-15 02:18:31,983 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 55 [2022-02-15 02:18:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:31,984 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-02-15 02:18:31,984 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) [2022-02-15 02:18:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-02-15 02:18:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 02:18:31,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:31,984 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] [2022-02-15 02:18:31,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 02:18:31,984 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1797650823, now seen corresponding path program 17 times [2022-02-15 02:18:31,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:31,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540586898] [2022-02-15 02:18:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:32,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,213 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,255 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,293 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,328 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,420 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,505 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,506 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:32,933 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:32,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540586898] [2022-02-15 02:18:32,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1540586898] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:32,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:32,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:18:32,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195813430] [2022-02-15 02:18:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:32,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:18:32,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:18:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:18:32,935 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) [2022-02-15 02:18:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:33,577 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2022-02-15 02:18:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:18:33,577 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 [2022-02-15 02:18:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:33,578 INFO L225 Difference]: With dead ends: 95 [2022-02-15 02:18:33,578 INFO L226 Difference]: Without dead ends: 82 [2022-02-15 02:18:33,579 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 [2022-02-15 02:18:33,583 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 [2022-02-15 02:18:33,583 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] [2022-02-15 02:18:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-15 02:18:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2022-02-15 02:18:33,611 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) [2022-02-15 02:18:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-02-15 02:18:33,612 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2022-02-15 02:18:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:33,612 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-02-15 02:18:33,612 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) [2022-02-15 02:18:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-02-15 02:18:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 02:18:33,613 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:33,613 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] [2022-02-15 02:18:33,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 02:18:33,613 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -31719785, now seen corresponding path program 18 times [2022-02-15 02:18:33,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:33,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145787273] [2022-02-15 02:18:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:33,743 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,861 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,888 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,916 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,944 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,001 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,001 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:34,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:34,413 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:34,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145787273] [2022-02-15 02:18:34,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145787273] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:34,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:34,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:18:34,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446223266] [2022-02-15 02:18:34,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:18:34,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:18:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:18:34,415 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) [2022-02-15 02:18:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:34,964 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-02-15 02:18:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:18:34,964 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 [2022-02-15 02:18:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:34,964 INFO L225 Difference]: With dead ends: 97 [2022-02-15 02:18:34,965 INFO L226 Difference]: Without dead ends: 84 [2022-02-15 02:18:34,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=2184, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:18:34,966 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:34,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 34 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-15 02:18:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2022-02-15 02:18:34,993 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) [2022-02-15 02:18:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-02-15 02:18:34,994 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 59 [2022-02-15 02:18:34,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:34,994 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-02-15 02:18:34,994 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) [2022-02-15 02:18:34,994 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-02-15 02:18:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 02:18:34,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:34,995 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] [2022-02-15 02:18:34,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 02:18:34,995 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash 515925813, now seen corresponding path program 19 times [2022-02-15 02:18:34,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:34,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794051751] [2022-02-15 02:18:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:35,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,145 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,180 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,305 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,352 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,352 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:35,781 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:35,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794051751] [2022-02-15 02:18:35,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [794051751] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:35,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:35,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:18:35,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43261360] [2022-02-15 02:18:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:35,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:18:35,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:18:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:18:35,783 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) [2022-02-15 02:18:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:36,588 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-02-15 02:18:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:18:36,589 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 [2022-02-15 02:18:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:36,589 INFO L225 Difference]: With dead ends: 101 [2022-02-15 02:18:36,589 INFO L226 Difference]: Without dead ends: 88 [2022-02-15 02:18:36,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:18:36,591 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, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:36,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 84 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-15 02:18:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2022-02-15 02:18:36,613 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) [2022-02-15 02:18:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-02-15 02:18:36,613 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 61 [2022-02-15 02:18:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:36,613 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-02-15 02:18:36,614 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) [2022-02-15 02:18:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-02-15 02:18:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 02:18:36,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:36,614 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] [2022-02-15 02:18:36,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 02:18:36,614 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:36,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1477631917, now seen corresponding path program 20 times [2022-02-15 02:18:36,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:36,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128868310] [2022-02-15 02:18:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:36,752 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,784 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,822 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,845 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,885 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:36,980 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,015 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:37,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:37,596 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:37,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128868310] [2022-02-15 02:18:37,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [128868310] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:37,597 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:37,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:18:37,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836790892] [2022-02-15 02:18:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:37,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:18:37,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:18:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:18:37,598 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) [2022-02-15 02:18:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:38,321 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2022-02-15 02:18:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:18:38,321 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 [2022-02-15 02:18:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:38,322 INFO L225 Difference]: With dead ends: 102 [2022-02-15 02:18:38,322 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 02:18:38,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=396, Invalid=2574, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:18:38,323 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, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:38,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 34 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 02:18:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 68. [2022-02-15 02:18:38,360 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) [2022-02-15 02:18:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-02-15 02:18:38,361 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 63 [2022-02-15 02:18:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:38,361 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-02-15 02:18:38,361 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) [2022-02-15 02:18:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-02-15 02:18:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 02:18:38,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:38,362 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] [2022-02-15 02:18:38,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 02:18:38,362 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:38,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1396097850, now seen corresponding path program 21 times [2022-02-15 02:18:38,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:38,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486230161] [2022-02-15 02:18:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:38,488 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,510 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,541 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,567 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:38,745 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:39,368 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:39,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486230161] [2022-02-15 02:18:39,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [486230161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:39,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:39,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:18:39,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031783362] [2022-02-15 02:18:39,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:39,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:18:39,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:18:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:18:39,369 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) [2022-02-15 02:18:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:40,254 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2022-02-15 02:18:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:18:40,255 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 [2022-02-15 02:18:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:40,255 INFO L225 Difference]: With dead ends: 104 [2022-02-15 02:18:40,255 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 02:18:40,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 27 SyntacticMatches, 12 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=2781, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:18:40,256 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:40,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 84 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 02:18:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2022-02-15 02:18:40,286 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) [2022-02-15 02:18:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-02-15 02:18:40,287 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 66 [2022-02-15 02:18:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:40,287 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-02-15 02:18:40,287 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) [2022-02-15 02:18:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-02-15 02:18:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 02:18:40,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:40,288 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] [2022-02-15 02:18:40,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 02:18:40,289 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1740861672, now seen corresponding path program 22 times [2022-02-15 02:18:40,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:40,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022924012] [2022-02-15 02:18:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:40,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,406 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,433 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,489 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,561 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:40,621 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:40,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:41,343 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:41,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022924012] [2022-02-15 02:18:41,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1022924012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:41,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:41,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:18:41,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604272416] [2022-02-15 02:18:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:41,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:18:41,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:18:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:18:41,344 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) [2022-02-15 02:18:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:42,265 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2022-02-15 02:18:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:18:42,266 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 [2022-02-15 02:18:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:42,268 INFO L225 Difference]: With dead ends: 106 [2022-02-15 02:18:42,268 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 02:18:42,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=426, Invalid=2996, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:18:42,269 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-02-15 02:18:42,270 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] [2022-02-15 02:18:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 02:18:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2022-02-15 02:18:42,301 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) [2022-02-15 02:18:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-02-15 02:18:42,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 68 [2022-02-15 02:18:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:42,316 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-02-15 02:18:42,316 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) [2022-02-15 02:18:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-02-15 02:18:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 02:18:42,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:42,317 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] [2022-02-15 02:18:42,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 02:18:42,317 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1291920522, now seen corresponding path program 23 times [2022-02-15 02:18:42,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:42,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493334207] [2022-02-15 02:18:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:42,433 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,509 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,617 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,655 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:42,729 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:43,374 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:43,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493334207] [2022-02-15 02:18:43,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1493334207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:43,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:43,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:18:43,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293105521] [2022-02-15 02:18:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:43,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:18:43,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:18:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:18:43,376 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) [2022-02-15 02:18:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:44,441 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2022-02-15 02:18:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:18:44,441 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 [2022-02-15 02:18:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:44,442 INFO L225 Difference]: With dead ends: 108 [2022-02-15 02:18:44,442 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 02:18:44,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 30 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=441, Invalid=3219, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:18:44,443 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 [2022-02-15 02:18:44,443 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] [2022-02-15 02:18:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 02:18:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2022-02-15 02:18:44,469 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) [2022-02-15 02:18:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-02-15 02:18:44,470 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 70 [2022-02-15 02:18:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:44,470 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-02-15 02:18:44,470 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) [2022-02-15 02:18:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-02-15 02:18:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 02:18:44,471 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:44,471 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] [2022-02-15 02:18:44,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 02:18:44,471 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 643795028, now seen corresponding path program 24 times [2022-02-15 02:18:44,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:44,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110072856] [2022-02-15 02:18:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:44,594 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,783 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,809 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:44,849 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:45,550 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:45,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110072856] [2022-02-15 02:18:45,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1110072856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:45,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:45,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:18:45,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058324696] [2022-02-15 02:18:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:45,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:18:45,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:18:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:18:45,552 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) [2022-02-15 02:18:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:46,428 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2022-02-15 02:18:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:18:46,428 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 [2022-02-15 02:18:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:46,429 INFO L225 Difference]: With dead ends: 110 [2022-02-15 02:18:46,429 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 02:18:46,432 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 [2022-02-15 02:18:46,433 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:46,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 69 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 02:18:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2022-02-15 02:18:46,462 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) [2022-02-15 02:18:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-02-15 02:18:46,462 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 72 [2022-02-15 02:18:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:46,463 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-02-15 02:18:46,463 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) [2022-02-15 02:18:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-02-15 02:18:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 02:18:46,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:46,463 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] [2022-02-15 02:18:46,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 02:18:46,463 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1145599410, now seen corresponding path program 25 times [2022-02-15 02:18:46,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:46,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193366867] [2022-02-15 02:18:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:46,591 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,894 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:46,894 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:47,758 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:47,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193366867] [2022-02-15 02:18:47,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [193366867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:47,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:47,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:18:47,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390801480] [2022-02-15 02:18:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:47,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:18:47,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:18:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:18:47,759 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) [2022-02-15 02:18:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:48,815 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-02-15 02:18:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:18:48,816 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 [2022-02-15 02:18:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:48,816 INFO L225 Difference]: With dead ends: 112 [2022-02-15 02:18:48,817 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 02:18:48,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 31 SyntacticMatches, 12 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=471, Invalid=3689, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:18:48,818 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 219 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:48,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 34 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 02:18:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2022-02-15 02:18:48,874 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) [2022-02-15 02:18:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-02-15 02:18:48,874 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 74 [2022-02-15 02:18:48,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:48,874 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-02-15 02:18:48,874 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) [2022-02-15 02:18:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-02-15 02:18:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 02:18:48,875 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:48,875 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] [2022-02-15 02:18:48,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 02:18:48,876 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1951693936, now seen corresponding path program 26 times [2022-02-15 02:18:48,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:48,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548606847] [2022-02-15 02:18:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:48,977 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:48,996 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,042 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,072 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,093 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,122 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,193 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,193 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:49,743 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:49,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548606847] [2022-02-15 02:18:49,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1548606847] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:49,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:49,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:18:49,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694764893] [2022-02-15 02:18:49,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:49,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:18:49,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:18:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:18:49,748 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) [2022-02-15 02:18:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:50,617 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2022-02-15 02:18:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:18:50,617 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 [2022-02-15 02:18:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:50,618 INFO L225 Difference]: With dead ends: 116 [2022-02-15 02:18:50,618 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 02:18:50,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=486, Invalid=3936, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:18:50,620 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, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:50,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 34 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 02:18:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2022-02-15 02:18:50,657 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) [2022-02-15 02:18:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-02-15 02:18:50,657 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 76 [2022-02-15 02:18:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:50,658 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-02-15 02:18:50,658 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) [2022-02-15 02:18:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-02-15 02:18:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 02:18:50,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:50,665 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] [2022-02-15 02:18:50,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 02:18:50,665 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2038263314, now seen corresponding path program 27 times [2022-02-15 02:18:50,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:50,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641074495] [2022-02-15 02:18:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:50,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,789 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,815 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,835 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,865 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,970 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:50,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:51,051 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:51,052 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:52,168 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:52,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641074495] [2022-02-15 02:18:52,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641074495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:52,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:52,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:18:52,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897889813] [2022-02-15 02:18:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:52,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:18:52,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:18:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:18:52,170 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) [2022-02-15 02:18:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:53,224 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2022-02-15 02:18:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:18:53,224 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 [2022-02-15 02:18:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:53,225 INFO L225 Difference]: With dead ends: 117 [2022-02-15 02:18:53,225 INFO L226 Difference]: Without dead ends: 104 [2022-02-15 02:18:53,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 26 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=501, Invalid=4191, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:18:53,226 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, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:53,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 114 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-15 02:18:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2022-02-15 02:18:53,268 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) [2022-02-15 02:18:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-02-15 02:18:53,269 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 78 [2022-02-15 02:18:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:53,269 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-02-15 02:18:53,269 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) [2022-02-15 02:18:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-02-15 02:18:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:18:53,269 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:53,269 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] [2022-02-15 02:18:53,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 02:18:53,270 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:53,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1541003329, now seen corresponding path program 28 times [2022-02-15 02:18:53,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:53,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674710905] [2022-02-15 02:18:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:53,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,459 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,488 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,553 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,589 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:53,659 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:54,490 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:54,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674710905] [2022-02-15 02:18:54,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1674710905] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:54,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:54,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:18:54,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529579937] [2022-02-15 02:18:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:54,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:18:54,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:18:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:18:54,492 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) [2022-02-15 02:18:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:55,537 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2022-02-15 02:18:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:18:55,537 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 [2022-02-15 02:18:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:55,537 INFO L225 Difference]: With dead ends: 119 [2022-02-15 02:18:55,538 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 02:18:55,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 14 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=516, Invalid=4454, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:18:55,538 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 157 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:55,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 44 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 02:18:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2022-02-15 02:18:55,579 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) [2022-02-15 02:18:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-02-15 02:18:55,580 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 81 [2022-02-15 02:18:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:55,580 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-02-15 02:18:55,580 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) [2022-02-15 02:18:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-02-15 02:18:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 02:18:55,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:55,580 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] [2022-02-15 02:18:55,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 02:18:55,581 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1793386077, now seen corresponding path program 29 times [2022-02-15 02:18:55,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:55,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194804794] [2022-02-15 02:18:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:55,680 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,743 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,769 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,789 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,834 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,885 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:55,885 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:56,894 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:56,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194804794] [2022-02-15 02:18:56,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [194804794] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:56,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:56,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:18:56,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768842017] [2022-02-15 02:18:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:56,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:18:56,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:56,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:18:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 02:18:56,895 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) [2022-02-15 02:18:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:58,195 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2022-02-15 02:18:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:18:58,195 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 [2022-02-15 02:18:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:58,196 INFO L225 Difference]: With dead ends: 121 [2022-02-15 02:18:58,196 INFO L226 Difference]: Without dead ends: 108 [2022-02-15 02:18:58,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 31 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=531, Invalid=4725, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:18:58,197 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:58,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 109 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 02:18:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-15 02:18:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2022-02-15 02:18:58,234 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) [2022-02-15 02:18:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-02-15 02:18:58,234 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 83 [2022-02-15 02:18:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:58,235 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-02-15 02:18:58,235 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) [2022-02-15 02:18:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-02-15 02:18:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 02:18:58,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:58,241 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] [2022-02-15 02:18:58,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 02:18:58,241 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2096002427, now seen corresponding path program 30 times [2022-02-15 02:18:58,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:58,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632434924] [2022-02-15 02:18:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:58,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,468 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,495 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,534 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,619 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:58,695 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:59,675 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:59,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632434924] [2022-02-15 02:18:59,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632434924] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:59,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:59,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:18:59,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787076063] [2022-02-15 02:18:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:59,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:18:59,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:18:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:18:59,677 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) [2022-02-15 02:19:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:01,335 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2022-02-15 02:19:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 02:19:01,335 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 [2022-02-15 02:19:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:01,336 INFO L225 Difference]: With dead ends: 123 [2022-02-15 02:19:01,336 INFO L226 Difference]: Without dead ends: 110 [2022-02-15 02:19:01,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 20 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=546, Invalid=5004, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:19:01,337 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:01,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 24 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:19:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-15 02:19:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2022-02-15 02:19:01,395 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) [2022-02-15 02:19:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2022-02-15 02:19:01,396 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 85 [2022-02-15 02:19:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:01,396 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2022-02-15 02:19:01,396 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) [2022-02-15 02:19:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2022-02-15 02:19:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:19:01,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:01,397 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] [2022-02-15 02:19:01,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 02:19:01,397 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash 852538649, now seen corresponding path program 31 times [2022-02-15 02:19:01,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:01,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807800098] [2022-02-15 02:19:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:01,541 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,609 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,644 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,713 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,793 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,847 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,891 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:01,891 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:01,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:03,126 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:03,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807800098] [2022-02-15 02:19:03,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1807800098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:03,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:03,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:19:03,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069228687] [2022-02-15 02:19:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:03,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:19:03,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:19:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 02:19:03,128 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) [2022-02-15 02:19:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:04,558 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2022-02-15 02:19:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:19:04,559 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 [2022-02-15 02:19:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:04,559 INFO L225 Difference]: With dead ends: 125 [2022-02-15 02:19:04,559 INFO L226 Difference]: Without dead ends: 112 [2022-02-15 02:19:04,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 34 SyntacticMatches, 16 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=561, Invalid=5291, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:19:04,562 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:04,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 24 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 02:19:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-15 02:19:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2022-02-15 02:19:04,620 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) [2022-02-15 02:19:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2022-02-15 02:19:04,621 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 87 [2022-02-15 02:19:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:04,621 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2022-02-15 02:19:04,621 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) [2022-02-15 02:19:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2022-02-15 02:19:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:19:04,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:04,622 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] [2022-02-15 02:19:04,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 02:19:04,622 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash -115243721, now seen corresponding path program 32 times [2022-02-15 02:19:04,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:04,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641947008] [2022-02-15 02:19:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:04,766 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,789 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,885 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,944 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:04,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,024 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:06,035 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:06,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641947008] [2022-02-15 02:19:06,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [641947008] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:06,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:06,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 02:19:06,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476756821] [2022-02-15 02:19:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:06,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 02:19:06,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 02:19:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:19:06,037 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) [2022-02-15 02:19:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:07,391 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2022-02-15 02:19:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 02:19:07,392 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 [2022-02-15 02:19:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:07,392 INFO L225 Difference]: With dead ends: 127 [2022-02-15 02:19:07,392 INFO L226 Difference]: Without dead ends: 114 [2022-02-15 02:19:07,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 35 SyntacticMatches, 16 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=576, Invalid=5586, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:19:07,396 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 [2022-02-15 02:19:07,396 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] [2022-02-15 02:19:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-15 02:19:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 92. [2022-02-15 02:19:07,441 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) [2022-02-15 02:19:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2022-02-15 02:19:07,442 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 89 [2022-02-15 02:19:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:07,442 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2022-02-15 02:19:07,442 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) [2022-02-15 02:19:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2022-02-15 02:19:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 02:19:07,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:07,443 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] [2022-02-15 02:19:07,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 02:19:07,443 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:07,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:07,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1853801941, now seen corresponding path program 33 times [2022-02-15 02:19:07,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:07,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019038718] [2022-02-15 02:19:07,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:07,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,657 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,716 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,751 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,774 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,816 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:07,816 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:08,619 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:08,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019038718] [2022-02-15 02:19:08,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019038718] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:08,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:08,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 02:19:08,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056759901] [2022-02-15 02:19:08,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:08,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 02:19:08,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 02:19:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1523, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:19:08,621 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) [2022-02-15 02:19:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:10,216 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2022-02-15 02:19:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:19:10,229 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 [2022-02-15 02:19:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:10,230 INFO L225 Difference]: With dead ends: 131 [2022-02-15 02:19:10,230 INFO L226 Difference]: Without dead ends: 118 [2022-02-15 02:19:10,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 41 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=591, Invalid=5889, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:19:10,231 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, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:10,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 44 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:19:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-15 02:19:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2022-02-15 02:19:10,284 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) [2022-02-15 02:19:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2022-02-15 02:19:10,285 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 91 [2022-02-15 02:19:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:10,285 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2022-02-15 02:19:10,285 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) [2022-02-15 02:19:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2022-02-15 02:19:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:19:10,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:10,287 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] [2022-02-15 02:19:10,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 02:19:10,287 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 26105587, now seen corresponding path program 34 times [2022-02-15 02:19:10,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:10,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055384513] [2022-02-15 02:19:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:10,417 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,439 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,469 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,492 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,520 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,541 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,589 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,655 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:10,657 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:11,717 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:11,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055384513] [2022-02-15 02:19:11,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2055384513] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:11,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:11,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 02:19:11,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646360270] [2022-02-15 02:19:11,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:11,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 02:19:11,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:11,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 02:19:11,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:19:11,718 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) [2022-02-15 02:19:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:13,136 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2022-02-15 02:19:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:19:13,136 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 [2022-02-15 02:19:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:13,137 INFO L225 Difference]: With dead ends: 132 [2022-02-15 02:19:13,137 INFO L226 Difference]: Without dead ends: 119 [2022-02-15 02:19:13,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 27 SyntacticMatches, 26 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=606, Invalid=6200, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:19:13,138 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 [2022-02-15 02:19:13,138 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] [2022-02-15 02:19:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-15 02:19:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-02-15 02:19:13,213 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) [2022-02-15 02:19:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2022-02-15 02:19:13,214 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 93 [2022-02-15 02:19:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:13,214 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2022-02-15 02:19:13,214 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) [2022-02-15 02:19:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2022-02-15 02:19:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-15 02:19:13,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:13,215 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] [2022-02-15 02:19:13,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 02:19:13,215 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1563785062, now seen corresponding path program 35 times [2022-02-15 02:19:13,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:13,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970429953] [2022-02-15 02:19:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:13,332 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,352 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,382 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,485 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,508 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,546 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:13,547 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:13,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:14,906 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:14,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970429953] [2022-02-15 02:19:14,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1970429953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:14,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:14,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 02:19:14,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652697945] [2022-02-15 02:19:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 02:19:14,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 02:19:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1683, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:19:14,907 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) [2022-02-15 02:19:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:16,863 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2022-02-15 02:19:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:19:16,863 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 [2022-02-15 02:19:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:16,864 INFO L225 Difference]: With dead ends: 134 [2022-02-15 02:19:16,864 INFO L226 Difference]: Without dead ends: 121 [2022-02-15 02:19:16,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 35 SyntacticMatches, 20 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=621, Invalid=6519, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:19:16,865 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 197 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:16,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 109 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-15 02:19:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2022-02-15 02:19:16,941 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) [2022-02-15 02:19:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-02-15 02:19:16,942 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 96 [2022-02-15 02:19:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:16,942 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-02-15 02:19:16,942 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) [2022-02-15 02:19:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-02-15 02:19:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-15 02:19:16,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:16,943 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] [2022-02-15 02:19:16,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 02:19:16,943 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:16,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1374977144, now seen corresponding path program 36 times [2022-02-15 02:19:16,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:16,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098136774] [2022-02-15 02:19:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:17,159 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,281 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,311 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,439 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,502 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,547 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:17,618 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:19,330 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:19,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098136774] [2022-02-15 02:19:19,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2098136774] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:19,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:19,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 02:19:19,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133210055] [2022-02-15 02:19:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:19,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 02:19:19,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 02:19:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:19:19,332 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) [2022-02-15 02:19:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:21,981 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2022-02-15 02:19:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:19:21,981 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 [2022-02-15 02:19:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:21,982 INFO L225 Difference]: With dead ends: 136 [2022-02-15 02:19:21,982 INFO L226 Difference]: Without dead ends: 123 [2022-02-15 02:19:21,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 34 SyntacticMatches, 22 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=636, Invalid=6846, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:19:21,983 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:21,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 54 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:19:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-02-15 02:19:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2022-02-15 02:19:22,035 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) [2022-02-15 02:19:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2022-02-15 02:19:22,035 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 98 [2022-02-15 02:19:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:22,035 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2022-02-15 02:19:22,035 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) [2022-02-15 02:19:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2022-02-15 02:19:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-15 02:19:22,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:22,036 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] [2022-02-15 02:19:22,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 02:19:22,036 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash -563023658, now seen corresponding path program 37 times [2022-02-15 02:19:22,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:22,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177620099] [2022-02-15 02:19:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:22,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,463 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:22,463 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:22,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:23,758 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:23,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177620099] [2022-02-15 02:19:23,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177620099] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:23,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:23,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 02:19:23,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47838049] [2022-02-15 02:19:23,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:23,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 02:19:23,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 02:19:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1851, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:19:23,762 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) [2022-02-15 02:19:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:25,396 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2022-02-15 02:19:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:19:25,396 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 [2022-02-15 02:19:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:25,397 INFO L225 Difference]: With dead ends: 138 [2022-02-15 02:19:25,397 INFO L226 Difference]: Without dead ends: 125 [2022-02-15 02:19:25,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 35 SyntacticMatches, 22 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=651, Invalid=7181, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:19:25,398 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:25,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 34 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:19:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-15 02:19:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2022-02-15 02:19:25,481 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) [2022-02-15 02:19:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-02-15 02:19:25,481 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 100 [2022-02-15 02:19:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:25,482 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-02-15 02:19:25,482 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) [2022-02-15 02:19:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-02-15 02:19:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-15 02:19:25,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:25,482 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] [2022-02-15 02:19:25,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 02:19:25,483 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1034012084, now seen corresponding path program 38 times [2022-02-15 02:19:25,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:25,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640152298] [2022-02-15 02:19:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:25,614 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,664 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,735 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,766 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:25,829 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:26,813 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:26,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640152298] [2022-02-15 02:19:26,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640152298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:26,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:26,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 02:19:26,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692918620] [2022-02-15 02:19:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:26,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 02:19:26,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 02:19:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:19:26,815 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) [2022-02-15 02:19:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:28,658 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2022-02-15 02:19:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:19:28,658 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 [2022-02-15 02:19:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:28,659 INFO L225 Difference]: With dead ends: 140 [2022-02-15 02:19:28,659 INFO L226 Difference]: Without dead ends: 127 [2022-02-15 02:19:28,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 43 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=666, Invalid=7524, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:19:28,661 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 167 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:28,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 69 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:19:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-15 02:19:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2022-02-15 02:19:28,764 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) [2022-02-15 02:19:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-02-15 02:19:28,765 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 102 [2022-02-15 02:19:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:28,765 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-02-15 02:19:28,765 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) [2022-02-15 02:19:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-02-15 02:19:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 02:19:28,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:28,765 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] [2022-02-15 02:19:28,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 02:19:28,766 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1812931822, now seen corresponding path program 39 times [2022-02-15 02:19:28,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:28,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469823337] [2022-02-15 02:19:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:28,908 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:28,929 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:28,967 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:28,988 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,016 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,038 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,076 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,104 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:29,155 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:29,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:30,445 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:30,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469823337] [2022-02-15 02:19:30,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [469823337] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:30,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:30,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 02:19:30,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934863909] [2022-02-15 02:19:30,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:30,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 02:19:30,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 02:19:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:19:30,447 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) [2022-02-15 02:19:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:32,571 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2022-02-15 02:19:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 02:19:32,572 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 [2022-02-15 02:19:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:32,572 INFO L225 Difference]: With dead ends: 142 [2022-02-15 02:19:32,572 INFO L226 Difference]: Without dead ends: 129 [2022-02-15 02:19:32,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 34 SyntacticMatches, 25 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=681, Invalid=7875, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:19:32,573 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 217 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:32,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 49 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-15 02:19:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2022-02-15 02:19:32,667 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) [2022-02-15 02:19:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-02-15 02:19:32,667 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 104 [2022-02-15 02:19:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:32,667 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-02-15 02:19:32,668 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) [2022-02-15 02:19:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-02-15 02:19:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-15 02:19:32,668 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:32,668 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] [2022-02-15 02:19:32,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 02:19:32,669 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:32,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:32,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1831857936, now seen corresponding path program 40 times [2022-02-15 02:19:32,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:32,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584093759] [2022-02-15 02:19:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:32,804 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,934 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,986 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:33,027 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:33,027 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:34,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:34,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584093759] [2022-02-15 02:19:34,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [584093759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:34,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:34,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 02:19:34,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204974461] [2022-02-15 02:19:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:34,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 02:19:34,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 02:19:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2118, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:19:34,179 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) [2022-02-15 02:19:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:36,106 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2022-02-15 02:19:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 02:19:36,106 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 [2022-02-15 02:19:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:36,128 INFO L225 Difference]: With dead ends: 146 [2022-02-15 02:19:36,128 INFO L226 Difference]: Without dead ends: 133 [2022-02-15 02:19:36,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 39 SyntacticMatches, 21 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=696, Invalid=8234, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:19:36,129 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:36,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 59 Invalid, 4168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4014 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:19:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-15 02:19:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2022-02-15 02:19:36,193 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) [2022-02-15 02:19:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2022-02-15 02:19:36,194 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 106 [2022-02-15 02:19:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:36,194 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2022-02-15 02:19:36,194 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) [2022-02-15 02:19:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2022-02-15 02:19:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 02:19:36,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:36,195 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] [2022-02-15 02:19:36,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 02:19:36,195 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1454982990, now seen corresponding path program 41 times [2022-02-15 02:19:36,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:36,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76592603] [2022-02-15 02:19:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:36,877 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,935 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,991 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:37,012 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:37,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:37,066 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:37,101 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:37,101 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:38,242 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:38,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76592603] [2022-02-15 02:19:38,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [76592603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:38,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:38,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 02:19:38,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406965655] [2022-02-15 02:19:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:38,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 02:19:38,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 02:19:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:19:38,244 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) [2022-02-15 02:19:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:40,291 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2022-02-15 02:19:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 02:19:40,292 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 [2022-02-15 02:19:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:40,297 INFO L225 Difference]: With dead ends: 144 [2022-02-15 02:19:40,297 INFO L226 Difference]: Without dead ends: 131 [2022-02-15 02:19:40,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 35 SyntacticMatches, 25 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=723, Invalid=8979, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:19:40,298 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 172 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:40,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 58 Invalid, 3946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:19:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-15 02:19:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2022-02-15 02:19:40,400 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) [2022-02-15 02:19:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2022-02-15 02:19:40,401 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 108 [2022-02-15 02:19:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:40,401 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2022-02-15 02:19:40,401 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) [2022-02-15 02:19:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2022-02-15 02:19:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-15 02:19:40,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:40,402 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] [2022-02-15 02:19:40,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 02:19:40,402 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1616358397, now seen corresponding path program 42 times [2022-02-15 02:19:40,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:40,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47040040] [2022-02-15 02:19:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:41,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,072 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,120 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,190 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,219 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,255 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,334 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,335 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:41,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:43,202 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:43,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47040040] [2022-02-15 02:19:43,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [47040040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:43,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:43,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 02:19:43,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357631916] [2022-02-15 02:19:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:43,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 02:19:43,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 02:19:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2405, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 02:19:43,204 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) [2022-02-15 02:19:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:45,265 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2022-02-15 02:19:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 02:19:45,265 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 [2022-02-15 02:19:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:45,266 INFO L225 Difference]: With dead ends: 145 [2022-02-15 02:19:45,266 INFO L226 Difference]: Without dead ends: 132 [2022-02-15 02:19:45,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 19 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=735, Invalid=9365, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:19:45,267 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 209 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:45,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 158 Invalid, 4580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4426 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-15 02:19:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2022-02-15 02:19:45,352 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) [2022-02-15 02:19:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2022-02-15 02:19:45,353 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 111 [2022-02-15 02:19:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:45,353 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2022-02-15 02:19:45,353 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) [2022-02-15 02:19:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2022-02-15 02:19:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-15 02:19:45,354 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:45,354 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] [2022-02-15 02:19:45,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 02:19:45,354 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 354070922, now seen corresponding path program 43 times [2022-02-15 02:19:45,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:45,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311017612] [2022-02-15 02:19:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:45,866 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,892 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,908 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,923 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,962 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,020 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,058 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,186 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,187 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:48,002 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:48,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311017612] [2022-02-15 02:19:48,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [311017612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:48,003 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:48,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 02:19:48,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153130391] [2022-02-15 02:19:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:48,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 02:19:48,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:48,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 02:19:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:19:48,004 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) [2022-02-15 02:19:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:50,211 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2022-02-15 02:19:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 02:19:50,211 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 [2022-02-15 02:19:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:50,212 INFO L225 Difference]: With dead ends: 147 [2022-02-15 02:19:50,212 INFO L226 Difference]: Without dead ends: 134 [2022-02-15 02:19:50,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 40 SyntacticMatches, 24 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=747, Invalid=9759, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:19:50,214 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4781 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:50,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 123 Invalid, 4940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4781 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:19:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-15 02:19:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2022-02-15 02:19:50,301 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) [2022-02-15 02:19:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-02-15 02:19:50,302 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 114 [2022-02-15 02:19:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:50,302 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-02-15 02:19:50,302 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) [2022-02-15 02:19:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-02-15 02:19:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-15 02:19:50,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:50,303 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] [2022-02-15 02:19:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 02:19:50,303 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1893607784, now seen corresponding path program 44 times [2022-02-15 02:19:50,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:50,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835996429] [2022-02-15 02:19:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:50,874 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,969 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,997 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,056 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,111 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,157 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:51,157 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:51,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:53,035 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:53,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835996429] [2022-02-15 02:19:53,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1835996429] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:53,035 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:53,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 02:19:53,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722352409] [2022-02-15 02:19:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:53,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 02:19:53,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 02:19:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 02:19:53,036 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) [2022-02-15 02:19:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:55,425 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2022-02-15 02:19:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 02:19:55,425 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 [2022-02-15 02:19:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:55,426 INFO L225 Difference]: With dead ends: 149 [2022-02-15 02:19:55,426 INFO L226 Difference]: Without dead ends: 136 [2022-02-15 02:19:55,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=759, Invalid=10161, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:19:55,428 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:55,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 28 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:19:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-15 02:19:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2022-02-15 02:19:55,541 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) [2022-02-15 02:19:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2022-02-15 02:19:55,542 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 116 [2022-02-15 02:19:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:55,542 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2022-02-15 02:19:55,542 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) [2022-02-15 02:19:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2022-02-15 02:19:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-15 02:19:55,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:55,543 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] [2022-02-15 02:19:55,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 02:19:55,543 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -375184954, now seen corresponding path program 45 times [2022-02-15 02:19:55,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:55,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702382773] [2022-02-15 02:19:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:56,109 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,203 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,295 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,321 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,359 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,392 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:56,393 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:56,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:57,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:57,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702382773] [2022-02-15 02:19:57,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1702382773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:57,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:57,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 02:19:57,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343079937] [2022-02-15 02:19:57,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:57,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 02:19:57,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 02:19:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2711, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:19:57,630 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) [2022-02-15 02:19:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:59,983 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2022-02-15 02:19:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 02:19:59,984 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 [2022-02-15 02:19:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:59,985 INFO L225 Difference]: With dead ends: 151 [2022-02-15 02:19:59,985 INFO L226 Difference]: Without dead ends: 138 [2022-02-15 02:19:59,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 47 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=771, Invalid=10571, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:19:59,988 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 206 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:59,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 73 Invalid, 5277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:20:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-02-15 02:20:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2022-02-15 02:20:00,095 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) [2022-02-15 02:20:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2022-02-15 02:20:00,095 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 118 [2022-02-15 02:20:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:00,095 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2022-02-15 02:20:00,096 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) [2022-02-15 02:20:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2022-02-15 02:20:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-15 02:20:00,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:00,097 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] [2022-02-15 02:20:00,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:20:00,097 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:00,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1158380196, now seen corresponding path program 46 times [2022-02-15 02:20:00,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:00,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113025244] [2022-02-15 02:20:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:00,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,682 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,711 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,740 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,779 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,810 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,889 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,926 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:02,847 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:02,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113025244] [2022-02-15 02:20:02,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1113025244] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:02,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:02,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 02:20:02,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874341724] [2022-02-15 02:20:02,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:02,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 02:20:02,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 02:20:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2817, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:20:02,848 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) [2022-02-15 02:20:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:05,267 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2022-02-15 02:20:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 02:20:05,267 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 [2022-02-15 02:20:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:05,268 INFO L225 Difference]: With dead ends: 153 [2022-02-15 02:20:05,268 INFO L226 Difference]: Without dead ends: 140 [2022-02-15 02:20:05,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 40 SyntacticMatches, 27 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=783, Invalid=10989, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:20:05,270 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 [2022-02-15 02:20:05,270 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] [2022-02-15 02:20:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-02-15 02:20:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-02-15 02:20:05,344 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) [2022-02-15 02:20:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2022-02-15 02:20:05,344 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 120 [2022-02-15 02:20:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:05,345 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2022-02-15 02:20:05,345 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) [2022-02-15 02:20:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2022-02-15 02:20:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-15 02:20:05,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:05,346 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] [2022-02-15 02:20:05,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:20:05,346 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1740706818, now seen corresponding path program 47 times [2022-02-15 02:20:05,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:05,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120651333] [2022-02-15 02:20:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:06,134 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,170 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,208 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,286 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,403 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,448 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,508 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:06,509 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:08,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:08,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120651333] [2022-02-15 02:20:08,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2120651333] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:08,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:08,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 02:20:08,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708984269] [2022-02-15 02:20:08,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:08,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 02:20:08,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:08,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 02:20:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:20:08,236 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) [2022-02-15 02:20:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:11,095 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2022-02-15 02:20:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 02:20:11,097 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 [2022-02-15 02:20:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:11,098 INFO L225 Difference]: With dead ends: 155 [2022-02-15 02:20:11,098 INFO L226 Difference]: Without dead ends: 142 [2022-02-15 02:20:11,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 45 SyntacticMatches, 23 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=795, Invalid=11415, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:20:11,099 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5160 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2022-02-15 02:20:11,099 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] [2022-02-15 02:20:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-02-15 02:20:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2022-02-15 02:20:11,192 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) [2022-02-15 02:20:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-02-15 02:20:11,192 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 122 [2022-02-15 02:20:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-02-15 02:20:11,193 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) [2022-02-15 02:20:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-02-15 02:20:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-15 02:20:11,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:11,193 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] [2022-02-15 02:20:11,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:20:11,193 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1284125216, now seen corresponding path program 48 times [2022-02-15 02:20:11,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:11,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036399656] [2022-02-15 02:20:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:12,036 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,077 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,131 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,168 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,261 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,418 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:12,418 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:14,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:14,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036399656] [2022-02-15 02:20:14,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2036399656] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:14,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:14,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 02:20:14,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727841698] [2022-02-15 02:20:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:14,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 02:20:14,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 02:20:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=3035, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 02:20:14,124 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) [2022-02-15 02:20:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:16,720 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-02-15 02:20:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 02:20:16,721 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 [2022-02-15 02:20:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:16,721 INFO L225 Difference]: With dead ends: 159 [2022-02-15 02:20:16,722 INFO L226 Difference]: Without dead ends: 146 [2022-02-15 02:20:16,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 41 SyntacticMatches, 28 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2895 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=807, Invalid=11849, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:20:16,723 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, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:16,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 43 Invalid, 6049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5882 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:20:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-02-15 02:20:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2022-02-15 02:20:16,845 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) [2022-02-15 02:20:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-02-15 02:20:16,846 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 124 [2022-02-15 02:20:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:16,846 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-02-15 02:20:16,846 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) [2022-02-15 02:20:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-02-15 02:20:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-15 02:20:16,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:16,847 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] [2022-02-15 02:20:16,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 02:20:16,847 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash -454850498, now seen corresponding path program 49 times [2022-02-15 02:20:16,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:16,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204417738] [2022-02-15 02:20:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:17,693 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,762 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,861 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:17,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:18,007 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:18,063 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:18,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:18,106 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:19,769 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:19,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204417738] [2022-02-15 02:20:19,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1204417738] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:19,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:19,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 02:20:19,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918788653] [2022-02-15 02:20:19,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:19,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 02:20:19,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 02:20:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3147, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:20:19,771 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) [2022-02-15 02:20:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:22,144 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-02-15 02:20:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 02:20:22,144 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 [2022-02-15 02:20:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:22,145 INFO L225 Difference]: With dead ends: 160 [2022-02-15 02:20:22,145 INFO L226 Difference]: Without dead ends: 147 [2022-02-15 02:20:22,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 46 SyntacticMatches, 24 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3009 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=819, Invalid=12291, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:20:22,146 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 168 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 5328 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:22,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 138 Invalid, 5448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 5328 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:20:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-15 02:20:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 131. [2022-02-15 02:20:22,240 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) [2022-02-15 02:20:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-02-15 02:20:22,240 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 126 [2022-02-15 02:20:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-02-15 02:20:22,240 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) [2022-02-15 02:20:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-02-15 02:20:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 02:20:22,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:22,241 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] [2022-02-15 02:20:22,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 02:20:22,241 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:22,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1715613841, now seen corresponding path program 50 times [2022-02-15 02:20:22,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:22,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966353633] [2022-02-15 02:20:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:22,893 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:22,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:22,991 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,035 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,135 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,186 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,274 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,328 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:23,329 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:25,144 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:25,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966353633] [2022-02-15 02:20:25,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [966353633] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:25,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:25,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 02:20:25,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273690929] [2022-02-15 02:20:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:25,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 02:20:25,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 02:20:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=3261, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:20:25,146 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) [2022-02-15 02:20:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:27,332 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2022-02-15 02:20:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 02:20:27,332 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 [2022-02-15 02:20:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:27,333 INFO L225 Difference]: With dead ends: 162 [2022-02-15 02:20:27,333 INFO L226 Difference]: Without dead ends: 149 [2022-02-15 02:20:27,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 44 SyntacticMatches, 28 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3180 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=831, Invalid=12741, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:20:27,334 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 196 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-15 02:20:27,334 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] [2022-02-15 02:20:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-15 02:20:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 132. [2022-02-15 02:20:27,426 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) [2022-02-15 02:20:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2022-02-15 02:20:27,426 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 129 [2022-02-15 02:20:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:27,426 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2022-02-15 02:20:27,427 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) [2022-02-15 02:20:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2022-02-15 02:20:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-02-15 02:20:27,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:27,427 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] [2022-02-15 02:20:27,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 02:20:27,427 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1496408589, now seen corresponding path program 51 times [2022-02-15 02:20:27,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:27,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806405159] [2022-02-15 02:20:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:27,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,034 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,156 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,203 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,329 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:28,376 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:30,105 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:30,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806405159] [2022-02-15 02:20:30,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [806405159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:30,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:30,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 02:20:30,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655892407] [2022-02-15 02:20:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:30,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 02:20:30,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 02:20:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3377, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:20:30,108 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) [2022-02-15 02:20:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:32,888 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2022-02-15 02:20:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 02:20:32,888 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 [2022-02-15 02:20:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:32,889 INFO L225 Difference]: With dead ends: 164 [2022-02-15 02:20:32,889 INFO L226 Difference]: Without dead ends: 151 [2022-02-15 02:20:32,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 41 SyntacticMatches, 32 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=843, Invalid=13199, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:20:32,891 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 200 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:32,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 63 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:20:32,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-02-15 02:20:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 134. [2022-02-15 02:20:33,011 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) [2022-02-15 02:20:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2022-02-15 02:20:33,012 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 131 [2022-02-15 02:20:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:33,012 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2022-02-15 02:20:33,012 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) [2022-02-15 02:20:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2022-02-15 02:20:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 02:20:33,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:33,012 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] [2022-02-15 02:20:33,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 02:20:33,013 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash 168477995, now seen corresponding path program 52 times [2022-02-15 02:20:33,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:33,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933437581] [2022-02-15 02:20:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:33,653 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,847 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:33,985 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:34,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:34,032 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:35,928 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:35,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933437581] [2022-02-15 02:20:35,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1933437581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:35,928 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:35,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 02:20:35,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905494427] [2022-02-15 02:20:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:35,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 02:20:35,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 02:20:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3495, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:20:35,930 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) [2022-02-15 02:20:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:38,427 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2022-02-15 02:20:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 02:20:38,427 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 [2022-02-15 02:20:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:38,428 INFO L225 Difference]: With dead ends: 166 [2022-02-15 02:20:38,428 INFO L226 Difference]: Without dead ends: 153 [2022-02-15 02:20:38,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 47 SyntacticMatches, 27 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3543 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=855, Invalid=13665, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:20:38,430 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:38,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 73 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:20:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-02-15 02:20:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2022-02-15 02:20:38,554 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) [2022-02-15 02:20:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2022-02-15 02:20:38,554 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 133 [2022-02-15 02:20:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:38,555 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2022-02-15 02:20:38,555 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) [2022-02-15 02:20:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2022-02-15 02:20:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-15 02:20:38,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:38,555 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] [2022-02-15 02:20:38,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 02:20:38,556 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:38,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:38,567 INFO L85 PathProgramCache]: Analyzing trace with hash -367535927, now seen corresponding path program 53 times [2022-02-15 02:20:38,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:38,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225921807] [2022-02-15 02:20:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:39,099 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,159 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,220 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,274 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,359 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:39,359 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:41,406 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:41,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225921807] [2022-02-15 02:20:41,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1225921807] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:41,406 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:41,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 02:20:41,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402450527] [2022-02-15 02:20:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:41,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 02:20:41,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 02:20:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3615, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:20:41,407 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) [2022-02-15 02:20:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:44,269 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-02-15 02:20:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 02:20:44,270 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 [2022-02-15 02:20:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:44,271 INFO L225 Difference]: With dead ends: 168 [2022-02-15 02:20:44,271 INFO L226 Difference]: Without dead ends: 155 [2022-02-15 02:20:44,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 54 SyntacticMatches, 21 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3640 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=867, Invalid=14139, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 02:20:44,272 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 230 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6471 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:44,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 33 Invalid, 6652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 6471 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:20:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-02-15 02:20:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 138. [2022-02-15 02:20:44,367 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) [2022-02-15 02:20:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2022-02-15 02:20:44,367 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 135 [2022-02-15 02:20:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:44,367 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2022-02-15 02:20:44,367 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) [2022-02-15 02:20:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2022-02-15 02:20:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 02:20:44,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:44,368 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] [2022-02-15 02:20:44,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 02:20:44,368 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash -80839449, now seen corresponding path program 54 times [2022-02-15 02:20:44,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:44,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911899286] [2022-02-15 02:20:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:45,045 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,073 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,138 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,168 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,214 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,300 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,339 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:45,405 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:47,299 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:47,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911899286] [2022-02-15 02:20:47,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1911899286] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:47,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:47,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-15 02:20:47,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468440863] [2022-02-15 02:20:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 02:20:47,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 02:20:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3737, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:20:47,301 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) [2022-02-15 02:20:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:50,030 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2022-02-15 02:20:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 02:20:50,031 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 [2022-02-15 02:20:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:50,031 INFO L225 Difference]: With dead ends: 170 [2022-02-15 02:20:50,031 INFO L226 Difference]: Without dead ends: 157 [2022-02-15 02:20:50,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 45 SyntacticMatches, 31 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=879, Invalid=14621, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 02:20:50,033 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 216 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 6762 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:50,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 143 Invalid, 6933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6762 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:20:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-02-15 02:20:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-02-15 02:20:50,139 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) [2022-02-15 02:20:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2022-02-15 02:20:50,139 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 137 [2022-02-15 02:20:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:50,140 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2022-02-15 02:20:50,140 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) [2022-02-15 02:20:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2022-02-15 02:20:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-15 02:20:50,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:50,140 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] [2022-02-15 02:20:50,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 02:20:50,140 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 556568965, now seen corresponding path program 55 times [2022-02-15 02:20:50,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:50,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981115880] [2022-02-15 02:20:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:50,740 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,934 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:51,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:51,023 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:53,392 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:53,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981115880] [2022-02-15 02:20:53,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [981115880] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:53,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:53,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-15 02:20:53,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695450471] [2022-02-15 02:20:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:53,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 02:20:53,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 02:20:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3861, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:20:53,393 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) [2022-02-15 02:20:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:56,606 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2022-02-15 02:20:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 02:20:56,607 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 [2022-02-15 02:20:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:56,607 INFO L225 Difference]: With dead ends: 174 [2022-02-15 02:20:56,607 INFO L226 Difference]: Without dead ends: 161 [2022-02-15 02:20:56,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 52 SyntacticMatches, 25 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4023 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=891, Invalid=15111, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 02:20:56,608 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 220 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6823 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:56,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 83 Invalid, 6999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 6823 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:20:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-15 02:20:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2022-02-15 02:20:56,712 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) [2022-02-15 02:20:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-02-15 02:20:56,713 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 139 [2022-02-15 02:20:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-02-15 02:20:56,713 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) [2022-02-15 02:20:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-02-15 02:20:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-15 02:20:56,714 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:56,714 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] [2022-02-15 02:20:56,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 02:20:56,714 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1074268509, now seen corresponding path program 56 times [2022-02-15 02:20:56,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:56,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994857171] [2022-02-15 02:20:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:57,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,342 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,532 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,565 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,604 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,656 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:57,666 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:57,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:59,549 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:59,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994857171] [2022-02-15 02:20:59,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [994857171] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:59,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:59,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-15 02:20:59,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405256014] [2022-02-15 02:20:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:59,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-15 02:20:59,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:59,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-15 02:20:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3987, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 02:20:59,552 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) [2022-02-15 02:21:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:02,525 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2022-02-15 02:21:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 02:21:02,527 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 [2022-02-15 02:21:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:02,528 INFO L225 Difference]: With dead ends: 175 [2022-02-15 02:21:02,528 INFO L226 Difference]: Without dead ends: 162 [2022-02-15 02:21:02,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 45 SyntacticMatches, 33 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4434 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=903, Invalid=15609, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 02:21:02,530 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 214 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6523 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:02,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 98 Invalid, 6684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 6523 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:21:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-02-15 02:21:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2022-02-15 02:21:02,717 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) [2022-02-15 02:21:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2022-02-15 02:21:02,717 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 141 [2022-02-15 02:21:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:02,717 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2022-02-15 02:21:02,717 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) [2022-02-15 02:21:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2022-02-15 02:21:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-02-15 02:21:02,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:02,718 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] [2022-02-15 02:21:02,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 02:21:02,719 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash 676891370, now seen corresponding path program 57 times [2022-02-15 02:21:02,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:02,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887338687] [2022-02-15 02:21:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:03,483 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,514 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,554 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,610 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,674 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,710 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,774 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,823 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:03,823 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:05,699 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:05,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887338687] [2022-02-15 02:21:05,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1887338687] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:05,700 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:05,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-15 02:21:05,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718282690] [2022-02-15 02:21:05,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:05,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-15 02:21:05,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-15 02:21:05,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=4115, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:21:05,701 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) [2022-02-15 02:21:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:08,402 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2022-02-15 02:21:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 02:21:08,402 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 [2022-02-15 02:21:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:08,403 INFO L225 Difference]: With dead ends: 177 [2022-02-15 02:21:08,403 INFO L226 Difference]: Without dead ends: 164 [2022-02-15 02:21:08,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 46 SyntacticMatches, 34 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=915, Invalid=16115, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 02:21:08,405 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 263 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7022 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:08,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 48 Invalid, 7233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 7022 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:21:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-15 02:21:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2022-02-15 02:21:08,545 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) [2022-02-15 02:21:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2022-02-15 02:21:08,545 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 144 [2022-02-15 02:21:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:08,545 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2022-02-15 02:21:08,546 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) [2022-02-15 02:21:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2022-02-15 02:21:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-15 02:21:08,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:08,546 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] [2022-02-15 02:21:08,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 02:21:08,547 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1408554296, now seen corresponding path program 58 times [2022-02-15 02:21:08,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:08,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864448866] [2022-02-15 02:21:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:08,989 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,012 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,114 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,244 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,284 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,284 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:11,874 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:11,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864448866] [2022-02-15 02:21:11,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1864448866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:11,875 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:11,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-15 02:21:11,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313527980] [2022-02-15 02:21:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:11,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-15 02:21:11,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:11,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-15 02:21:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=4245, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 02:21:11,876 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) [2022-02-15 02:21:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:15,604 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2022-02-15 02:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 02:21:15,606 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 [2022-02-15 02:21:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:15,616 INFO L225 Difference]: With dead ends: 179 [2022-02-15 02:21:15,617 INFO L226 Difference]: Without dead ends: 166 [2022-02-15 02:21:15,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 47 SyntacticMatches, 34 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4647 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=927, Invalid=16629, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 02:21:15,618 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 231 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7383 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:15,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 43 Invalid, 7570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 7383 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:21:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-02-15 02:21:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2022-02-15 02:21:15,793 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) [2022-02-15 02:21:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2022-02-15 02:21:15,795 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 146 [2022-02-15 02:21:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2022-02-15 02:21:15,796 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) [2022-02-15 02:21:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2022-02-15 02:21:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-15 02:21:15,796 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:15,796 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] [2022-02-15 02:21:15,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 02:21:15,797 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash 227887910, now seen corresponding path program 59 times [2022-02-15 02:21:15,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:15,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498041398] [2022-02-15 02:21:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:16,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,423 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,487 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,515 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,552 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,611 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,706 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:16,706 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:19,213 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:19,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498041398] [2022-02-15 02:21:19,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1498041398] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:19,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:19,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-15 02:21:19,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644751213] [2022-02-15 02:21:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-15 02:21:19,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-15 02:21:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=4377, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:21:19,215 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) [2022-02-15 02:21:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:22,815 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2022-02-15 02:21:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 02:21:22,816 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 [2022-02-15 02:21:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:22,834 INFO L225 Difference]: With dead ends: 181 [2022-02-15 02:21:22,834 INFO L226 Difference]: Without dead ends: 168 [2022-02-15 02:21:22,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 50 SyntacticMatches, 32 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=939, Invalid=17151, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 02:21:22,836 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 197 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6673 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:22,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 53 Invalid, 6821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 6673 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:21:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-15 02:21:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 151. [2022-02-15 02:21:23,080 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) [2022-02-15 02:21:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2022-02-15 02:21:23,081 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 148 [2022-02-15 02:21:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:23,081 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2022-02-15 02:21:23,081 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) [2022-02-15 02:21:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2022-02-15 02:21:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-15 02:21:23,081 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:23,081 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] [2022-02-15 02:21:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 02:21:23,082 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 890817540, now seen corresponding path program 60 times [2022-02-15 02:21:23,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:23,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420572931] [2022-02-15 02:21:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:24,642 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,736 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,778 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,874 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,910 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,944 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:24,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:25,059 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:25,059 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:27,133 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:27,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420572931] [2022-02-15 02:21:27,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [420572931] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:27,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:27,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-15 02:21:27,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568867052] [2022-02-15 02:21:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:27,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-15 02:21:27,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-15 02:21:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=4511, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 02:21:27,135 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) [2022-02-15 02:21:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:30,520 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2022-02-15 02:21:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 02:21:30,521 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 [2022-02-15 02:21:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:30,522 INFO L225 Difference]: With dead ends: 183 [2022-02-15 02:21:30,522 INFO L226 Difference]: Without dead ends: 170 [2022-02-15 02:21:30,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 50 SyntacticMatches, 33 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4834 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=951, Invalid=17681, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 02:21:30,523 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 199 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 7719 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:30,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 183 Invalid, 7869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 7719 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 02:21:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-02-15 02:21:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2022-02-15 02:21:30,694 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) [2022-02-15 02:21:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-02-15 02:21:30,695 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 150 [2022-02-15 02:21:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:30,695 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-02-15 02:21:30,695 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) [2022-02-15 02:21:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-02-15 02:21:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-15 02:21:30,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:30,696 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] [2022-02-15 02:21:30,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 02:21:30,696 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1983935134, now seen corresponding path program 61 times [2022-02-15 02:21:30,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:30,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703958279] [2022-02-15 02:21:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:31,516 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,578 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,672 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,836 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:31,837 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:34,475 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:34,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703958279] [2022-02-15 02:21:34,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [703958279] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:34,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:34,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-15 02:21:34,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586652212] [2022-02-15 02:21:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:34,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 02:21:34,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 02:21:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=4647, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:21:34,492 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) [2022-02-15 02:21:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:37,765 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2022-02-15 02:21:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-15 02:21:37,765 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 [2022-02-15 02:21:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:37,766 INFO L225 Difference]: With dead ends: 185 [2022-02-15 02:21:37,766 INFO L226 Difference]: Without dead ends: 172 [2022-02-15 02:21:37,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 44 SyntacticMatches, 40 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=963, Invalid=18219, Unknown=0, NotChecked=0, Total=19182 [2022-02-15 02:21:37,768 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 237 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7832 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:37,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 78 Invalid, 8025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 7832 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 02:21:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-15 02:21:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2022-02-15 02:21:37,892 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) [2022-02-15 02:21:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2022-02-15 02:21:37,892 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 152 [2022-02-15 02:21:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:37,892 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2022-02-15 02:21:37,893 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) [2022-02-15 02:21:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2022-02-15 02:21:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-15 02:21:37,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:37,912 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] [2022-02-15 02:21:37,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 02:21:37,912 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1337683776, now seen corresponding path program 62 times [2022-02-15 02:21:37,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:37,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561304542] [2022-02-15 02:21:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:38,454 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,481 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,515 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,661 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,696 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,733 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:38,734 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:40,996 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:40,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561304542] [2022-02-15 02:21:40,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1561304542] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:40,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:40,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-15 02:21:40,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297158530] [2022-02-15 02:21:40,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:40,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-15 02:21:40,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-15 02:21:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 02:21:40,998 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) [2022-02-15 02:21:44,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:44,462 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2022-02-15 02:21:44,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 02:21:44,462 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 [2022-02-15 02:21:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:44,463 INFO L225 Difference]: With dead ends: 189 [2022-02-15 02:21:44,463 INFO L226 Difference]: Without dead ends: 176 [2022-02-15 02:21:44,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 53 SyntacticMatches, 32 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5254 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=975, Invalid=18765, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 02:21:44,464 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 234 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8333 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:44,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 168 Invalid, 8525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 8333 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:21:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-15 02:21:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2022-02-15 02:21:44,604 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) [2022-02-15 02:21:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-02-15 02:21:44,604 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 154 [2022-02-15 02:21:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:44,605 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-02-15 02:21:44,605 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) [2022-02-15 02:21:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-02-15 02:21:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-02-15 02:21:44,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:44,606 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] [2022-02-15 02:21:44,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 02:21:44,606 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2042211938, now seen corresponding path program 63 times [2022-02-15 02:21:44,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:44,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442258394] [2022-02-15 02:21:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:45,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,324 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,387 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,412 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,438 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,475 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,514 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:45,514 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:48,340 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:48,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442258394] [2022-02-15 02:21:48,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [442258394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:48,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:48,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-15 02:21:48,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753935583] [2022-02-15 02:21:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:48,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-15 02:21:48,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-15 02:21:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=4925, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:21:48,343 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) [2022-02-15 02:21:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:51,871 INFO L93 Difference]: Finished difference Result 190 states and 206 transitions. [2022-02-15 02:21:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 02:21:51,871 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 [2022-02-15 02:21:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:51,871 INFO L225 Difference]: With dead ends: 190 [2022-02-15 02:21:51,872 INFO L226 Difference]: Without dead ends: 177 [2022-02-15 02:21:51,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 44 SyntacticMatches, 42 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5584 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=987, Invalid=19319, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 02:21:51,873 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 233 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 8052 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:51,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 153 Invalid, 8245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 8052 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:21:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-15 02:21:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2022-02-15 02:21:52,022 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) [2022-02-15 02:21:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2022-02-15 02:21:52,023 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 156 [2022-02-15 02:21:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:52,023 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2022-02-15 02:21:52,023 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) [2022-02-15 02:21:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2022-02-15 02:21:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-02-15 02:21:52,023 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:52,023 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] [2022-02-15 02:21:52,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 02:21:52,024 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1084623375, now seen corresponding path program 64 times [2022-02-15 02:21:52,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:52,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166142525] [2022-02-15 02:21:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:52,760 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,789 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,891 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,965 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:52,993 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:53,026 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:53,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:53,068 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:55,726 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:55,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166142525] [2022-02-15 02:21:55,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [166142525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:55,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:55,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-15 02:21:55,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606265432] [2022-02-15 02:21:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:55,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-15 02:21:55,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-15 02:21:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=5067, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 02:21:55,728 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) [2022-02-15 02:21:59,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:59,714 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2022-02-15 02:21:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 02:21:59,715 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 [2022-02-15 02:21:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:59,715 INFO L225 Difference]: With dead ends: 192 [2022-02-15 02:21:59,715 INFO L226 Difference]: Without dead ends: 179 [2022-02-15 02:21:59,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 58 SyntacticMatches, 30 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5553 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=999, Invalid=19881, Unknown=0, NotChecked=0, Total=20880 [2022-02-15 02:21:59,717 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 252 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8876 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:59,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 23 Invalid, 9083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 8876 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 02:21:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-15 02:21:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 162. [2022-02-15 02:21:59,880 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) [2022-02-15 02:21:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2022-02-15 02:21:59,880 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 159 [2022-02-15 02:21:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2022-02-15 02:21:59,880 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) [2022-02-15 02:21:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2022-02-15 02:21:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-15 02:21:59,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:59,881 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] [2022-02-15 02:21:59,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 02:21:59,881 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash -420121427, now seen corresponding path program 65 times [2022-02-15 02:21:59,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:59,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833288677] [2022-02-15 02:21:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:00,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,741 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,869 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,925 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:00,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:01,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:01,061 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:01,116 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:01,116 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:01,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:03,591 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:03,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833288677] [2022-02-15 02:22:03,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [833288677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:03,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:03,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-15 02:22:03,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203268793] [2022-02-15 02:22:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:03,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-15 02:22:03,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-15 02:22:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=5211, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:22:03,593 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) [2022-02-15 02:22:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:07,275 INFO L93 Difference]: Finished difference Result 194 states and 210 transitions. [2022-02-15 02:22:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 02:22:07,275 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 [2022-02-15 02:22:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:07,276 INFO L225 Difference]: With dead ends: 194 [2022-02-15 02:22:07,276 INFO L226 Difference]: Without dead ends: 181 [2022-02-15 02:22:07,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 55 SyntacticMatches, 34 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5621 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1011, Invalid=20451, Unknown=0, NotChecked=0, Total=21462 [2022-02-15 02:22:07,277 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 330 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9159 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:07,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 183 Invalid, 9444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 9159 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:22:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-02-15 02:22:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2022-02-15 02:22:07,414 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) [2022-02-15 02:22:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 168 transitions. [2022-02-15 02:22:07,414 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 168 transitions. Word has length 161 [2022-02-15 02:22:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:07,414 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 168 transitions. [2022-02-15 02:22:07,414 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) [2022-02-15 02:22:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 168 transitions. [2022-02-15 02:22:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-02-15 02:22:07,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:07,415 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] [2022-02-15 02:22:07,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 02:22:07,415 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash 924102603, now seen corresponding path program 66 times [2022-02-15 02:22:07,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:07,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457680140] [2022-02-15 02:22:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:07,934 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:07,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:07,996 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,087 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,143 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:08,245 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:10,955 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:10,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457680140] [2022-02-15 02:22:10,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [457680140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:10,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:10,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-15 02:22:10,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784005220] [2022-02-15 02:22:10,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:10,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 02:22:10,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:10,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 02:22:10,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=5357, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 02:22:10,957 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) [2022-02-15 02:22:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:14,702 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2022-02-15 02:22:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 02:22:14,702 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 [2022-02-15 02:22:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:14,703 INFO L225 Difference]: With dead ends: 196 [2022-02-15 02:22:14,703 INFO L226 Difference]: Without dead ends: 183 [2022-02-15 02:22:14,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 58 SyntacticMatches, 32 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5935 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1023, Invalid=21029, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 02:22:14,704 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 202 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 8234 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:14,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 143 Invalid, 8392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 8234 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:22:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-15 02:22:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 166. [2022-02-15 02:22:14,870 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) [2022-02-15 02:22:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2022-02-15 02:22:14,870 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 163 [2022-02-15 02:22:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2022-02-15 02:22:14,870 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) [2022-02-15 02:22:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2022-02-15 02:22:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-02-15 02:22:14,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:14,871 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] [2022-02-15 02:22:14,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 02:22:14,871 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash -61760663, now seen corresponding path program 67 times [2022-02-15 02:22:14,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:14,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052817422] [2022-02-15 02:22:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:15,623 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,651 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,752 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,776 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,805 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,833 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,893 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:15,893 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:18,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:18,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052817422] [2022-02-15 02:22:18,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052817422] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:18,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:18,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-15 02:22:18,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801722409] [2022-02-15 02:22:18,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:18,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-15 02:22:18,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-15 02:22:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=5505, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:22:18,643 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) [2022-02-15 02:22:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:22,574 INFO L93 Difference]: Finished difference Result 198 states and 214 transitions. [2022-02-15 02:22:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 02:22:22,574 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 [2022-02-15 02:22:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:22,575 INFO L225 Difference]: With dead ends: 198 [2022-02-15 02:22:22,575 INFO L226 Difference]: Without dead ends: 185 [2022-02-15 02:22:22,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 61 SyntacticMatches, 30 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6067 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1035, Invalid=21615, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 02:22:22,577 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 246 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10017 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:22,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 248 Invalid, 10214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 10017 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 02:22:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-02-15 02:22:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2022-02-15 02:22:22,760 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) [2022-02-15 02:22:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2022-02-15 02:22:22,760 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 165 [2022-02-15 02:22:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:22,760 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2022-02-15 02:22:22,761 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) [2022-02-15 02:22:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2022-02-15 02:22:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-02-15 02:22:22,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:22,761 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] [2022-02-15 02:22:22,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 02:22:22,762 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1711413127, now seen corresponding path program 68 times [2022-02-15 02:22:22,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:22,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094357653] [2022-02-15 02:22:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:23,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,380 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,416 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,443 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,470 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,500 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,549 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,582 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,651 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,652 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:23,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:27,102 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:27,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094357653] [2022-02-15 02:22:27,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2094357653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:27,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:27,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-15 02:22:27,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066250017] [2022-02-15 02:22:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:27,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-15 02:22:27,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-15 02:22:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=5655, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:22:27,105 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) [2022-02-15 02:22:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:30,992 INFO L93 Difference]: Finished difference Result 200 states and 216 transitions. [2022-02-15 02:22:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 02:22:30,992 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 [2022-02-15 02:22:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:30,993 INFO L225 Difference]: With dead ends: 200 [2022-02-15 02:22:30,993 INFO L226 Difference]: Without dead ends: 187 [2022-02-15 02:22:30,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 48 SyntacticMatches, 44 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6460 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1047, Invalid=22209, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 02:22:30,995 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 206 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8731 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:30,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 118 Invalid, 8893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 8731 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:22:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-02-15 02:22:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 170. [2022-02-15 02:22:31,181 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) [2022-02-15 02:22:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2022-02-15 02:22:31,181 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 167 [2022-02-15 02:22:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:31,182 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2022-02-15 02:22:31,182 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) [2022-02-15 02:22:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2022-02-15 02:22:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-15 02:22:31,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:31,183 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] [2022-02-15 02:22:31,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 02:22:31,183 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 629408805, now seen corresponding path program 69 times [2022-02-15 02:22:31,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:31,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841374874] [2022-02-15 02:22:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:31,732 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,978 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,025 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,074 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,136 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,358 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:32,358 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:32,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:35,615 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:35,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841374874] [2022-02-15 02:22:35,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [841374874] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:35,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:35,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-15 02:22:35,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465880877] [2022-02-15 02:22:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:35,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-15 02:22:35,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-15 02:22:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5807, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:22:35,617 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) [2022-02-15 02:22:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:40,135 INFO L93 Difference]: Finished difference Result 204 states and 221 transitions. [2022-02-15 02:22:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 02:22:40,135 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 [2022-02-15 02:22:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:40,136 INFO L225 Difference]: With dead ends: 204 [2022-02-15 02:22:40,136 INFO L226 Difference]: Without dead ends: 191 [2022-02-15 02:22:40,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 52 SyntacticMatches, 41 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6652 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1059, Invalid=22811, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 02:22:40,138 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 265 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9320 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:40,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 73 Invalid, 9541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 9320 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 02:22:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-02-15 02:22:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2022-02-15 02:22:40,332 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) [2022-02-15 02:22:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2022-02-15 02:22:40,333 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 169 [2022-02-15 02:22:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:40,333 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2022-02-15 02:22:40,333 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) [2022-02-15 02:22:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2022-02-15 02:22:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-02-15 02:22:40,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:40,334 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] [2022-02-15 02:22:40,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 02:22:40,334 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash 205340995, now seen corresponding path program 70 times [2022-02-15 02:22:40,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:40,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012392746] [2022-02-15 02:22:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:40,874 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:40,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:40,935 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:40,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:40,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,015 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,103 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,151 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:41,151 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:43,290 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:43,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012392746] [2022-02-15 02:22:43,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1012392746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:43,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:43,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-15 02:22:43,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502685371] [2022-02-15 02:22:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:43,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-15 02:22:43,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-15 02:22:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=5961, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 02:22:43,293 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) [2022-02-15 02:22:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:47,608 INFO L93 Difference]: Finished difference Result 205 states and 221 transitions. [2022-02-15 02:22:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 02:22:47,608 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 [2022-02-15 02:22:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:47,609 INFO L225 Difference]: With dead ends: 205 [2022-02-15 02:22:47,609 INFO L226 Difference]: Without dead ends: 192 [2022-02-15 02:22:47,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 64 SyntacticMatches, 30 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6634 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1071, Invalid=23421, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 02:22:47,611 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 218 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8565 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:47,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 43 Invalid, 8739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 8565 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 02:22:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-15 02:22:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 176. [2022-02-15 02:22:47,865 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) [2022-02-15 02:22:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2022-02-15 02:22:47,865 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 171 [2022-02-15 02:22:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:47,865 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2022-02-15 02:22:47,866 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) [2022-02-15 02:22:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2022-02-15 02:22:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-02-15 02:22:47,866 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:47,866 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] [2022-02-15 02:22:47,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 02:22:47,867 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash -606094262, now seen corresponding path program 71 times [2022-02-15 02:22:47,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:47,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73138574] [2022-02-15 02:22:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:48,495 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,577 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,614 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,757 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,794 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,845 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:52,107 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:52,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73138574] [2022-02-15 02:22:52,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [73138574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:52,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:52,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-15 02:22:52,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827359467] [2022-02-15 02:22:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:52,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-15 02:22:52,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-15 02:22:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=6117, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:22:52,110 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) [2022-02-15 02:22:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:56,148 INFO L93 Difference]: Finished difference Result 207 states and 223 transitions. [2022-02-15 02:22:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 02:22:56,149 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 [2022-02-15 02:22:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:56,150 INFO L225 Difference]: With dead ends: 207 [2022-02-15 02:22:56,150 INFO L226 Difference]: Without dead ends: 194 [2022-02-15 02:22:56,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 53 SyntacticMatches, 43 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7141 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1083, Invalid=24039, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 02:22:56,151 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 258 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9254 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:56,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 153 Invalid, 9466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 9254 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 02:22:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-15 02:22:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2022-02-15 02:22:56,326 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) [2022-02-15 02:22:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2022-02-15 02:22:56,327 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 174 [2022-02-15 02:22:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:56,327 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2022-02-15 02:22:56,327 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) [2022-02-15 02:22:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2022-02-15 02:22:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-02-15 02:22:56,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:56,328 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] [2022-02-15 02:22:56,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 02:22:56,328 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1702132696, now seen corresponding path program 72 times [2022-02-15 02:22:56,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:56,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975277443] [2022-02-15 02:22:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:56,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,891 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,941 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,974 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:56,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,060 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,098 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,098 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:57,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:59,758 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:59,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975277443] [2022-02-15 02:22:59,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1975277443] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:59,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:59,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-15 02:22:59,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587981962] [2022-02-15 02:22:59,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:59,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-15 02:22:59,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-15 02:22:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=6275, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 02:22:59,760 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) [2022-02-15 02:23:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:04,511 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2022-02-15 02:23:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-15 02:23:04,511 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 [2022-02-15 02:23:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:04,512 INFO L225 Difference]: With dead ends: 209 [2022-02-15 02:23:04,512 INFO L226 Difference]: Without dead ends: 196 [2022-02-15 02:23:04,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 58 SyntacticMatches, 39 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7042 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1095, Invalid=24665, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 02:23:04,514 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 10745 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:04,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 188 Invalid, 10960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 10745 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 02:23:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-15 02:23:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 179. [2022-02-15 02:23:04,741 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) [2022-02-15 02:23:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2022-02-15 02:23:04,741 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 176 [2022-02-15 02:23:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:04,742 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2022-02-15 02:23:04,742 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) [2022-02-15 02:23:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2022-02-15 02:23:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-02-15 02:23:04,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:04,742 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] [2022-02-15 02:23:04,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 02:23:04,743 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1566887046, now seen corresponding path program 73 times [2022-02-15 02:23:04,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:04,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302338311] [2022-02-15 02:23:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:05,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,663 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,706 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,748 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,873 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,913 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,970 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:05,970 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:08,769 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:08,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302338311] [2022-02-15 02:23:08,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302338311] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:08,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:08,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-15 02:23:08,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596455945] [2022-02-15 02:23:08,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-15 02:23:08,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-15 02:23:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=6435, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:23:08,771 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) [2022-02-15 02:23:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:13,218 INFO L93 Difference]: Finished difference Result 211 states and 227 transitions. [2022-02-15 02:23:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 02:23:13,219 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 [2022-02-15 02:23:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:13,220 INFO L225 Difference]: With dead ends: 211 [2022-02-15 02:23:13,220 INFO L226 Difference]: Without dead ends: 198 [2022-02-15 02:23:13,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 54 SyntacticMatches, 44 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7412 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1107, Invalid=25299, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 02:23:13,221 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 339 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11210 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:13,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 28 Invalid, 11510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 11210 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 02:23:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-02-15 02:23:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 181. [2022-02-15 02:23:13,396 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) [2022-02-15 02:23:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2022-02-15 02:23:13,396 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 178 [2022-02-15 02:23:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:13,397 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2022-02-15 02:23:13,397 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) [2022-02-15 02:23:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2022-02-15 02:23:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-15 02:23:13,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:13,397 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] [2022-02-15 02:23:13,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 02:23:13,398 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -821201564, now seen corresponding path program 74 times [2022-02-15 02:23:13,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:13,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057976172] [2022-02-15 02:23:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:14,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,305 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,330 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,361 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,387 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,413 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,448 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,490 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:14,490 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:18,469 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:18,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057976172] [2022-02-15 02:23:18,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057976172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:18,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:18,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-15 02:23:18,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854546441] [2022-02-15 02:23:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 02:23:18,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 02:23:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=6597, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 02:23:18,470 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) [2022-02-15 02:23:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:23,974 INFO L93 Difference]: Finished difference Result 213 states and 229 transitions. [2022-02-15 02:23:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 02:23:23,974 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 [2022-02-15 02:23:23,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:23,975 INFO L225 Difference]: With dead ends: 213 [2022-02-15 02:23:23,975 INFO L226 Difference]: Without dead ends: 200 [2022-02-15 02:23:23,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 58 SyntacticMatches, 41 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7403 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1119, Invalid=25941, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 02:23:23,977 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 297 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 12247 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:23,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 268 Invalid, 12503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 12247 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 02:23:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-02-15 02:23:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-02-15 02:23:24,248 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) [2022-02-15 02:23:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2022-02-15 02:23:24,248 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 180 [2022-02-15 02:23:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:24,249 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2022-02-15 02:23:24,249 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) [2022-02-15 02:23:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2022-02-15 02:23:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-02-15 02:23:24,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:24,250 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] [2022-02-15 02:23:24,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 02:23:24,250 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2033147586, now seen corresponding path program 75 times [2022-02-15 02:23:24,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:24,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348476826] [2022-02-15 02:23:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:25,045 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,145 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,186 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,367 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,425 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,531 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,532 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:29,324 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:29,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348476826] [2022-02-15 02:23:29,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [348476826] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:29,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:29,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-15 02:23:29,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300118850] [2022-02-15 02:23:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 02:23:29,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 02:23:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=6761, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:23:29,325 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) [2022-02-15 02:23:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:34,963 INFO L93 Difference]: Finished difference Result 215 states and 231 transitions. [2022-02-15 02:23:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 02:23:34,963 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 [2022-02-15 02:23:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:34,964 INFO L225 Difference]: With dead ends: 215 [2022-02-15 02:23:34,964 INFO L226 Difference]: Without dead ends: 202 [2022-02-15 02:23:34,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 63 SyntacticMatches, 37 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7425 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1131, Invalid=26591, Unknown=0, NotChecked=0, Total=27722 [2022-02-15 02:23:34,967 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 317 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10685 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:34,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 53 Invalid, 10956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 10685 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 02:23:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-02-15 02:23:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-02-15 02:23:35,151 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) [2022-02-15 02:23:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2022-02-15 02:23:35,151 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 182 [2022-02-15 02:23:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:35,152 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2022-02-15 02:23:35,152 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) [2022-02-15 02:23:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2022-02-15 02:23:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-02-15 02:23:35,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:35,152 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] [2022-02-15 02:23:35,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-15 02:23:35,153 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash 578578592, now seen corresponding path program 76 times [2022-02-15 02:23:35,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:35,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999167280] [2022-02-15 02:23:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:35,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,784 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,808 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,884 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,937 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,991 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,992 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:38,609 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:38,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999167280] [2022-02-15 02:23:38,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [999167280] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:38,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:38,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-15 02:23:38,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015555542] [2022-02-15 02:23:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:38,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 02:23:38,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 02:23:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=6927, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 02:23:38,611 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) [2022-02-15 02:23:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:43,422 INFO L93 Difference]: Finished difference Result 219 states and 236 transitions. [2022-02-15 02:23:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 02:23:43,423 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 [2022-02-15 02:23:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:43,424 INFO L225 Difference]: With dead ends: 219 [2022-02-15 02:23:43,424 INFO L226 Difference]: Without dead ends: 206 [2022-02-15 02:23:43,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 64 SyntacticMatches, 37 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7881 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1143, Invalid=27249, Unknown=0, NotChecked=0, Total=28392 [2022-02-15 02:23:43,426 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 279 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12460 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:43,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 88 Invalid, 12697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 12460 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 02:23:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-15 02:23:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 189. [2022-02-15 02:23:43,688 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) [2022-02-15 02:23:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2022-02-15 02:23:43,689 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 184 [2022-02-15 02:23:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2022-02-15 02:23:43,689 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) [2022-02-15 02:23:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2022-02-15 02:23:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-15 02:23:43,694 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:43,694 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] [2022-02-15 02:23:43,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-15 02:23:43,695 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1397853442, now seen corresponding path program 77 times [2022-02-15 02:23:43,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:43,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841536269] [2022-02-15 02:23:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:44,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,317 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,349 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,428 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,453 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,581 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:44,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:48,304 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:48,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841536269] [2022-02-15 02:23:48,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841536269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:48,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:48,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-15 02:23:48,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126486786] [2022-02-15 02:23:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:48,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-15 02:23:48,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-15 02:23:48,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=7095, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:23:48,307 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) [2022-02-15 02:23:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:53,877 INFO L93 Difference]: Finished difference Result 220 states and 236 transitions. [2022-02-15 02:23:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 02:23:53,877 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 [2022-02-15 02:23:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:53,878 INFO L225 Difference]: With dead ends: 220 [2022-02-15 02:23:53,878 INFO L226 Difference]: Without dead ends: 207 [2022-02-15 02:23:53,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 65 SyntacticMatches, 37 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7993 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1155, Invalid=27915, Unknown=0, NotChecked=0, Total=29070 [2022-02-15 02:23:53,879 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 232 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 13163 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:53,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 308 Invalid, 13353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 13163 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 02:23:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-02-15 02:23:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2022-02-15 02:23:54,126 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) [2022-02-15 02:23:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2022-02-15 02:23:54,126 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 186 [2022-02-15 02:23:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:54,126 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2022-02-15 02:23:54,126 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) [2022-02-15 02:23:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2022-02-15 02:23:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-02-15 02:23:54,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:54,127 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] [2022-02-15 02:23:54,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-15 02:23:54,127 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1335235409, now seen corresponding path program 78 times [2022-02-15 02:23:54,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:54,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004484570] [2022-02-15 02:23:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:54,707 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,772 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,799 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,862 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,941 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:55,005 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:55,005 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:55,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:58,017 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:58,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004484570] [2022-02-15 02:23:58,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004484570] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:58,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:58,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-15 02:23:58,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128776580] [2022-02-15 02:23:58,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:58,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-15 02:23:58,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-15 02:23:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=7265, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 02:23:58,019 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) [2022-02-15 02:24:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:04,176 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2022-02-15 02:24:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 02:24:04,177 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 [2022-02-15 02:24:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:04,177 INFO L225 Difference]: With dead ends: 222 [2022-02-15 02:24:04,177 INFO L226 Difference]: Without dead ends: 209 [2022-02-15 02:24:04,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 62 SyntacticMatches, 42 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8192 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1167, Invalid=28589, Unknown=0, NotChecked=0, Total=29756 [2022-02-15 02:24:04,179 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 272 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 13556 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:04,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 123 Invalid, 13789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 13556 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-15 02:24:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-15 02:24:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2022-02-15 02:24:04,397 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) [2022-02-15 02:24:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2022-02-15 02:24:04,398 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 189 [2022-02-15 02:24:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:04,398 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2022-02-15 02:24:04,398 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) [2022-02-15 02:24:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2022-02-15 02:24:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-02-15 02:24:04,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:04,399 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] [2022-02-15 02:24:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-15 02:24:04,399 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1967861581, now seen corresponding path program 79 times [2022-02-15 02:24:04,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:04,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303344670] [2022-02-15 02:24:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:04,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,949 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,140 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,180 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,275 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:05,341 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:05,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:08,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:08,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303344670] [2022-02-15 02:24:08,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [303344670] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:08,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:08,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-15 02:24:08,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782766662] [2022-02-15 02:24:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:08,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-15 02:24:08,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-15 02:24:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=7437, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:24:08,256 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) [2022-02-15 02:24:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:15,218 INFO L93 Difference]: Finished difference Result 224 states and 240 transitions. [2022-02-15 02:24:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 02:24:15,218 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 [2022-02-15 02:24:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:15,219 INFO L225 Difference]: With dead ends: 224 [2022-02-15 02:24:15,219 INFO L226 Difference]: Without dead ends: 211 [2022-02-15 02:24:15,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 63 SyntacticMatches, 42 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8482 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1179, Invalid=29271, Unknown=0, NotChecked=0, Total=30450 [2022-02-15 02:24:15,221 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 265 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 14326 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:15,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 328 Invalid, 14555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 14326 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-02-15 02:24:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-02-15 02:24:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2022-02-15 02:24:15,432 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) [2022-02-15 02:24:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2022-02-15 02:24:15,432 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 191 [2022-02-15 02:24:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:15,433 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2022-02-15 02:24:15,433 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) [2022-02-15 02:24:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2022-02-15 02:24:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-02-15 02:24:15,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:15,435 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] [2022-02-15 02:24:15,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-15 02:24:15,435 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2031730069, now seen corresponding path program 80 times [2022-02-15 02:24:15,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:15,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719347354] [2022-02-15 02:24:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:16,082 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,112 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,151 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,424 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,470 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:16,470 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:20,994 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:20,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719347354] [2022-02-15 02:24:20,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1719347354] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:20,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:20,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-15 02:24:20,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996743990] [2022-02-15 02:24:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-15 02:24:20,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-15 02:24:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=7611, Unknown=0, NotChecked=0, Total=8010 [2022-02-15 02:24:20,997 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) [2022-02-15 02:24:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:27,083 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2022-02-15 02:24:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 02:24:27,084 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 [2022-02-15 02:24:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:27,085 INFO L225 Difference]: With dead ends: 226 [2022-02-15 02:24:27,085 INFO L226 Difference]: Without dead ends: 213 [2022-02-15 02:24:27,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 60 SyntacticMatches, 46 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8669 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1191, Invalid=29961, Unknown=0, NotChecked=0, Total=31152 [2022-02-15 02:24:27,087 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 268 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 13772 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:27,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 243 Invalid, 14003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 13772 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 02:24:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-15 02:24:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2022-02-15 02:24:27,312 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) [2022-02-15 02:24:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 200 transitions. [2022-02-15 02:24:27,313 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 200 transitions. Word has length 193 [2022-02-15 02:24:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:27,313 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 200 transitions. [2022-02-15 02:24:27,313 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) [2022-02-15 02:24:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 200 transitions. [2022-02-15 02:24:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-02-15 02:24:27,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:27,314 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] [2022-02-15 02:24:27,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-15 02:24:27,314 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1643575799, now seen corresponding path program 81 times [2022-02-15 02:24:27,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:27,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167207482] [2022-02-15 02:24:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:27,951 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:27,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,058 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,154 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,182 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,217 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,259 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:28,259 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:31,252 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:31,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167207482] [2022-02-15 02:24:31,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1167207482] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:31,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:31,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-15 02:24:31,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50997772] [2022-02-15 02:24:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:31,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-15 02:24:31,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-15 02:24:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=7787, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:24:31,254 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) [2022-02-15 02:24:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:37,000 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2022-02-15 02:24:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 02:24:37,000 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 [2022-02-15 02:24:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:37,001 INFO L225 Difference]: With dead ends: 228 [2022-02-15 02:24:37,001 INFO L226 Difference]: Without dead ends: 215 [2022-02-15 02:24:37,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 67 SyntacticMatches, 40 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8903 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1203, Invalid=30659, Unknown=0, NotChecked=0, Total=31862 [2022-02-15 02:24:37,003 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 317 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 13958 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:37,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 213 Invalid, 14238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 13958 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 02:24:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-02-15 02:24:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2022-02-15 02:24:37,253 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) [2022-02-15 02:24:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 202 transitions. [2022-02-15 02:24:37,254 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 202 transitions. Word has length 195 [2022-02-15 02:24:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:37,254 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 202 transitions. [2022-02-15 02:24:37,254 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) [2022-02-15 02:24:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 202 transitions. [2022-02-15 02:24:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-02-15 02:24:37,255 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:37,255 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] [2022-02-15 02:24:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-15 02:24:37,255 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2005490215, now seen corresponding path program 82 times [2022-02-15 02:24:37,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:37,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693379323] [2022-02-15 02:24:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:37,767 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,795 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,859 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,923 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,972 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:38,025 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:38,093 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:38,093 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:41,477 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:41,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693379323] [2022-02-15 02:24:41,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1693379323] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:41,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:41,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-15 02:24:41,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931916348] [2022-02-15 02:24:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-15 02:24:41,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-15 02:24:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=7965, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 02:24:41,479 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) [2022-02-15 02:24:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:46,604 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions. [2022-02-15 02:24:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 02:24:46,605 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 [2022-02-15 02:24:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:46,606 INFO L225 Difference]: With dead ends: 230 [2022-02-15 02:24:46,606 INFO L226 Difference]: Without dead ends: 217 [2022-02-15 02:24:46,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 69 SyntacticMatches, 39 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9057 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1215, Invalid=31365, Unknown=0, NotChecked=0, Total=32580 [2022-02-15 02:24:46,608 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 12074 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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 [2022-02-15 02:24:46,608 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] [2022-02-15 02:24:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-15 02:24:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-02-15 02:24:46,923 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) [2022-02-15 02:24:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2022-02-15 02:24:46,924 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 197 [2022-02-15 02:24:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:46,924 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2022-02-15 02:24:46,924 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) [2022-02-15 02:24:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2022-02-15 02:24:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-02-15 02:24:46,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:46,925 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] [2022-02-15 02:24:46,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-15 02:24:46,925 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash -230351163, now seen corresponding path program 83 times [2022-02-15 02:24:46,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:46,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569228775] [2022-02-15 02:24:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:47,485 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,512 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,546 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,576 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,628 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,656 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,679 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,709 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,775 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:47,775 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:47,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:51,670 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:51,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569228775] [2022-02-15 02:24:51,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [569228775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:51,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:51,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-15 02:24:51,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427694859] [2022-02-15 02:24:51,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:51,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-15 02:24:51,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-15 02:24:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=8145, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:24:51,672 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) [2022-02-15 02:24:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:57,238 INFO L93 Difference]: Finished difference Result 236 states and 254 transitions. [2022-02-15 02:24:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 02:24:57,238 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 [2022-02-15 02:24:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:57,239 INFO L225 Difference]: With dead ends: 236 [2022-02-15 02:24:57,239 INFO L226 Difference]: Without dead ends: 223 [2022-02-15 02:24:57,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 69 SyntacticMatches, 40 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9092 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1227, Invalid=32079, Unknown=0, NotChecked=0, Total=33306 [2022-02-15 02:24:57,242 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 250 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12882 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:57,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 108 Invalid, 13092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 12882 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-15 02:24:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-15 02:24:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2022-02-15 02:24:57,566 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) [2022-02-15 02:24:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2022-02-15 02:24:57,566 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 199 [2022-02-15 02:24:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:57,566 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2022-02-15 02:24:57,566 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) [2022-02-15 02:24:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2022-02-15 02:24:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-02-15 02:24:57,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:57,567 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] [2022-02-15 02:24:57,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-15 02:24:57,568 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1390267421, now seen corresponding path program 84 times [2022-02-15 02:24:57,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:57,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638185891] [2022-02-15 02:24:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:58,084 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,159 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,193 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,268 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,313 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,398 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,451 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,452 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:02,299 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:02,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638185891] [2022-02-15 02:25:02,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1638185891] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:02,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:02,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-15 02:25:02,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436295252] [2022-02-15 02:25:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:02,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-15 02:25:02,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-15 02:25:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=8327, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 02:25:02,301 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) [2022-02-15 02:25:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:08,426 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2022-02-15 02:25:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 02:25:08,427 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 [2022-02-15 02:25:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:08,428 INFO L225 Difference]: With dead ends: 237 [2022-02-15 02:25:08,428 INFO L226 Difference]: Without dead ends: 224 [2022-02-15 02:25:08,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 64 SyntacticMatches, 46 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9496 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1239, Invalid=32801, Unknown=0, NotChecked=0, Total=34040 [2022-02-15 02:25:08,429 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 248 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 14104 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:08,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 228 Invalid, 14312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 14104 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:25:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-15 02:25:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 208. [2022-02-15 02:25:08,663 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) [2022-02-15 02:25:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2022-02-15 02:25:08,663 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 201 [2022-02-15 02:25:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:08,663 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2022-02-15 02:25:08,663 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) [2022-02-15 02:25:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2022-02-15 02:25:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-02-15 02:25:08,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:08,664 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] [2022-02-15 02:25:08,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-15 02:25:08,664 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1003201358, now seen corresponding path program 85 times [2022-02-15 02:25:08,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:08,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893448252] [2022-02-15 02:25:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:09,228 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,307 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,345 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,382 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,529 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:09,631 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:14,158 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:14,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893448252] [2022-02-15 02:25:14,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [893448252] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:14,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:14,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-15 02:25:14,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104592146] [2022-02-15 02:25:14,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:14,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-15 02:25:14,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:14,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-15 02:25:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=8511, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:25:14,159 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) [2022-02-15 02:25:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:20,957 INFO L93 Difference]: Finished difference Result 238 states and 254 transitions. [2022-02-15 02:25:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 02:25:20,959 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 [2022-02-15 02:25:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:20,960 INFO L225 Difference]: With dead ends: 238 [2022-02-15 02:25:20,960 INFO L226 Difference]: Without dead ends: 225 [2022-02-15 02:25:20,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 64 SyntacticMatches, 48 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9866 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1251, Invalid=33531, Unknown=0, NotChecked=0, Total=34782 [2022-02-15 02:25:20,962 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 15785 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:20,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 158 Invalid, 16042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 15785 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-15 02:25:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-15 02:25:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 209. [2022-02-15 02:25:21,184 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) [2022-02-15 02:25:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2022-02-15 02:25:21,185 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 204 [2022-02-15 02:25:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:21,185 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2022-02-15 02:25:21,185 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) [2022-02-15 02:25:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2022-02-15 02:25:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-02-15 02:25:21,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:21,186 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] [2022-02-15 02:25:21,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-15 02:25:21,186 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash 102963807, now seen corresponding path program 86 times [2022-02-15 02:25:21,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:21,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436181821] [2022-02-15 02:25:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:21,796 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:21,796 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:25:21,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,947 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,982 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:22,029 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:22,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:22,080 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:25,639 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:25,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436181821] [2022-02-15 02:25:25,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1436181821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:25,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:25,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-15 02:25:25,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944680803] [2022-02-15 02:25:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:25,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-15 02:25:25,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:25,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-15 02:25:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=8697, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 02:25:25,640 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) [2022-02-15 02:25:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:32,986 INFO L93 Difference]: Finished difference Result 240 states and 256 transitions. [2022-02-15 02:25:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-15 02:25:32,987 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 [2022-02-15 02:25:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:32,988 INFO L225 Difference]: With dead ends: 240 [2022-02-15 02:25:32,989 INFO L226 Difference]: Without dead ends: 227 [2022-02-15 02:25:32,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 69 SyntacticMatches, 45 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9978 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1263, Invalid=34269, Unknown=0, NotChecked=0, Total=35532 [2022-02-15 02:25:32,991 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 304 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14112 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:32,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 118 Invalid, 14378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 14112 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-15 02:25:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-02-15 02:25:33,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 210. [2022-02-15 02:25:33,268 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) [2022-02-15 02:25:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 214 transitions. [2022-02-15 02:25:33,268 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 214 transitions. Word has length 207 [2022-02-15 02:25:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:33,269 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 214 transitions. [2022-02-15 02:25:33,269 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) [2022-02-15 02:25:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 214 transitions. [2022-02-15 02:25:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-02-15 02:25:33,270 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:33,270 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] [2022-02-15 02:25:33,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-15 02:25:33,270 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1097838845, now seen corresponding path program 87 times [2022-02-15 02:25:33,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:33,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692355685] [2022-02-15 02:25:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:34,049 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,077 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,218 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,309 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,370 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:34,370 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:34,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:38,401 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:38,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692355685] [2022-02-15 02:25:38,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692355685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:38,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:38,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-15 02:25:38,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217256052] [2022-02-15 02:25:38,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:38,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-15 02:25:38,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-15 02:25:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=8885, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:25:38,402 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) [2022-02-15 02:25:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:45,061 INFO L93 Difference]: Finished difference Result 242 states and 258 transitions. [2022-02-15 02:25:45,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 02:25:45,061 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 [2022-02-15 02:25:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:45,062 INFO L225 Difference]: With dead ends: 242 [2022-02-15 02:25:45,062 INFO L226 Difference]: Without dead ends: 229 [2022-02-15 02:25:45,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 65 SyntacticMatches, 50 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10209 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1275, Invalid=35015, Unknown=0, NotChecked=0, Total=36290 [2022-02-15 02:25:45,063 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 297 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16360 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:45,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 253 Invalid, 16621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 16360 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 02:25:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-15 02:25:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2022-02-15 02:25:45,274 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) [2022-02-15 02:25:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2022-02-15 02:25:45,274 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 209 [2022-02-15 02:25:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:45,275 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 216 transitions. [2022-02-15 02:25:45,275 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) [2022-02-15 02:25:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 216 transitions. [2022-02-15 02:25:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-02-15 02:25:45,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:45,276 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] [2022-02-15 02:25:45,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-15 02:25:45,276 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -604956645, now seen corresponding path program 88 times [2022-02-15 02:25:45,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:45,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967259702] [2022-02-15 02:25:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:45,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,856 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,917 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,948 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,992 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,056 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,137 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:49,943 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:49,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967259702] [2022-02-15 02:25:49,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [967259702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:49,943 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:49,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-15 02:25:49,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119620550] [2022-02-15 02:25:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:49,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-15 02:25:49,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:49,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-15 02:25:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=9075, Unknown=0, NotChecked=0, Total=9506 [2022-02-15 02:25:49,944 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) [2022-02-15 02:25:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:56,269 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2022-02-15 02:25:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 02:25:56,269 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 [2022-02-15 02:25:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:56,270 INFO L225 Difference]: With dead ends: 244 [2022-02-15 02:25:56,271 INFO L226 Difference]: Without dead ends: 231 [2022-02-15 02:25:56,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 76 SyntacticMatches, 40 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10098 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1287, Invalid=35769, Unknown=0, NotChecked=0, Total=37056 [2022-02-15 02:25:56,272 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 340 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 15535 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:56,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 203 Invalid, 15842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 15535 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 02:25:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-02-15 02:25:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2022-02-15 02:25:56,621 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) [2022-02-15 02:25:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 218 transitions. [2022-02-15 02:25:56,621 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 218 transitions. Word has length 211 [2022-02-15 02:25:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:56,621 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 218 transitions. [2022-02-15 02:25:56,622 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) [2022-02-15 02:25:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 218 transitions. [2022-02-15 02:25:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-02-15 02:25:56,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:56,623 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] [2022-02-15 02:25:56,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-15 02:25:56,623 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -608882759, now seen corresponding path program 89 times [2022-02-15 02:25:56,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:56,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561432506] [2022-02-15 02:25:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:57,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,330 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,424 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,499 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,559 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:57,560 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:02,135 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:02,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561432506] [2022-02-15 02:26:02,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [561432506] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:02,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:02,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-15 02:26:02,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721688833] [2022-02-15 02:26:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:02,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-15 02:26:02,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-15 02:26:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=9267, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:26:02,137 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) [2022-02-15 02:26:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:09,029 INFO L93 Difference]: Finished difference Result 246 states and 262 transitions. [2022-02-15 02:26:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 02:26:09,029 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 [2022-02-15 02:26:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:09,030 INFO L225 Difference]: With dead ends: 246 [2022-02-15 02:26:09,030 INFO L226 Difference]: Without dead ends: 233 [2022-02-15 02:26:09,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 69 SyntacticMatches, 48 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10521 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1299, Invalid=36531, Unknown=0, NotChecked=0, Total=37830 [2022-02-15 02:26:09,032 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 312 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 15662 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:09,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 308 Invalid, 15937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 15662 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 02:26:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-02-15 02:26:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 216. [2022-02-15 02:26:09,314 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) [2022-02-15 02:26:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2022-02-15 02:26:09,314 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 213 [2022-02-15 02:26:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2022-02-15 02:26:09,315 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) [2022-02-15 02:26:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2022-02-15 02:26:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-15 02:26:09,315 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:09,315 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] [2022-02-15 02:26:09,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-15 02:26:09,315 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash -86911017, now seen corresponding path program 90 times [2022-02-15 02:26:09,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:09,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257380803] [2022-02-15 02:26:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:09,890 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:09,918 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:09,949 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:09,979 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,107 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,133 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,163 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:10,223 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:14,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:14,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257380803] [2022-02-15 02:26:14,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257380803] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:14,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:14,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-15 02:26:14,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695893751] [2022-02-15 02:26:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:14,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-15 02:26:14,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-15 02:26:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=9461, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 02:26:14,634 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) [2022-02-15 02:26:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:22,657 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2022-02-15 02:26:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 02:26:22,657 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 [2022-02-15 02:26:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:22,658 INFO L225 Difference]: With dead ends: 248 [2022-02-15 02:26:22,658 INFO L226 Difference]: Without dead ends: 235 [2022-02-15 02:26:22,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 72 SyntacticMatches, 46 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10690 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1311, Invalid=37301, Unknown=0, NotChecked=0, Total=38612 [2022-02-15 02:26:22,660 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 389 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 19105 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:22,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 348 Invalid, 19465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 19105 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:26:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-02-15 02:26:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-02-15 02:26:22,909 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) [2022-02-15 02:26:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 222 transitions. [2022-02-15 02:26:22,909 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 222 transitions. Word has length 215 [2022-02-15 02:26:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:22,910 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 222 transitions. [2022-02-15 02:26:22,910 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) [2022-02-15 02:26:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 222 transitions. [2022-02-15 02:26:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-02-15 02:26:22,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:22,910 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] [2022-02-15 02:26:22,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-15 02:26:22,911 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -983240587, now seen corresponding path program 91 times [2022-02-15 02:26:22,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:22,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619202869] [2022-02-15 02:26:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:23,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,690 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,780 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,817 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,865 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,994 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,050 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:24,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:28,678 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:28,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619202869] [2022-02-15 02:26:28,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1619202869] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:28,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:28,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-15 02:26:28,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418687782] [2022-02-15 02:26:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:28,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 02:26:28,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 02:26:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=9657, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:26:28,681 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) [2022-02-15 02:26:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:36,541 INFO L93 Difference]: Finished difference Result 252 states and 269 transitions. [2022-02-15 02:26:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 02:26:36,541 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 [2022-02-15 02:26:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:36,542 INFO L225 Difference]: With dead ends: 252 [2022-02-15 02:26:36,542 INFO L226 Difference]: Without dead ends: 239 [2022-02-15 02:26:36,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 67 SyntacticMatches, 52 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11078 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1323, Invalid=38079, Unknown=0, NotChecked=0, Total=39402 [2022-02-15 02:26:36,544 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 17593 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:36,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 138 Invalid, 17854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 17593 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 02:26:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-02-15 02:26:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2022-02-15 02:26:36,801 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) [2022-02-15 02:26:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2022-02-15 02:26:36,802 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 217 [2022-02-15 02:26:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:36,802 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2022-02-15 02:26:36,802 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) [2022-02-15 02:26:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2022-02-15 02:26:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-02-15 02:26:36,803 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:36,803 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] [2022-02-15 02:26:36,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-15 02:26:36,803 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash 932469139, now seen corresponding path program 92 times [2022-02-15 02:26:36,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:36,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86053343] [2022-02-15 02:26:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:37,367 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,390 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,420 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,448 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,471 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,501 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,535 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,564 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,598 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,647 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:37,647 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:37,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:41,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:41,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86053343] [2022-02-15 02:26:41,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [86053343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:41,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:41,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-15 02:26:41,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21646906] [2022-02-15 02:26:41,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:41,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 02:26:41,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 02:26:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=9855, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 02:26:41,433 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) [2022-02-15 02:26:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:48,724 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2022-02-15 02:26:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 02:26:48,724 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 [2022-02-15 02:26:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:48,725 INFO L225 Difference]: With dead ends: 253 [2022-02-15 02:26:48,725 INFO L226 Difference]: Without dead ends: 240 [2022-02-15 02:26:48,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 68 SyntacticMatches, 52 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11205 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1335, Invalid=38865, Unknown=0, NotChecked=0, Total=40200 [2022-02-15 02:26:48,727 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 404 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 18571 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:48,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 128 Invalid, 18946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 18571 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-02-15 02:26:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-15 02:26:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2022-02-15 02:26:48,987 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) [2022-02-15 02:26:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 228 transitions. [2022-02-15 02:26:48,987 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 228 transitions. Word has length 219 [2022-02-15 02:26:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:48,988 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 228 transitions. [2022-02-15 02:26:48,988 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) [2022-02-15 02:26:48,988 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 228 transitions. [2022-02-15 02:26:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-02-15 02:26:48,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:48,989 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] [2022-02-15 02:26:48,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-15 02:26:48,989 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1748369914, now seen corresponding path program 93 times [2022-02-15 02:26:48,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:48,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487422627] [2022-02-15 02:26:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:49,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,567 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,603 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,635 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,741 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,844 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:53,783 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:53,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487422627] [2022-02-15 02:26:53,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1487422627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:53,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:53,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-15 02:26:53,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451028232] [2022-02-15 02:26:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:53,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 02:26:53,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 02:26:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=10055, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:26:53,785 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) [2022-02-15 02:27:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:00,511 INFO L93 Difference]: Finished difference Result 255 states and 271 transitions. [2022-02-15 02:27:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 02:27:00,511 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 [2022-02-15 02:27:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:00,512 INFO L225 Difference]: With dead ends: 255 [2022-02-15 02:27:00,512 INFO L226 Difference]: Without dead ends: 242 [2022-02-15 02:27:00,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 65 SyntacticMatches, 57 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11345 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1347, Invalid=39659, Unknown=0, NotChecked=0, Total=41006 [2022-02-15 02:27:00,514 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 294 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 16047 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:00,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 73 Invalid, 16310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 16047 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-15 02:27:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-02-15 02:27:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 225. [2022-02-15 02:27:00,831 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) [2022-02-15 02:27:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2022-02-15 02:27:00,831 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 222 [2022-02-15 02:27:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:00,832 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2022-02-15 02:27:00,832 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) [2022-02-15 02:27:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2022-02-15 02:27:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-02-15 02:27:00,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:00,833 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] [2022-02-15 02:27:00,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-15 02:27:00,833 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1785142744, now seen corresponding path program 94 times [2022-02-15 02:27:00,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:00,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051482043] [2022-02-15 02:27:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:01,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,555 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,602 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,646 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,689 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,890 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:01,971 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:07,424 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:07,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051482043] [2022-02-15 02:27:07,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2051482043] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:07,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:07,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-15 02:27:07,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708947673] [2022-02-15 02:27:07,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:07,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 02:27:07,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 02:27:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=10257, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 02:27:07,429 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) [2022-02-15 02:27:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:13,930 INFO L93 Difference]: Finished difference Result 257 states and 273 transitions. [2022-02-15 02:27:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 02:27:13,930 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 [2022-02-15 02:27:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:13,931 INFO L225 Difference]: With dead ends: 257 [2022-02-15 02:27:13,931 INFO L226 Difference]: Without dead ends: 244 [2022-02-15 02:27:13,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 69 SyntacticMatches, 54 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11562 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1359, Invalid=40461, Unknown=0, NotChecked=0, Total=41820 [2022-02-15 02:27:13,933 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 267 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15761 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:13,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 43 Invalid, 15991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 15761 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 02:27:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-02-15 02:27:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2022-02-15 02:27:14,238 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) [2022-02-15 02:27:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-02-15 02:27:14,238 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 224 [2022-02-15 02:27:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-02-15 02:27:14,238 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) [2022-02-15 02:27:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-02-15 02:27:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-02-15 02:27:14,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:14,240 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] [2022-02-15 02:27:14,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-15 02:27:14,240 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1530873290, now seen corresponding path program 95 times [2022-02-15 02:27:14,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:14,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267899661] [2022-02-15 02:27:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:14,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:14,963 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:14,997 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,055 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,097 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,152 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,197 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,246 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:15,246 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:20,253 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:20,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267899661] [2022-02-15 02:27:20,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1267899661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:20,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:20,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-15 02:27:20,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249512515] [2022-02-15 02:27:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-15 02:27:20,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-15 02:27:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=10461, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:27:20,255 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) [2022-02-15 02:27:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:27,165 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2022-02-15 02:27:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-15 02:27:27,165 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 [2022-02-15 02:27:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:27,166 INFO L225 Difference]: With dead ends: 259 [2022-02-15 02:27:27,166 INFO L226 Difference]: Without dead ends: 246 [2022-02-15 02:27:27,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 61 SyntacticMatches, 63 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12146 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1371, Invalid=41271, Unknown=0, NotChecked=0, Total=42642 [2022-02-15 02:27:27,168 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 261 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 15773 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:27,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 68 Invalid, 15999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 15773 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-15 02:27:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-02-15 02:27:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 229. [2022-02-15 02:27:27,427 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) [2022-02-15 02:27:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2022-02-15 02:27:27,427 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 226 [2022-02-15 02:27:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:27,427 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2022-02-15 02:27:27,427 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) [2022-02-15 02:27:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2022-02-15 02:27:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-15 02:27:27,428 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:27,428 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] [2022-02-15 02:27:27,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-15 02:27:27,428 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1356548332, now seen corresponding path program 96 times [2022-02-15 02:27:27,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:27,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8675081] [2022-02-15 02:27:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:27,948 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:27,985 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,042 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,130 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,230 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,329 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,400 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:28,401 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:28,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:33,117 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:33,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8675081] [2022-02-15 02:27:33,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [8675081] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:33,118 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:33,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-15 02:27:33,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969420834] [2022-02-15 02:27:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:33,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-15 02:27:33,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-15 02:27:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=10667, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 02:27:33,120 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) [2022-02-15 02:27:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:41,723 INFO L93 Difference]: Finished difference Result 261 states and 277 transitions. [2022-02-15 02:27:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-15 02:27:41,724 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 [2022-02-15 02:27:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:41,724 INFO L225 Difference]: With dead ends: 261 [2022-02-15 02:27:41,725 INFO L226 Difference]: Without dead ends: 248 [2022-02-15 02:27:41,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 68 SyntacticMatches, 57 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12108 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1383, Invalid=42089, Unknown=0, NotChecked=0, Total=43472 [2022-02-15 02:27:41,726 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 308 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 16943 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:41,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 93 Invalid, 17218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 16943 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 02:27:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-15 02:27:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 231. [2022-02-15 02:27:42,037 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) [2022-02-15 02:27:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-02-15 02:27:42,038 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 228 [2022-02-15 02:27:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:42,038 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-02-15 02:27:42,038 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) [2022-02-15 02:27:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-02-15 02:27:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-02-15 02:27:42,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:42,039 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] [2022-02-15 02:27:42,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-15 02:27:42,039 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1333988238, now seen corresponding path program 97 times [2022-02-15 02:27:42,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:42,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376219220] [2022-02-15 02:27:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:42,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:42,879 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:42,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:42,948 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:42,975 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,010 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,053 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,133 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:43,235 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:48,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:48,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376219220] [2022-02-15 02:27:48,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376219220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:48,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:48,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-15 02:27:48,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103519056] [2022-02-15 02:27:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:48,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-15 02:27:48,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-15 02:27:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=10875, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:27:48,054 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) [2022-02-15 02:27:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:55,727 INFO L93 Difference]: Finished difference Result 263 states and 279 transitions. [2022-02-15 02:27:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-15 02:27:55,728 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 [2022-02-15 02:27:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:55,729 INFO L225 Difference]: With dead ends: 263 [2022-02-15 02:27:55,729 INFO L226 Difference]: Without dead ends: 250 [2022-02-15 02:27:55,731 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 [2022-02-15 02:27:55,731 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 382 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 18748 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 4.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:55,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 103 Invalid, 19097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 18748 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-02-15 02:27:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-15 02:27:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2022-02-15 02:27:56,135 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) [2022-02-15 02:27:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2022-02-15 02:27:56,136 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 230 [2022-02-15 02:27:56,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:56,136 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2022-02-15 02:27:56,136 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) [2022-02-15 02:27:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2022-02-15 02:27:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-02-15 02:27:56,137 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:56,137 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] [2022-02-15 02:27:56,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-15 02:27:56,137 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1128574384, now seen corresponding path program 98 times [2022-02-15 02:27:56,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:56,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481061417] [2022-02-15 02:27:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:56,629 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,696 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,761 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,800 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,859 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,896 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,963 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:56,964 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:02,265 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:02,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481061417] [2022-02-15 02:28:02,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1481061417] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:02,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:02,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-15 02:28:02,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525534393] [2022-02-15 02:28:02,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:02,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-15 02:28:02,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-15 02:28:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=11085, Unknown=0, NotChecked=0, Total=11556 [2022-02-15 02:28:02,267 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) [2022-02-15 02:28:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:10,471 INFO L93 Difference]: Finished difference Result 267 states and 284 transitions. [2022-02-15 02:28:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-15 02:28:10,472 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 [2022-02-15 02:28:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:10,473 INFO L225 Difference]: With dead ends: 267 [2022-02-15 02:28:10,473 INFO L226 Difference]: Without dead ends: 254 [2022-02-15 02:28:10,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 86 SyntacticMatches, 41 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12250 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1407, Invalid=43749, Unknown=0, NotChecked=0, Total=45156 [2022-02-15 02:28:10,475 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 315 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 19847 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:10,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 63 Invalid, 20130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 19847 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 02:28:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-15 02:28:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 237. [2022-02-15 02:28:10,799 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) [2022-02-15 02:28:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2022-02-15 02:28:10,800 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 232 [2022-02-15 02:28:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:10,800 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2022-02-15 02:28:10,800 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) [2022-02-15 02:28:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2022-02-15 02:28:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-02-15 02:28:10,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:10,801 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] [2022-02-15 02:28:10,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-15 02:28:10,802 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1294356306, now seen corresponding path program 99 times [2022-02-15 02:28:10,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:10,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290629869] [2022-02-15 02:28:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:11,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,666 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,743 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,801 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,838 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:11,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:12,009 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:12,009 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:16,167 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:16,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290629869] [2022-02-15 02:28:16,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [290629869] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:16,168 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:16,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-02-15 02:28:16,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525524702] [2022-02-15 02:28:16,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:16,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-15 02:28:16,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-15 02:28:16,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=11297, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:28:16,169 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) [2022-02-15 02:28:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:24,881 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2022-02-15 02:28:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 02:28:24,881 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 [2022-02-15 02:28:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:24,882 INFO L225 Difference]: With dead ends: 268 [2022-02-15 02:28:24,882 INFO L226 Difference]: Without dead ends: 255 [2022-02-15 02:28:24,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 75 SyntacticMatches, 53 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12609 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1419, Invalid=44591, Unknown=0, NotChecked=0, Total=46010 [2022-02-15 02:28:24,885 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 380 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19827 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:24,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 33 Invalid, 20179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 19827 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:28:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-02-15 02:28:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 239. [2022-02-15 02:28:25,295 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) [2022-02-15 02:28:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2022-02-15 02:28:25,295 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 234 [2022-02-15 02:28:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:25,296 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2022-02-15 02:28:25,296 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) [2022-02-15 02:28:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2022-02-15 02:28:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-02-15 02:28:25,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:25,297 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] [2022-02-15 02:28:25,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-15 02:28:25,297 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1838575361, now seen corresponding path program 100 times [2022-02-15 02:28:25,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:25,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195847827] [2022-02-15 02:28:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:25,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:25,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:25,904 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:25,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:25,962 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:25,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:26,027 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:26,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:26,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:26,144 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:26,144 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:26,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:30,927 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:30,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195847827] [2022-02-15 02:28:30,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [195847827] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:30,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:30,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-02-15 02:28:30,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628699398] [2022-02-15 02:28:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:30,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-15 02:28:30,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-15 02:28:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=11511, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 02:28:30,929 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) [2022-02-15 02:28:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:39,149 INFO L93 Difference]: Finished difference Result 270 states and 286 transitions. [2022-02-15 02:28:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-15 02:28:39,150 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 [2022-02-15 02:28:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:39,151 INFO L225 Difference]: With dead ends: 270 [2022-02-15 02:28:39,151 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 02:28:39,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 82 SyntacticMatches, 48 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12677 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1431, Invalid=45441, Unknown=0, NotChecked=0, Total=46872 [2022-02-15 02:28:39,154 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 308 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19661 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:39,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 193 Invalid, 19940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 19661 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-15 02:28:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 02:28:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 240. [2022-02-15 02:28:39,519 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) [2022-02-15 02:28:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 244 transitions. [2022-02-15 02:28:39,519 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 244 transitions. Word has length 237 [2022-02-15 02:28:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:39,520 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 244 transitions. [2022-02-15 02:28:39,520 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) [2022-02-15 02:28:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 244 transitions. [2022-02-15 02:28:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-02-15 02:28:39,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:39,523 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] [2022-02-15 02:28:39,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-15 02:28:39,523 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:39,523 INFO L85 PathProgramCache]: Analyzing trace with hash -705495139, now seen corresponding path program 101 times [2022-02-15 02:28:39,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:39,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106647781] [2022-02-15 02:28:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:40,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,116 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,289 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,392 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:40,392 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:44,731 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:44,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106647781] [2022-02-15 02:28:44,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106647781] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:44,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:44,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-02-15 02:28:44,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475461457] [2022-02-15 02:28:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:44,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-15 02:28:44,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-15 02:28:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=11727, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:28:44,735 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) [2022-02-15 02:28:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:53,124 INFO L93 Difference]: Finished difference Result 272 states and 288 transitions. [2022-02-15 02:28:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-15 02:28:53,124 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 [2022-02-15 02:28:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:53,125 INFO L225 Difference]: With dead ends: 272 [2022-02-15 02:28:53,125 INFO L226 Difference]: Without dead ends: 259 [2022-02-15 02:28:53,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 79 SyntacticMatches, 52 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12892 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1443, Invalid=46299, Unknown=0, NotChecked=0, Total=47742 [2022-02-15 02:28:53,128 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 394 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 20513 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:53,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 198 Invalid, 20877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 20513 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 02:28:53,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-15 02:28:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2022-02-15 02:28:53,490 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) [2022-02-15 02:28:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2022-02-15 02:28:53,490 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 239 [2022-02-15 02:28:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:53,490 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2022-02-15 02:28:53,491 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) [2022-02-15 02:28:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2022-02-15 02:28:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-02-15 02:28:53,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:53,491 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] [2022-02-15 02:28:53,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-15 02:28:53,491 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1557872315, now seen corresponding path program 102 times [2022-02-15 02:28:53,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:53,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629504718] [2022-02-15 02:28:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:53,989 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,045 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,074 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,098 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,172 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,217 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,253 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:54,319 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:59,701 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:59,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629504718] [2022-02-15 02:28:59,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629504718] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:59,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:59,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-02-15 02:28:59,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426075799] [2022-02-15 02:28:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:59,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-15 02:28:59,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-15 02:28:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=11945, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 02:28:59,704 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) [2022-02-15 02:29:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:09,274 INFO L93 Difference]: Finished difference Result 274 states and 290 transitions. [2022-02-15 02:29:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-15 02:29:09,274 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 [2022-02-15 02:29:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:09,287 INFO L225 Difference]: With dead ends: 274 [2022-02-15 02:29:09,288 INFO L226 Difference]: Without dead ends: 261 [2022-02-15 02:29:09,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 71 SyntacticMatches, 61 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13469 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1455, Invalid=47165, Unknown=0, NotChecked=0, Total=48620 [2022-02-15 02:29:09,291 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 283 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 18559 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:09,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 108 Invalid, 18807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 18559 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 02:29:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-02-15 02:29:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 244. [2022-02-15 02:29:09,664 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) [2022-02-15 02:29:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2022-02-15 02:29:09,664 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 241 [2022-02-15 02:29:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:09,664 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2022-02-15 02:29:09,664 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) [2022-02-15 02:29:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2022-02-15 02:29:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-02-15 02:29:09,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:09,666 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] [2022-02-15 02:29:09,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-15 02:29:09,667 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:09,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash -894423463, now seen corresponding path program 103 times [2022-02-15 02:29:09,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:09,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800206102] [2022-02-15 02:29:09,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:10,441 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,655 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,854 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:10,855 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:16,152 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:16,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800206102] [2022-02-15 02:29:16,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800206102] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:16,154 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:16,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-02-15 02:29:16,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116561161] [2022-02-15 02:29:16,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:16,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-15 02:29:16,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-15 02:29:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=12165, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:29:16,156 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) [2022-02-15 02:29:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:24,948 INFO L93 Difference]: Finished difference Result 276 states and 292 transitions. [2022-02-15 02:29:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 02:29:24,949 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 [2022-02-15 02:29:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:24,950 INFO L225 Difference]: With dead ends: 276 [2022-02-15 02:29:24,950 INFO L226 Difference]: Without dead ends: 263 [2022-02-15 02:29:24,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 74 SyntacticMatches, 59 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13584 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1467, Invalid=48039, Unknown=0, NotChecked=0, Total=49506 [2022-02-15 02:29:24,952 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 385 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 20231 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:24,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 113 Invalid, 20589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 20231 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:29:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-02-15 02:29:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 246. [2022-02-15 02:29:25,293 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) [2022-02-15 02:29:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 250 transitions. [2022-02-15 02:29:25,293 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 250 transitions. Word has length 243 [2022-02-15 02:29:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:25,293 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 250 transitions. [2022-02-15 02:29:25,293 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) [2022-02-15 02:29:25,293 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 250 transitions. [2022-02-15 02:29:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-02-15 02:29:25,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:25,294 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] [2022-02-15 02:29:25,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-15 02:29:25,294 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:25,294 INFO L85 PathProgramCache]: Analyzing trace with hash 386379383, now seen corresponding path program 104 times [2022-02-15 02:29:25,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:25,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75656731] [2022-02-15 02:29:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:25,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,888 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,949 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:25,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:26,000 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:26,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:26,082 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:26,082 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:26,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:31,099 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:31,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75656731] [2022-02-15 02:29:31,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [75656731] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:31,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:31,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-02-15 02:29:31,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153536961] [2022-02-15 02:29:31,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-02-15 02:29:31,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-02-15 02:29:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=12387, Unknown=0, NotChecked=0, Total=12882 [2022-02-15 02:29:31,102 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) [2022-02-15 02:29:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:42,060 INFO L93 Difference]: Finished difference Result 278 states and 294 transitions. [2022-02-15 02:29:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 02:29:42,061 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 [2022-02-15 02:29:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:42,061 INFO L225 Difference]: With dead ends: 278 [2022-02-15 02:29:42,061 INFO L226 Difference]: Without dead ends: 265 [2022-02-15 02:29:42,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 69 SyntacticMatches, 65 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13941 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1479, Invalid=48921, Unknown=0, NotChecked=0, Total=50400 [2022-02-15 02:29:42,065 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 315 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 23534 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s 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, 6.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:42,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 258 Invalid, 23821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 23534 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-15 02:29:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-02-15 02:29:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 248. [2022-02-15 02:29:42,449 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) [2022-02-15 02:29:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 252 transitions. [2022-02-15 02:29:42,450 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 252 transitions. Word has length 245 [2022-02-15 02:29:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:42,450 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 252 transitions. [2022-02-15 02:29:42,450 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) [2022-02-15 02:29:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 252 transitions. [2022-02-15 02:29:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-02-15 02:29:42,451 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:42,451 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] [2022-02-15 02:29:42,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-15 02:29:42,452 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1417699563, now seen corresponding path program 105 times [2022-02-15 02:29:42,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:42,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874698182] [2022-02-15 02:29:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:42,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,046 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,073 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,222 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,265 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,339 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:43,340 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:49,214 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:49,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874698182] [2022-02-15 02:29:49,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1874698182] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:49,214 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:49,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-02-15 02:29:49,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025599356] [2022-02-15 02:29:49,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:49,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-02-15 02:29:49,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-02-15 02:29:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=12611, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:29:49,216 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) [2022-02-15 02:29:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:58,570 INFO L93 Difference]: Finished difference Result 282 states and 299 transitions. [2022-02-15 02:29:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-15 02:29:58,592 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 [2022-02-15 02:29:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:58,593 INFO L225 Difference]: With dead ends: 282 [2022-02-15 02:29:58,593 INFO L226 Difference]: Without dead ends: 269 [2022-02-15 02:29:58,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 81 SyntacticMatches, 54 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13914 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1491, Invalid=49811, Unknown=0, NotChecked=0, Total=51302 [2022-02-15 02:29:58,606 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 283 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 20607 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:58,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 163 Invalid, 20858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 20607 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 02:29:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-02-15 02:29:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2022-02-15 02:29:58,945 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) [2022-02-15 02:29:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 256 transitions. [2022-02-15 02:29:58,945 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 256 transitions. Word has length 247 [2022-02-15 02:29:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:58,945 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 256 transitions. [2022-02-15 02:29:58,945 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) [2022-02-15 02:29:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 256 transitions. [2022-02-15 02:29:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-02-15 02:29:58,946 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:58,946 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] [2022-02-15 02:29:58,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-15 02:29:58,946 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 29220915, now seen corresponding path program 106 times [2022-02-15 02:29:58,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:58,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226538624] [2022-02-15 02:29:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:59,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,567 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,602 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,663 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,798 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,850 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:59,850 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:30:05,103 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:30:05,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226538624] [2022-02-15 02:30:05,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [226538624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:30:05,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:30:05,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-02-15 02:30:05,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630230454] [2022-02-15 02:30:05,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:30:05,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-15 02:30:05,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:30:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-15 02:30:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=12837, Unknown=0, NotChecked=0, Total=13340 [2022-02-15 02:30:05,106 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) [2022-02-15 02:30:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:30:13,899 INFO L93 Difference]: Finished difference Result 283 states and 299 transitions. [2022-02-15 02:30:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 02:30:13,899 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 [2022-02-15 02:30:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:30:13,900 INFO L225 Difference]: With dead ends: 283 [2022-02-15 02:30:13,900 INFO L226 Difference]: Without dead ends: 270 [2022-02-15 02:30:13,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 67 SyntacticMatches, 69 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14419 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1503, Invalid=50709, Unknown=0, NotChecked=0, Total=52212 [2022-02-15 02:30:13,903 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 335 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21596 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:30:13,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 53 Invalid, 21901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 21596 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:30:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-02-15 02:30:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 254. [2022-02-15 02:30:14,236 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) [2022-02-15 02:30:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 258 transitions. [2022-02-15 02:30:14,244 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 258 transitions. Word has length 249 [2022-02-15 02:30:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:30:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 258 transitions. [2022-02-15 02:30:14,244 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) [2022-02-15 02:30:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 258 transitions. [2022-02-15 02:30:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-02-15 02:30:14,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:30:14,245 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] [2022-02-15 02:30:14,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-15 02:30:14,245 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:30:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:30:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1050638170, now seen corresponding path program 107 times [2022-02-15 02:30:14,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:30:14,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815084796] [2022-02-15 02:30:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:30:14,968 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:14,997 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,084 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,146 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,210 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:15,263 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:30:15,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:30:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:30:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:30:20,308 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:30:20,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815084796] [2022-02-15 02:30:20,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1815084796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:30:20,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:30:20,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-02-15 02:30:20,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983006323] [2022-02-15 02:30:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:30:20,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-15 02:30:20,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:30:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-15 02:30:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=13065, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:30:20,310 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) [2022-02-15 02:30:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:30:29,465 INFO L93 Difference]: Finished difference Result 285 states and 301 transitions. [2022-02-15 02:30:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-15 02:30:29,465 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 [2022-02-15 02:30:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:30:29,466 INFO L225 Difference]: With dead ends: 285 [2022-02-15 02:30:29,466 INFO L226 Difference]: Without dead ends: 272 [2022-02-15 02:30:29,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 77 SyntacticMatches, 61 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14540 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1515, Invalid=51615, Unknown=0, NotChecked=0, Total=53130 [2022-02-15 02:30:29,469 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, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:30:29,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 428 Invalid, 25316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 24984 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 02:30:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-15 02:30:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-02-15 02:30:29,831 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) [2022-02-15 02:30:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2022-02-15 02:30:29,832 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 252 [2022-02-15 02:30:29,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:30:29,832 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2022-02-15 02:30:29,832 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) [2022-02-15 02:30:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2022-02-15 02:30:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-02-15 02:30:29,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:30:29,833 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] [2022-02-15 02:30:29,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-15 02:30:29,833 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:30:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:30:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1279834936, now seen corresponding path program 108 times [2022-02-15 02:30:29,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:30:29,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671140379] [2022-02-15 02:30:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:30:30,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,340 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,378 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,442 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,471 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,496 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,516 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,545 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:30,597 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:30:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:30:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:30:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:30:35,952 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:30:35,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671140379] [2022-02-15 02:30:35,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1671140379] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:30:35,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:30:35,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-02-15 02:30:35,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285269027] [2022-02-15 02:30:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:30:35,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-02-15 02:30:35,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:30:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-02-15 02:30:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=13295, Unknown=0, NotChecked=0, Total=13806 [2022-02-15 02:30:35,954 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) [2022-02-15 02:30:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:30:44,977 INFO L93 Difference]: Finished difference Result 287 states and 303 transitions. [2022-02-15 02:30:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-15 02:30:44,977 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 [2022-02-15 02:30:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:30:44,978 INFO L225 Difference]: With dead ends: 287 [2022-02-15 02:30:44,978 INFO L226 Difference]: Without dead ends: 274 [2022-02-15 02:30:44,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 78 SyntacticMatches, 61 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14623 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1527, Invalid=52529, Unknown=0, NotChecked=0, Total=54056 [2022-02-15 02:30:44,980 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, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:30:44,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 93 Invalid, 23895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 23519 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 02:30:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-02-15 02:30:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2022-02-15 02:30:45,330 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) [2022-02-15 02:30:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2022-02-15 02:30:45,331 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 254 [2022-02-15 02:30:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:30:45,331 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2022-02-15 02:30:45,331 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) [2022-02-15 02:30:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2022-02-15 02:30:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-02-15 02:30:45,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:30:45,332 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] [2022-02-15 02:30:45,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-15 02:30:45,332 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:30:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:30:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1800372330, now seen corresponding path program 109 times [2022-02-15 02:30:45,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:30:45,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448836428] [2022-02-15 02:30:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:30:45,882 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:45,908 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:45,943 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:45,973 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:45,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,056 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,111 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,144 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:30:46,201 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:30:46,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:30:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:30:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:30:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:30:51,988 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:30:51,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448836428] [2022-02-15 02:30:51,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [448836428] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:30:51,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:30:51,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-02-15 02:30:51,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885068526] [2022-02-15 02:30:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:30:51,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-02-15 02:30:51,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:30:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-02-15 02:30:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=13527, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:30:51,991 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) [2022-02-15 02:31:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:31:02,155 INFO L93 Difference]: Finished difference Result 289 states and 305 transitions. [2022-02-15 02:31:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-15 02:31:02,156 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 [2022-02-15 02:31:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:31:02,157 INFO L225 Difference]: With dead ends: 289 [2022-02-15 02:31:02,157 INFO L226 Difference]: Without dead ends: 276 [2022-02-15 02:31:02,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 84 SyntacticMatches, 56 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14568 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1539, Invalid=53451, Unknown=0, NotChecked=0, Total=54990 [2022-02-15 02:31:02,160 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 417 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 25443 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 5.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:31:02,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 328 Invalid, 25834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 25443 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-02-15 02:31:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-02-15 02:31:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2022-02-15 02:31:02,661 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) [2022-02-15 02:31:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2022-02-15 02:31:02,661 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 256 [2022-02-15 02:31:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:31:02,662 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions. [2022-02-15 02:31:02,662 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) [2022-02-15 02:31:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions. [2022-02-15 02:31:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-02-15 02:31:02,663 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:31:02,663 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] [2022-02-15 02:31:02,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-15 02:31:02,663 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:31:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:31:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1647879284, now seen corresponding path program 110 times [2022-02-15 02:31:02,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:31:02,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589637821] [2022-02-15 02:31:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:31:03,284 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,343 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,372 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,431 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,509 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,541 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:03,597 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:31:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:31:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:31:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:31:08,856 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:31:08,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589637821] [2022-02-15 02:31:08,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [589637821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:31:08,856 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:31:08,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-02-15 02:31:08,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745611141] [2022-02-15 02:31:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:31:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-02-15 02:31:08,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:31:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-02-15 02:31:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=13761, Unknown=0, NotChecked=0, Total=14280 [2022-02-15 02:31:08,858 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) [2022-02-15 02:31:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:31:17,887 INFO L93 Difference]: Finished difference Result 291 states and 307 transitions. [2022-02-15 02:31:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-15 02:31:17,887 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 [2022-02-15 02:31:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:31:17,888 INFO L225 Difference]: With dead ends: 291 [2022-02-15 02:31:17,888 INFO L226 Difference]: Without dead ends: 278 [2022-02-15 02:31:17,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 90 SyntacticMatches, 51 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14757 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1551, Invalid=54381, Unknown=0, NotChecked=0, Total=55932 [2022-02-15 02:31:17,892 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 299 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 21551 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:31:17,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 58 Invalid, 21817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 21551 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-02-15 02:31:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-15 02:31:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 261. [2022-02-15 02:31:18,331 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) [2022-02-15 02:31:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2022-02-15 02:31:18,331 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 258 [2022-02-15 02:31:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:31:18,332 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2022-02-15 02:31:18,332 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) [2022-02-15 02:31:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2022-02-15 02:31:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-02-15 02:31:18,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:31:18,333 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] [2022-02-15 02:31:18,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-15 02:31:18,333 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:31:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:31:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -297072174, now seen corresponding path program 111 times [2022-02-15 02:31:18,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:31:18,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879140330] [2022-02-15 02:31:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:31:18,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:18,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:18,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:18,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:18,954 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:18,986 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:19,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:19,039 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:19,069 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:19,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:19,124 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:31:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:31:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:31:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:31:25,674 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:31:25,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879140330] [2022-02-15 02:31:25,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [879140330] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:31:25,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:31:25,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-02-15 02:31:25,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387730453] [2022-02-15 02:31:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:31:25,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-02-15 02:31:25,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:31:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-02-15 02:31:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=13997, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:31:25,677 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) [2022-02-15 02:31:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:31:37,276 INFO L93 Difference]: Finished difference Result 293 states and 309 transitions. [2022-02-15 02:31:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-02-15 02:31:37,277 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 [2022-02-15 02:31:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:31:37,277 INFO L225 Difference]: With dead ends: 293 [2022-02-15 02:31:37,277 INFO L226 Difference]: Without dead ends: 280 [2022-02-15 02:31:37,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 85 SyntacticMatches, 57 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15026 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1563, Invalid=55319, Unknown=0, NotChecked=0, Total=56882 [2022-02-15 02:31:37,280 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 423 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 23118 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 6.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:31:37,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 68 Invalid, 23515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 23118 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-02-15 02:31:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-02-15 02:31:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2022-02-15 02:31:37,617 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) [2022-02-15 02:31:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-02-15 02:31:37,618 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 260 [2022-02-15 02:31:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:31:37,618 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-02-15 02:31:37,618 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) [2022-02-15 02:31:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-02-15 02:31:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-02-15 02:31:37,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:31:37,619 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] [2022-02-15 02:31:37,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-15 02:31:37,619 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:31:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:31:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1084649552, now seen corresponding path program 112 times [2022-02-15 02:31:37,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:31:37,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691904208] [2022-02-15 02:31:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:31:38,396 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,477 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,513 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,551 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,633 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,669 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,779 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:38,779 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:31:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:31:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:31:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:31:45,374 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:31:45,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691904208] [2022-02-15 02:31:45,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [691904208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:31:45,374 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:31:45,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-02-15 02:31:45,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685587518] [2022-02-15 02:31:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:31:45,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-02-15 02:31:45,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:31:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-02-15 02:31:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=14235, Unknown=0, NotChecked=0, Total=14762 [2022-02-15 02:31:45,376 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) [2022-02-15 02:31:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:31:55,688 INFO L93 Difference]: Finished difference Result 297 states and 314 transitions. [2022-02-15 02:31:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-15 02:31:55,688 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 [2022-02-15 02:31:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:31:55,689 INFO L225 Difference]: With dead ends: 297 [2022-02-15 02:31:55,689 INFO L226 Difference]: Without dead ends: 284 [2022-02-15 02:31:55,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 88 SyntacticMatches, 55 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15365 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1575, Invalid=56265, Unknown=0, NotChecked=0, Total=57840 [2022-02-15 02:31:55,691 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 375 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 24968 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 5.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:31:55,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 283 Invalid, 25318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 24968 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-02-15 02:31:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-15 02:31:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2022-02-15 02:31:56,028 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) [2022-02-15 02:31:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2022-02-15 02:31:56,029 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 262 [2022-02-15 02:31:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:31:56,029 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 271 transitions. [2022-02-15 02:31:56,029 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) [2022-02-15 02:31:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 271 transitions. [2022-02-15 02:31:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-02-15 02:31:56,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:31:56,030 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] [2022-02-15 02:31:56,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-15 02:31:56,030 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:31:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:31:56,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2032265714, now seen corresponding path program 113 times [2022-02-15 02:31:56,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:31:56,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616305646] [2022-02-15 02:31:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:31:56,641 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,666 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,719 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,744 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,777 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,828 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,920 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:31:56,920 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:31:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:31:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:31:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:31:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:32:05,140 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:32:05,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616305646] [2022-02-15 02:32:05,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [616305646] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:32:05,140 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:32:05,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-02-15 02:32:05,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539729341] [2022-02-15 02:32:05,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:32:05,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-02-15 02:32:05,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:32:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-02-15 02:32:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=14475, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 02:32:05,142 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) [2022-02-15 02:32:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:32:20,408 INFO L93 Difference]: Finished difference Result 298 states and 314 transitions. [2022-02-15 02:32:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-15 02:32:20,409 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 [2022-02-15 02:32:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:32:20,409 INFO L225 Difference]: With dead ends: 298 [2022-02-15 02:32:20,410 INFO L226 Difference]: Without dead ends: 285 [2022-02-15 02:32:20,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 83 SyntacticMatches, 61 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15923 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1587, Invalid=57219, Unknown=0, NotChecked=0, Total=58806 [2022-02-15 02:32:20,412 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 459 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28381 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 8.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:32:20,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 158 Invalid, 28822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 28381 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-02-15 02:32:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-02-15 02:32:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 269. [2022-02-15 02:32:20,796 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) [2022-02-15 02:32:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2022-02-15 02:32:20,796 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 264 [2022-02-15 02:32:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:32:20,797 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2022-02-15 02:32:20,797 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) [2022-02-15 02:32:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2022-02-15 02:32:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-02-15 02:32:20,798 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:32:20,798 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] [2022-02-15 02:32:20,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-15 02:32:20,798 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:32:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:32:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1039839135, now seen corresponding path program 114 times [2022-02-15 02:32:20,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:32:20,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568294863] [2022-02-15 02:32:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:32:21,531 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,561 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,598 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,658 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,738 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,767 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,882 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:21,882 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:32:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:32:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:32:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:32:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:32:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:32:28,606 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:32:28,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568294863] [2022-02-15 02:32:28,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [568294863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:32:28,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:32:28,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-02-15 02:32:28,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340872670] [2022-02-15 02:32:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:32:28,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-02-15 02:32:28,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:32:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-02-15 02:32:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=14717, Unknown=0, NotChecked=0, Total=15252 [2022-02-15 02:32:28,608 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) [2022-02-15 02:32:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:32:39,860 INFO L93 Difference]: Finished difference Result 300 states and 316 transitions. [2022-02-15 02:32:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-15 02:32:39,860 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 [2022-02-15 02:32:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:32:39,861 INFO L225 Difference]: With dead ends: 300 [2022-02-15 02:32:39,861 INFO L226 Difference]: Without dead ends: 287 [2022-02-15 02:32:39,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 78 SyntacticMatches, 68 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16172 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1599, Invalid=58181, Unknown=0, NotChecked=0, Total=59780 [2022-02-15 02:32:39,864 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 343 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 26848 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 6.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:32:39,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 248 Invalid, 27165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 26848 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-02-15 02:32:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-02-15 02:32:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 270. [2022-02-15 02:32:40,304 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) [2022-02-15 02:32:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions. [2022-02-15 02:32:40,304 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 267 [2022-02-15 02:32:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:32:40,305 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 274 transitions. [2022-02-15 02:32:40,305 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) [2022-02-15 02:32:40,305 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 274 transitions. [2022-02-15 02:32:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-02-15 02:32:40,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:32:40,306 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] [2022-02-15 02:32:40,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-15 02:32:40,306 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:32:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:32:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -508103107, now seen corresponding path program 115 times [2022-02-15 02:32:40,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:32:40,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993876050] [2022-02-15 02:32:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:32:40,783 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,804 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,856 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,878 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,958 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:40,988 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:41,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=4}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:32:41,064 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:32:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:32:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:32:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:32:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:32:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.