/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/loops-crafted-1/mono-crafted_11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:57:11,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:57:11,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:57:11,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:57:11,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:57:11,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:57:11,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:57:11,250 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 01:57:11,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:57:11,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:57:11,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:57:11,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:57:11,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:57:11,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:57:11,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:57:11,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:57:11,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:57:11,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:57:11,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:57:11,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:57:11,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:57:11,270 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:57:11,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:57:11,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:57:11,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:57:11,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:57:11,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:57:11,505 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:57:11,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_11.c [2022-02-15 01:57:11,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311f5b79e/dc816664b8924a9dbd932c7b288bf95a/FLAGfff88a59d [2022-02-15 01:57:11,909 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:57:11,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_11.c [2022-02-15 01:57:11,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311f5b79e/dc816664b8924a9dbd932c7b288bf95a/FLAGfff88a59d [2022-02-15 01:57:12,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311f5b79e/dc816664b8924a9dbd932c7b288bf95a [2022-02-15 01:57:12,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:57:12,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:57:12,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:57:12,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:57:12,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:57:12,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e045f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12, skipping insertion in model container [2022-02-15 01:57:12,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:57:12,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:57:12,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_11.c[319,332] [2022-02-15 01:57:12,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:57:12,502 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:57:12,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_11.c[319,332] [2022-02-15 01:57:12,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:57:12,519 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:57:12,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12 WrapperNode [2022-02-15 01:57:12,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:57:12,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:57:12,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:57:12,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:57:12,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:57:12,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:57:12,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:57:12,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:57:12,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (1/1) ... [2022-02-15 01:57:12,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:57:12,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:57:12,572 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 01:57:12,596 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 01:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:57:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:57:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:57:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:57:12,648 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:57:12,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:57:12,733 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:57:12,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:57:12,737 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 01:57:12,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:57:12 BoogieIcfgContainer [2022-02-15 01:57:12,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:57:12,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:57:12,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:57:12,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:57:12,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:57:12" (1/3) ... [2022-02-15 01:57:12,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc56820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:57:12, skipping insertion in model container [2022-02-15 01:57:12,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:57:12" (2/3) ... [2022-02-15 01:57:12,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc56820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:57:12, skipping insertion in model container [2022-02-15 01:57:12,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:57:12" (3/3) ... [2022-02-15 01:57:12,756 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_11.c [2022-02-15 01:57:12,759 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:57:12,759 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:57:12,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:57:12,840 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 01:57:12,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:57:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 01:57:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:57:12,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:12,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:12,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:12,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1325153485, now seen corresponding path program 1 times [2022-02-15 01:57:12,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:12,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417543042] [2022-02-15 01:57:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:12,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:12,918 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:57:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,019 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 01:57:13,021 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:13,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417543042] [2022-02-15 01:57:13,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417543042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:13,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:13,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 01:57:13,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257454313] [2022-02-15 01:57:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:13,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 01:57:13,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 01:57:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:57:13,053 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:13,091 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-02-15 01:57:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 01:57:13,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-15 01:57:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:13,099 INFO L225 Difference]: With dead ends: 32 [2022-02-15 01:57:13,099 INFO L226 Difference]: Without dead ends: 13 [2022-02-15 01:57:13,102 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 01:57:13,108 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:13,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:57:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-15 01:57:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-15 01:57:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-02-15 01:57:13,141 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-02-15 01:57:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:13,141 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-02-15 01:57:13,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-02-15 01:57:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:57:13,143 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:13,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:13,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:57:13,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1315918275, now seen corresponding path program 1 times [2022-02-15 01:57:13,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:13,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663638894] [2022-02-15 01:57:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:13,149 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:57:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:13,266 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:13,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663638894] [2022-02-15 01:57:13,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [663638894] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:13,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:13,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 01:57:13,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719728558] [2022-02-15 01:57:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:13,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 01:57:13,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 01:57:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 01:57:13,270 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:13,305 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-02-15 01:57:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 01:57:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-15 01:57:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:13,307 INFO L225 Difference]: With dead ends: 22 [2022-02-15 01:57:13,307 INFO L226 Difference]: Without dead ends: 15 [2022-02-15 01:57:13,310 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 01:57:13,312 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:13,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:57:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-15 01:57:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-15 01:57:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-02-15 01:57:13,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-02-15 01:57:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:13,321 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-02-15 01:57:13,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-02-15 01:57:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 01:57:13,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:13,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:13,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:57:13,323 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1372110560, now seen corresponding path program 1 times [2022-02-15 01:57:13,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:13,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773814961] [2022-02-15 01:57:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:13,485 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 01:57:13,485 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:13,549 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 01:57:13,600 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:13,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773814961] [2022-02-15 01:57:13,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1773814961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:13,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:13,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:57:13,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544798743] [2022-02-15 01:57:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:13,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:57:13,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:57:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:57:13,602 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:13,669 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-02-15 01:57:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:57:13,669 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), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-15 01:57:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:13,670 INFO L225 Difference]: With dead ends: 22 [2022-02-15 01:57:13,670 INFO L226 Difference]: Without dead ends: 17 [2022-02-15 01:57:13,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:57:13,671 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:13,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:57:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-15 01:57:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-15 01:57:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-02-15 01:57:13,675 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2022-02-15 01:57:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:13,675 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-02-15 01:57:13,675 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), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-02-15 01:57:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 01:57:13,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:13,676 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:13,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:57:13,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:13,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1059749499, now seen corresponding path program 1 times [2022-02-15 01:57:13,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:13,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879664742] [2022-02-15 01:57:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:13,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:13,765 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:13,825 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:14,293 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:14,293 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:14,304 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_4.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_4.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:14,306 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_4.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_4.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:14,351 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_4.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_4.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:14,351 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_4.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_4.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:14,452 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 01:57:16,706 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:16,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879664742] [2022-02-15 01:57:16,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [879664742] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:16,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:16,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:57:16,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919131143] [2022-02-15 01:57:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:16,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:57:16,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:57:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:57:16,708 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:16,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:16,892 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-02-15 01:57:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:57:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:16,893 INFO L225 Difference]: With dead ends: 31 [2022-02-15 01:57:16,893 INFO L226 Difference]: Without dead ends: 21 [2022-02-15 01:57:16,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:57:16,894 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:16,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:57:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-15 01:57:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-02-15 01:57:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-02-15 01:57:16,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-02-15 01:57:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:16,920 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-02-15 01:57:16,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-15 01:57:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 01:57:16,921 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:16,921 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:16,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 01:57:16,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:16,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1662437453, now seen corresponding path program 2 times [2022-02-15 01:57:16,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:16,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371642039] [2022-02-15 01:57:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:17,005 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:17,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:17,075 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:17,122 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 01:57:17,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:17,178 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:17,185 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_8.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_8.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:17,185 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_8.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_8.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:17,211 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_8.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_8.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:17,211 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_8.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_8.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:17,301 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 01:57:17,553 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:17,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371642039] [2022-02-15 01:57:17,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [371642039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:17,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:17,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:57:17,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984701118] [2022-02-15 01:57:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:17,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:57:17,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:57:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:57:17,555 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:17,758 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-02-15 01:57:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:57:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-15 01:57:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:17,759 INFO L225 Difference]: With dead ends: 30 [2022-02-15 01:57:17,759 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 01:57:17,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:57:17,760 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:17,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:57:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 01:57:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-15 01:57:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-02-15 01:57:17,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-02-15 01:57:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:17,765 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-02-15 01:57:17,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-02-15 01:57:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:57:17,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:17,766 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:17,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 01:57:17,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash 361874638, now seen corresponding path program 3 times [2022-02-15 01:57:17,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:17,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784880953] [2022-02-15 01:57:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:17,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:17,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:17,931 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:17,978 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:18,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:18,028 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:18,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:18,033 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_12.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_12.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:18,034 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_12.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_12.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:18,060 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_12.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_12.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:18,061 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_12.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_12.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:18,235 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 01:57:18,613 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:18,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784880953] [2022-02-15 01:57:18,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [784880953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:18,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:18,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:57:18,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166591956] [2022-02-15 01:57:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:18,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:57:18,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:57:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:57:18,615 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:19,029 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-02-15 01:57:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:57:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:19,030 INFO L225 Difference]: With dead ends: 32 [2022-02-15 01:57:19,030 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 01:57:19,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:57:19,031 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:19,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:57:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 01:57:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-15 01:57:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-02-15 01:57:19,036 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 21 [2022-02-15 01:57:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:19,036 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-02-15 01:57:19,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-02-15 01:57:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:57:19,037 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:19,037 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:19,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 01:57:19,037 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:19,037 INFO L85 PathProgramCache]: Analyzing trace with hash 105609001, now seen corresponding path program 4 times [2022-02-15 01:57:19,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:19,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442099821] [2022-02-15 01:57:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:19,157 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:19,252 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 01:57:19,252 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:19,308 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:19,536 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:19,536 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:19,542 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_16.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_16.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:19,542 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_16.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_16.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:19,581 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_16.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_16.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:19,581 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_16.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_16.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:19,763 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 01:57:20,282 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:20,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442099821] [2022-02-15 01:57:20,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [442099821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:20,283 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:20,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:57:20,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132840334] [2022-02-15 01:57:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:20,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:57:20,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:57:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:57:20,284 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:20,741 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-15 01:57:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:57:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:20,742 INFO L225 Difference]: With dead ends: 34 [2022-02-15 01:57:20,743 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 01:57:20,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:57:20,743 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:20,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 43 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:57:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 01:57:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-15 01:57:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-15 01:57:20,749 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-02-15 01:57:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:20,749 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-15 01:57:20,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-15 01:57:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 01:57:20,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:20,750 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:20,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 01:57:20,750 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1352532284, now seen corresponding path program 5 times [2022-02-15 01:57:20,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:20,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15838031] [2022-02-15 01:57:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:20,862 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:20,950 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:20,950 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:21,009 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:21,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:21,129 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:21,142 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_20.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_20.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:21,142 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_20.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_20.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:21,160 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_20.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_20.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:21,160 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_20.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_20.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:21,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:21,274 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 01:57:21,993 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:21,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15838031] [2022-02-15 01:57:21,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [15838031] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:21,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:21,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:57:21,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619539402] [2022-02-15 01:57:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:21,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:57:21,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:57:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:57:21,995 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:22,467 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-02-15 01:57:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 01:57:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:22,470 INFO L225 Difference]: With dead ends: 36 [2022-02-15 01:57:22,470 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 01:57:22,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:57:22,472 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:22,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 63 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:57:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 01:57:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-15 01:57:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-15 01:57:22,487 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-02-15 01:57:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:22,488 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-15 01:57:22,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-15 01:57:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:57:22,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:22,491 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:22,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 01:57:22,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1827998623, now seen corresponding path program 6 times [2022-02-15 01:57:22,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:22,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102349121] [2022-02-15 01:57:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:23,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:24,058 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 01:57:24,058 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:24,098 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:24,142 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:24,142 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:24,146 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_24.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_24.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:24,147 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_24.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_24.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:24,160 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_24.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_24.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 01:57:24,161 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_24.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_24.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 01:57:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:24,273 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 01:57:24,812 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:24,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102349121] [2022-02-15 01:57:24,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2102349121] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:24,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:24,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:57:24,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058248311] [2022-02-15 01:57:24,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:24,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:57:24,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:57:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:57:24,814 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:25,308 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-02-15 01:57:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:57:25,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:25,309 INFO L225 Difference]: With dead ends: 38 [2022-02-15 01:57:25,309 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 01:57:25,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:57:25,310 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:25,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 43 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:57:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 01:57:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-15 01:57:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-15 01:57:25,315 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 27 [2022-02-15 01:57:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-15 01:57:25,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-15 01:57:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:57:25,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:25,316 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:25,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 01:57:25,317 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash 301485498, now seen corresponding path program 7 times [2022-02-15 01:57:25,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:25,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899049660] [2022-02-15 01:57:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:27,435 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:27,499 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:27,502 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:27,556 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 01:57:27,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:27,607 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:27,611 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_28.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_28.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:27,612 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_28.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_28.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:27,628 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_28.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_28.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:27,629 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_28.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_28.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:28,548 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:28,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899049660] [2022-02-15 01:57:28,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [899049660] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:28,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:28,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:57:28,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116128627] [2022-02-15 01:57:28,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:28,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:57:28,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:57:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:57:28,550 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:29,211 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-02-15 01:57:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:57:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:29,212 INFO L225 Difference]: With dead ends: 40 [2022-02-15 01:57:29,212 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 01:57:29,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:57:29,213 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:29,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 38 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:57:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 01:57:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-15 01:57:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-02-15 01:57:29,227 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2022-02-15 01:57:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:29,228 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-02-15 01:57:29,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-02-15 01:57:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 01:57:29,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:29,229 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:29,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 01:57:29,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2093779691, now seen corresponding path program 8 times [2022-02-15 01:57:29,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:29,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120313756] [2022-02-15 01:57:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:29,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:29,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:29,369 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:29,405 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:29,490 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:29,490 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:29,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:29,494 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_32.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_32.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:29,494 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_32.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_32.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:29,508 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_32.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_32.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:29,508 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_32.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_32.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:30,578 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:30,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120313756] [2022-02-15 01:57:30,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1120313756] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:30,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:30,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:57:30,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847669519] [2022-02-15 01:57:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:30,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:57:30,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:57:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-15 01:57:30,580 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:31,367 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-02-15 01:57:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:57:31,368 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:31,368 INFO L225 Difference]: With dead ends: 42 [2022-02-15 01:57:31,368 INFO L226 Difference]: Without dead ends: 35 [2022-02-15 01:57:31,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:57:31,369 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:31,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:57:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-15 01:57:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-15 01:57:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-02-15 01:57:31,376 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 31 [2022-02-15 01:57:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:31,376 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-02-15 01:57:31,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-02-15 01:57:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 01:57:31,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:31,377 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:31,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 01:57:31,377 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:31,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1841155664, now seen corresponding path program 9 times [2022-02-15 01:57:31,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:31,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127809641] [2022-02-15 01:57:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:31,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:31,569 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 01:57:31,570 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:31,608 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:33,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:33,661 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:33,666 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_36.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_36.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:33,666 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_36.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_36.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:33,681 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_36.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_36.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:33,681 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_36.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_36.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:33,811 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 01:57:34,723 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:34,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127809641] [2022-02-15 01:57:34,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127809641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:34,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:34,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:57:34,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468135481] [2022-02-15 01:57:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:34,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:57:34,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:57:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:57:34,724 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:35,650 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-02-15 01:57:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 01:57:35,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:57:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:35,651 INFO L225 Difference]: With dead ends: 44 [2022-02-15 01:57:35,651 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 01:57:35,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:57:35,652 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:35,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 73 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:57:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 01:57:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-02-15 01:57:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-02-15 01:57:35,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 33 [2022-02-15 01:57:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:35,658 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-02-15 01:57:35,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-02-15 01:57:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:57:35,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:35,658 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:35,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 01:57:35,658 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:35,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 412365707, now seen corresponding path program 10 times [2022-02-15 01:57:35,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:35,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110847759] [2022-02-15 01:57:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:35,732 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:35,800 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:35,800 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:35,840 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 01:57:35,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:35,915 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:35,930 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_40.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_40.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:35,930 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_40.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_40.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:35,966 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_40.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_40.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:35,966 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_40.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_40.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:36,114 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 01:57:37,194 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:37,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110847759] [2022-02-15 01:57:37,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1110847759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:37,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:37,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 01:57:37,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554842488] [2022-02-15 01:57:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:37,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 01:57:37,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 01:57:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:57:37,211 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:38,200 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-02-15 01:57:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:57:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-15 01:57:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:38,201 INFO L225 Difference]: With dead ends: 46 [2022-02-15 01:57:38,201 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 01:57:38,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:57:38,202 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:38,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 83 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:57:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 01:57:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-15 01:57:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-02-15 01:57:38,207 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2022-02-15 01:57:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:38,208 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-02-15 01:57:38,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-02-15 01:57:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:57:38,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:38,208 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:38,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 01:57:38,208 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1382886054, now seen corresponding path program 11 times [2022-02-15 01:57:38,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:38,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525571997] [2022-02-15 01:57:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:38,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:38,426 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:38,426 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:38,471 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:38,566 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:38,566 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:38,570 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_44.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_44.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:38,570 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_44.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_44.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:38,600 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_44.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_44.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:38,600 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_44.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_44.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:38,743 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 01:57:40,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:40,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525571997] [2022-02-15 01:57:40,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [525571997] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:40,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:40,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:57:40,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759585430] [2022-02-15 01:57:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:40,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:57:40,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:57:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:57:40,060 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:41,258 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-02-15 01:57:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:57:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-02-15 01:57:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:41,259 INFO L225 Difference]: With dead ends: 48 [2022-02-15 01:57:41,259 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 01:57:41,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:57:41,260 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:41,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 48 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 01:57:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 01:57:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-02-15 01:57:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-02-15 01:57:41,265 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 37 [2022-02-15 01:57:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:41,265 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-02-15 01:57:41,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-02-15 01:57:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 01:57:41,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:41,266 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 01:57:41,266 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2045036289, now seen corresponding path program 12 times [2022-02-15 01:57:41,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:41,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647892838] [2022-02-15 01:57:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:41,342 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:41,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:41,429 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:41,467 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:41,518 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:41,519 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:41,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:41,522 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_48.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_48.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:41,522 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_48.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_48.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:41,533 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_48.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_48.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:41,533 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_48.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_48.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:41,639 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 01:57:43,237 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:43,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647892838] [2022-02-15 01:57:43,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [647892838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:43,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:43,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:57:43,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005587825] [2022-02-15 01:57:43,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:57:43,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:57:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:57:43,239 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:44,950 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-02-15 01:57:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:57:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-02-15 01:57:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:44,951 INFO L225 Difference]: With dead ends: 50 [2022-02-15 01:57:44,951 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 01:57:44,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:57:44,952 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:44,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 93 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 01:57:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 01:57:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-15 01:57:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-02-15 01:57:44,957 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 39 [2022-02-15 01:57:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-02-15 01:57:44,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-02-15 01:57:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 01:57:44,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:44,958 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:44,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 01:57:44,958 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1578714980, now seen corresponding path program 13 times [2022-02-15 01:57:44,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:44,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51503204] [2022-02-15 01:57:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:45,097 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:45,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:45,162 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:45,209 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:45,261 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:45,261 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:45,269 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_52.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_52.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:45,269 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_52.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_52.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:45,281 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_52.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_52.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:45,281 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_52.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_52.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:45,395 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 01:57:46,944 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:46,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51503204] [2022-02-15 01:57:46,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [51503204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:46,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:46,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 01:57:46,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986931123] [2022-02-15 01:57:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:46,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 01:57:46,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 01:57:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:57:46,946 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:48,319 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2022-02-15 01:57:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 01:57:48,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-02-15 01:57:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:48,320 INFO L225 Difference]: With dead ends: 52 [2022-02-15 01:57:48,320 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 01:57:48,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:57:48,321 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:48,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 78 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 01:57:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 01:57:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-15 01:57:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-02-15 01:57:48,327 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 41 [2022-02-15 01:57:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:48,327 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-02-15 01:57:48,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-02-15 01:57:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 01:57:48,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:48,328 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:48,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 01:57:48,329 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash -785207433, now seen corresponding path program 14 times [2022-02-15 01:57:48,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:48,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538125165] [2022-02-15 01:57:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:48,386 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:48,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:48,455 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:48,493 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:48,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:48,569 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:48,573 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_56.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_56.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:48,573 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_56.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_56.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:48,592 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_56.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_56.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:48,593 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_56.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_56.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:48,688 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 01:57:50,190 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:50,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538125165] [2022-02-15 01:57:50,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1538125165] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:50,190 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:50,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:57:50,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98987372] [2022-02-15 01:57:50,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:50,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:57:50,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:57:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:57:50,191 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:51,711 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-02-15 01:57:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:57:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-02-15 01:57:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:51,712 INFO L225 Difference]: With dead ends: 54 [2022-02-15 01:57:51,712 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 01:57:51,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:57:51,713 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:51,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 93 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 01:57:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 01:57:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-15 01:57:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2022-02-15 01:57:51,719 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 43 [2022-02-15 01:57:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:51,719 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2022-02-15 01:57:51,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-02-15 01:57:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 01:57:51,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:51,720 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:51,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 01:57:51,720 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1566333842, now seen corresponding path program 15 times [2022-02-15 01:57:51,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:51,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889025577] [2022-02-15 01:57:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:51,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:51,903 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:51,903 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:51,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:52,001 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:52,002 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:52,005 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_60.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_60.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:52,006 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_60.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_60.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:52,028 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_60.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_60.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:52,028 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_60.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_60.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:52,134 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 01:57:54,162 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:54,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889025577] [2022-02-15 01:57:54,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889025577] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:54,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:54,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:57:54,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582836319] [2022-02-15 01:57:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:54,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:57:54,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:57:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:57:54,164 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:56,027 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-02-15 01:57:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:57:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-02-15 01:57:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:56,028 INFO L225 Difference]: With dead ends: 56 [2022-02-15 01:57:56,028 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 01:57:56,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 19 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 01:57:56,029 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:56,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 108 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 01:57:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 01:57:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-02-15 01:57:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-02-15 01:57:56,035 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 45 [2022-02-15 01:57:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:56,035 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-02-15 01:57:56,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-02-15 01:57:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 01:57:56,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:56,036 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:56,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 01:57:56,036 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2050265875, now seen corresponding path program 16 times [2022-02-15 01:57:56,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:56,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324800071] [2022-02-15 01:57:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:56,113 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:56,187 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 01:57:56,188 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:56,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:57:56,288 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:56,288 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:57:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:56,291 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_64.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_64.0)) 4294967296)) 10000000) 0) [2022-02-15 01:57:56,291 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_64.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_64.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:56,301 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_64.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_64.1)) 4294967296)) 10000000) 0) [2022-02-15 01:57:56,301 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_64.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_64.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:57:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:56,400 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 01:57:58,984 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:58,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324800071] [2022-02-15 01:57:58,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [324800071] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:58,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:58,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:57:58,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728148767] [2022-02-15 01:57:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:58,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:57:58,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:57:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:57:58,986 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:01,560 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-02-15 01:58:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:58:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-02-15 01:58:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:01,561 INFO L225 Difference]: With dead ends: 58 [2022-02-15 01:58:01,561 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 01:58:01,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=218, Invalid=1762, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 01:58:01,562 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:01,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 78 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 01:58:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 01:58:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-15 01:58:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-02-15 01:58:01,569 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 47 [2022-02-15 01:58:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:01,569 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-02-15 01:58:01,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-02-15 01:58:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:58:01,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:01,569 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:01,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 01:58:01,570 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1320915848, now seen corresponding path program 17 times [2022-02-15 01:58:01,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:01,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027863454] [2022-02-15 01:58:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:01,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:01,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:01,751 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:01,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:01,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:01,825 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:01,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:01,834 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_68.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_68.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:01,834 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_68.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_68.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:01,856 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_68.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_68.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:01,856 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_68.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_68.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:02,017 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 01:58:04,450 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:04,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027863454] [2022-02-15 01:58:04,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1027863454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:04,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:04,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:58:04,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198991951] [2022-02-15 01:58:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:04,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:58:04,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:58:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:58:04,451 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:06,921 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-02-15 01:58:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 01:58:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-02-15 01:58:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:06,922 INFO L225 Difference]: With dead ends: 60 [2022-02-15 01:58:06,922 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 01:58:06,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 21 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:58:06,925 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:06,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 01:58:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 01:58:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-02-15 01:58:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-02-15 01:58:06,954 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 49 [2022-02-15 01:58:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:06,954 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-02-15 01:58:06,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-02-15 01:58:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 01:58:06,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:06,959 INFO L514 BasicCegarLoop]: trace histogram [20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:06,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 01:58:06,959 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1673756829, now seen corresponding path program 18 times [2022-02-15 01:58:06,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:06,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911246443] [2022-02-15 01:58:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:07,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:07,093 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:07,094 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:07,130 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:09,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:09,223 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:09,226 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_72.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_72.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:09,226 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_72.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_72.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:09,234 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_72.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_72.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:09,235 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_72.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_72.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:58:11,523 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:11,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911246443] [2022-02-15 01:58:11,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1911246443] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:11,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:11,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:58:11,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601363328] [2022-02-15 01:58:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:11,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:58:11,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:58:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:58:11,525 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:13,774 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2022-02-15 01:58:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:58:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:13,775 INFO L225 Difference]: With dead ends: 62 [2022-02-15 01:58:13,775 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 01:58:13,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:58:13,776 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:13,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 118 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 01:58:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 01:58:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-15 01:58:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-02-15 01:58:13,782 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 51 [2022-02-15 01:58:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:13,783 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-02-15 01:58:13,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-02-15 01:58:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:58:13,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:13,783 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:13,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 01:58:13,783 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1926111106, now seen corresponding path program 19 times [2022-02-15 01:58:13,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:13,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582436125] [2022-02-15 01:58:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:13,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:13,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:13,932 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:13,972 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 01:58:14,094 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:14,095 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:14,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:14,098 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_76.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_76.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:14,098 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_76.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_76.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:14,107 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_76.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_76.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:14,107 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_76.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_76.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:14,183 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 01:58:17,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:17,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582436125] [2022-02-15 01:58:17,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1582436125] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:17,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:17,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 01:58:17,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898180383] [2022-02-15 01:58:17,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:17,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 01:58:17,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:17,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 01:58:17,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:58:17,629 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:21,401 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-02-15 01:58:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 01:58:21,403 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:21,403 INFO L225 Difference]: With dead ends: 64 [2022-02-15 01:58:21,403 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 01:58:21,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 23 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:58:21,404 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:21,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 58 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 01:58:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 01:58:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-15 01:58:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-02-15 01:58:21,413 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 53 [2022-02-15 01:58:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:21,413 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-02-15 01:58:21,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-02-15 01:58:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 01:58:21,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:21,413 INFO L514 BasicCegarLoop]: trace histogram [22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:21,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 01:58:21,413 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash 374564569, now seen corresponding path program 20 times [2022-02-15 01:58:21,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:21,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471482910] [2022-02-15 01:58:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:21,476 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:21,535 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 01:58:21,535 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:21,578 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:21,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:21,616 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:21,619 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_80.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_80.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:21,620 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_80.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_80.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:21,631 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_80.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_80.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:21,632 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_80.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_80.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:21,743 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 01:58:24,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:24,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471482910] [2022-02-15 01:58:24,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [471482910] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:24,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:24,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:58:24,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472783280] [2022-02-15 01:58:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:24,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:58:24,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:58:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:58:24,657 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:27,711 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-02-15 01:58:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 01:58:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:27,712 INFO L225 Difference]: With dead ends: 66 [2022-02-15 01:58:27,712 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 01:58:27,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 01:58:27,713 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:27,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 01:58:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 01:58:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-02-15 01:58:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-02-15 01:58:27,720 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 55 [2022-02-15 01:58:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:27,720 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-02-15 01:58:27,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-02-15 01:58:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 01:58:27,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:27,720 INFO L514 BasicCegarLoop]: trace histogram [23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:27,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 01:58:27,721 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash -584269196, now seen corresponding path program 21 times [2022-02-15 01:58:27,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:27,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460069512] [2022-02-15 01:58:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:27,822 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:27,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:27,871 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:27,908 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 01:58:27,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:27,961 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:27,964 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_84.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_84.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:27,964 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_84.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_84.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:27,972 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_84.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_84.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:27,972 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_84.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_84.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:28,065 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 01:58:32,230 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:32,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460069512] [2022-02-15 01:58:32,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [460069512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:32,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:32,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:58:32,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861591363] [2022-02-15 01:58:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:32,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:58:32,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:58:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:58:32,231 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:36,089 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-02-15 01:58:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 01:58:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:36,090 INFO L225 Difference]: With dead ends: 68 [2022-02-15 01:58:36,090 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 01:58:36,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 25 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 01:58:36,091 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:36,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 01:58:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 01:58:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-02-15 01:58:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-02-15 01:58:36,099 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 57 [2022-02-15 01:58:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:36,099 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-02-15 01:58:36,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-02-15 01:58:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 01:58:36,100 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:36,100 INFO L514 BasicCegarLoop]: trace histogram [24, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 01:58:36,100 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1394451279, now seen corresponding path program 22 times [2022-02-15 01:58:36,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:36,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056931506] [2022-02-15 01:58:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:36,152 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:36,222 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:36,222 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:36,261 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:36,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:36,303 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:36,306 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_88.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_88.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:36,306 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_88.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_88.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:36,315 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_88.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_88.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:36,315 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_88.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_88.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:36,399 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 01:58:41,045 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:41,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056931506] [2022-02-15 01:58:41,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2056931506] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:41,045 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:41,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 01:58:41,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841379363] [2022-02-15 01:58:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:41,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 01:58:41,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 01:58:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:58:41,046 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:45,504 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-02-15 01:58:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:58:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:45,504 INFO L225 Difference]: With dead ends: 70 [2022-02-15 01:58:45,504 INFO L226 Difference]: Without dead ends: 63 [2022-02-15 01:58:45,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 01:58:45,506 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:45,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 01:58:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-15 01:58:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-15 01:58:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-02-15 01:58:45,513 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 59 [2022-02-15 01:58:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:45,513 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-02-15 01:58:45,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-02-15 01:58:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 01:58:45,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:45,514 INFO L514 BasicCegarLoop]: trace histogram [25, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:45,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 01:58:45,514 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 274315626, now seen corresponding path program 23 times [2022-02-15 01:58:45,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:45,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852113536] [2022-02-15 01:58:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:45,595 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:45,643 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:45,644 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:45,680 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 01:58:45,719 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:45,720 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:45,722 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_92.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_92.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:45,723 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_92.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_92.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:45,730 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_92.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_92.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:45,730 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_92.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_92.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:45,807 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 01:58:50,469 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:50,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852113536] [2022-02-15 01:58:50,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [852113536] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:50,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:50,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 01:58:50,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224394584] [2022-02-15 01:58:50,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:50,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 01:58:50,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 01:58:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:58:50,470 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:55,068 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2022-02-15 01:58:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:58:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:58:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:55,069 INFO L225 Difference]: With dead ends: 72 [2022-02-15 01:58:55,069 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 01:58:55,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 27 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 01:58:55,070 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:55,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 01:58:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 01:58:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-15 01:58:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-02-15 01:58:55,078 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 61 [2022-02-15 01:58:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:55,078 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-02-15 01:58:55,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:58:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-02-15 01:58:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 01:58:55,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:55,078 INFO L514 BasicCegarLoop]: trace histogram [26, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 01:58:55,078 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1860744389, now seen corresponding path program 24 times [2022-02-15 01:58:55,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:55,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129479896] [2022-02-15 01:58:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:55,940 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:56,003 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:56,003 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:56,039 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:58:56,087 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:56,087 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:58:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:56,090 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_96.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_96.0)) 4294967296)) 10000000) 0) [2022-02-15 01:58:56,090 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_96.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_96.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:56,098 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_96.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_96.1)) 4294967296)) 10000000) 0) [2022-02-15 01:58:56,098 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_96.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_96.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:58:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:56,189 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 01:59:01,107 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:01,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129479896] [2022-02-15 01:59:01,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2129479896] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:01,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:01,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:59:01,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083038427] [2022-02-15 01:59:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:01,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:59:01,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:59:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 01:59:01,108 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:59:06,031 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-02-15 01:59:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:59:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 01:59:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:59:06,032 INFO L225 Difference]: With dead ends: 74 [2022-02-15 01:59:06,032 INFO L226 Difference]: Without dead ends: 67 [2022-02-15 01:59:06,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=306, Invalid=3354, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 01:59:06,033 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:59:06,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 73 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 01:59:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-15 01:59:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-02-15 01:59:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2022-02-15 01:59:06,041 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 63 [2022-02-15 01:59:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:59:06,041 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2022-02-15 01:59:06,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2022-02-15 01:59:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 01:59:06,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:59:06,041 INFO L514 BasicCegarLoop]: trace histogram [27, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:59:06,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 01:59:06,042 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:59:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:59:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1705395552, now seen corresponding path program 25 times [2022-02-15 01:59:06,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:59:06,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376814597] [2022-02-15 01:59:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:59:06,194 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:06,250 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 01:59:06,251 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:06,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:06,365 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:06,366 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:59:06,369 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_100.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_100.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:06,369 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_100.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_100.0)) 4294967296)) 10000000) 0) [2022-02-15 01:59:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:06,376 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_100.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_100.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:06,376 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_100.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_100.1)) 4294967296)) 10000000) 0) [2022-02-15 01:59:06,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:59:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:06,466 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 01:59:11,929 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:11,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376814597] [2022-02-15 01:59:11,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376814597] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:11,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:11,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 01:59:11,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112324151] [2022-02-15 01:59:11,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:11,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 01:59:11,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 01:59:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:59:11,931 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:59:17,125 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-02-15 01:59:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 01:59:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-02-15 01:59:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:59:17,126 INFO L225 Difference]: With dead ends: 76 [2022-02-15 01:59:17,126 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 01:59:17,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 29 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=317, Invalid=3589, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 01:59:17,128 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:59:17,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 68 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 01:59:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 01:59:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-15 01:59:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2022-02-15 01:59:17,137 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 65 [2022-02-15 01:59:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:59:17,137 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2022-02-15 01:59:17,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2022-02-15 01:59:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 01:59:17,137 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:59:17,137 INFO L514 BasicCegarLoop]: trace histogram [28, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:59:17,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 01:59:17,137 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:59:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:59:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1555948741, now seen corresponding path program 26 times [2022-02-15 01:59:17,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:59:17,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177788416] [2022-02-15 01:59:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:59:20,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:20,447 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:20,447 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:20,481 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:20,518 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:20,518 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:59:20,521 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_104.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_104.0)) 4294967296)) 10000000) 0) [2022-02-15 01:59:20,521 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_104.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_104.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:20,531 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_104.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_104.1)) 4294967296)) 10000000) 0) [2022-02-15 01:59:20,531 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_104.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_104.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:59:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:20,614 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 01:59:25,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:25,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177788416] [2022-02-15 01:59:25,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177788416] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:25,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:25,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:59:25,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552609081] [2022-02-15 01:59:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:25,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:59:25,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:59:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 01:59:25,291 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:59:30,111 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-02-15 01:59:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 01:59:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-02-15 01:59:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:59:30,112 INFO L225 Difference]: With dead ends: 78 [2022-02-15 01:59:30,112 INFO L226 Difference]: Without dead ends: 71 [2022-02-15 01:59:30,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 29 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=328, Invalid=3832, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 01:59:30,113 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:59:30,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 153 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 01:59:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-15 01:59:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-02-15 01:59:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-02-15 01:59:30,122 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 67 [2022-02-15 01:59:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:59:30,122 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-02-15 01:59:30,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:30,122 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-02-15 01:59:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 01:59:30,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:59:30,123 INFO L514 BasicCegarLoop]: trace histogram [29, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:59:30,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 01:59:30,123 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:59:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:59:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash -381688234, now seen corresponding path program 27 times [2022-02-15 01:59:30,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:59:30,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061237757] [2022-02-15 01:59:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:59:30,227 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:30,276 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:30,276 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:30,320 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 01:59:30,379 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:30,379 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:30,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:59:30,383 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_108.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_108.0)) 4294967296)) 10000000) 0) [2022-02-15 01:59:30,383 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_108.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_108.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:30,393 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_108.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_108.1)) 4294967296)) 10000000) 0) [2022-02-15 01:59:30,393 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_108.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_108.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:59:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:30,479 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 01:59:35,382 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:35,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061237757] [2022-02-15 01:59:35,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061237757] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:35,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:35,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 01:59:35,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128455791] [2022-02-15 01:59:35,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:35,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 01:59:35,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 01:59:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:59:35,383 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:59:40,709 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-02-15 01:59:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:59:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-02-15 01:59:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:59:40,710 INFO L225 Difference]: With dead ends: 80 [2022-02-15 01:59:40,710 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 01:59:40,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 31 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=339, Invalid=4083, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 01:59:40,712 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:59:40,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 98 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 01:59:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 01:59:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-02-15 01:59:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-02-15 01:59:40,720 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 69 [2022-02-15 01:59:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:59:40,720 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-02-15 01:59:40,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-02-15 01:59:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 01:59:40,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:59:40,721 INFO L514 BasicCegarLoop]: trace histogram [30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:59:40,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 01:59:40,721 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:59:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:59:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1493739855, now seen corresponding path program 28 times [2022-02-15 01:59:40,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:59:40,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923656331] [2022-02-15 01:59:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:59:41,334 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:41,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:41,452 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:41,489 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 01:59:41,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:41,575 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:59:41,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_112.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_112.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:41,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_112.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_112.0)) 4294967296)) 10000000) 0) [2022-02-15 01:59:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:41,593 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_112.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_112.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:41,593 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_112.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_112.1)) 4294967296)) 10000000) 0) [2022-02-15 01:59:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:59:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:41,682 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 01:59:46,579 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:46,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923656331] [2022-02-15 01:59:46,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [923656331] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:46,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:46,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 01:59:46,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143095210] [2022-02-15 01:59:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:46,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 01:59:46,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 01:59:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 01:59:46,581 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:59:51,614 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-02-15 01:59:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 01:59:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-02-15 01:59:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:59:51,615 INFO L225 Difference]: With dead ends: 82 [2022-02-15 01:59:51,615 INFO L226 Difference]: Without dead ends: 75 [2022-02-15 01:59:51,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 32 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=350, Invalid=4342, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 01:59:51,616 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:59:51,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 01:59:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-15 01:59:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-02-15 01:59:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-02-15 01:59:51,626 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 71 [2022-02-15 01:59:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:59:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-02-15 01:59:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:59:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-02-15 01:59:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 01:59:51,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:59:51,627 INFO L514 BasicCegarLoop]: trace histogram [31, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:59:51,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 01:59:51,627 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:59:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:59:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash -728490932, now seen corresponding path program 29 times [2022-02-15 01:59:51,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:59:51,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549100025] [2022-02-15 01:59:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:59:51,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:51,784 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:59:51,784 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:51,820 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 01:59:51,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:59:51,877 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:59:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:59:51,881 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_116.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_116.0)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:51,881 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_116.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_116.0)) 4294967296)) 10000000) 0) [2022-02-15 01:59:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:51,892 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_116.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_116.1)) 4294967296)) 100000000) 0)) [2022-02-15 01:59:51,892 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_116.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_116.1)) 4294967296)) 10000000) 0) [2022-02-15 01:59:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:59:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:59:52,035 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 01:59:56,605 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:59:56,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549100025] [2022-02-15 01:59:56,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549100025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:59:56,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:59:56,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 01:59:56,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314989719] [2022-02-15 01:59:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:59:56,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 01:59:56,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:59:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 01:59:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:59:56,607 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:01,366 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-02-15 02:00:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:00:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-02-15 02:00:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:01,367 INFO L225 Difference]: With dead ends: 84 [2022-02-15 02:00:01,367 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 02:00:01,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 4 SyntacticMatches, 33 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=361, Invalid=4609, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:00:01,368 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:01,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 88 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 02:00:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 02:00:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-02-15 02:00:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2022-02-15 02:00:01,379 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 73 [2022-02-15 02:00:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:01,379 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2022-02-15 02:00:01,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2022-02-15 02:00:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 02:00:01,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:01,379 INFO L514 BasicCegarLoop]: trace histogram [32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:01,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 02:00:01,379 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 236316455, now seen corresponding path program 30 times [2022-02-15 02:00:01,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:01,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917788080] [2022-02-15 02:00:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:01,605 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:01,670 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:00:01,671 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:01,714 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 02:00:01,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:01,773 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:01,780 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_120.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_120.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:01,781 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_120.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_120.0)) 4294967296)) 10000000) 0) [2022-02-15 02:00:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:01,791 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_120.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_120.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:01,791 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_120.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_120.1)) 4294967296)) 10000000) 0) [2022-02-15 02:00:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:01,897 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 02:00:07,872 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:07,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917788080] [2022-02-15 02:00:07,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1917788080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:07,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:07,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:00:07,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912737275] [2022-02-15 02:00:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:07,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:00:07,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:00:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 02:00:07,874 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:14,842 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-02-15 02:00:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:00:14,843 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-02-15 02:00:14,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:14,843 INFO L225 Difference]: With dead ends: 86 [2022-02-15 02:00:14,843 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 02:00:14,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 4 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=372, Invalid=4884, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:00:14,844 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:14,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 98 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-15 02:00:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 02:00:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-02-15 02:00:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-02-15 02:00:14,857 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 75 [2022-02-15 02:00:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:14,857 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-02-15 02:00:14,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-02-15 02:00:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 02:00:14,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:14,858 INFO L514 BasicCegarLoop]: trace histogram [33, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:14,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 02:00:14,858 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash -296720574, now seen corresponding path program 31 times [2022-02-15 02:00:14,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:14,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100268899] [2022-02-15 02:00:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:14,952 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:15,018 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:00:15,018 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:15,061 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:00:15,114 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:15,114 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:15,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:15,118 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_124.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_124.0)) 4294967296)) 10000000) 0) [2022-02-15 02:00:15,119 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_124.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_124.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:15,136 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_124.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_124.1)) 4294967296)) 10000000) 0) [2022-02-15 02:00:15,137 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_124.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_124.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:15,267 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 02:00:21,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:21,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100268899] [2022-02-15 02:00:21,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2100268899] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:21,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:21,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:00:21,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093724693] [2022-02-15 02:00:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:21,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:00:21,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:00:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:00:21,628 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:29,010 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2022-02-15 02:00:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:00:29,010 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-02-15 02:00:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:29,011 INFO L225 Difference]: With dead ends: 88 [2022-02-15 02:00:29,011 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 02:00:29,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 4 SyntacticMatches, 35 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=383, Invalid=5167, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:00:29,012 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 75 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:29,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 158 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-02-15 02:00:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 02:00:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-02-15 02:00:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2022-02-15 02:00:29,023 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 77 [2022-02-15 02:00:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:29,023 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2022-02-15 02:00:29,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2022-02-15 02:00:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 02:00:29,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:29,024 INFO L514 BasicCegarLoop]: trace histogram [34, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:29,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 02:00:29,024 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1444197219, now seen corresponding path program 32 times [2022-02-15 02:00:29,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:29,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325479286] [2022-02-15 02:00:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:29,102 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:29,158 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:00:29,159 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:29,208 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:00:29,309 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:29,309 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:29,312 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_128.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_128.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:29,312 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_128.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_128.0)) 4294967296)) 10000000) 0) [2022-02-15 02:00:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:29,319 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_128.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_128.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:29,319 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_128.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_128.1)) 4294967296)) 10000000) 0) [2022-02-15 02:00:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:29,418 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 02:00:38,315 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:38,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325479286] [2022-02-15 02:00:38,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [325479286] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:38,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:38,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:00:38,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367703706] [2022-02-15 02:00:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:38,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:00:38,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:00:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:00:38,317 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:47,009 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-02-15 02:00:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:00:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-02-15 02:00:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:47,010 INFO L225 Difference]: With dead ends: 90 [2022-02-15 02:00:47,010 INFO L226 Difference]: Without dead ends: 83 [2022-02-15 02:00:47,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 4 SyntacticMatches, 36 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=394, Invalid=5458, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:00:47,011 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 77 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:47,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 78 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-02-15 02:00:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-15 02:00:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-02-15 02:00:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2022-02-15 02:00:47,023 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 79 [2022-02-15 02:00:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:47,023 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2022-02-15 02:00:47,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:00:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2022-02-15 02:00:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:00:47,023 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:47,023 INFO L514 BasicCegarLoop]: trace histogram [35, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:47,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 02:00:47,023 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -362657992, now seen corresponding path program 33 times [2022-02-15 02:00:47,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:47,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339045002] [2022-02-15 02:00:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:47,115 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:47,295 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 02:00:47,295 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:47,332 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 02:00:47,374 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:47,374 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:00:47,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:47,383 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_132.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_132.0)) 4294967296)) 10000000) 0) [2022-02-15 02:00:47,384 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_132.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_132.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:47,392 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_132.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_132.1)) 4294967296)) 10000000) 0) [2022-02-15 02:00:47,392 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_132.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_132.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:00:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:00:54,041 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:54,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339045002] [2022-02-15 02:00:54,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339045002] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:54,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:54,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 02:00:54,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234414656] [2022-02-15 02:00:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:54,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 02:00:54,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 02:00:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1650, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:00:54,043 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:01,118 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-02-15 02:01:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 02:01:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:01:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:01,128 INFO L225 Difference]: With dead ends: 92 [2022-02-15 02:01:01,128 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 02:01:01,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 37 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=405, Invalid=5757, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:01:01,142 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:01,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 113 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 02:01:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 02:01:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-02-15 02:01:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-02-15 02:01:01,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 81 [2022-02-15 02:01:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:01,155 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-02-15 02:01:01,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-02-15 02:01:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 02:01:01,155 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:01,155 INFO L514 BasicCegarLoop]: trace histogram [36, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:01,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 02:01:01,155 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash -385546477, now seen corresponding path program 34 times [2022-02-15 02:01:01,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:01,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632486757] [2022-02-15 02:01:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:01,261 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:01,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:01,319 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:01,354 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:01,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:01,398 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:01,401 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_136.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_136.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:01,401 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_136.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_136.0)) 4294967296)) 10000000) 0) [2022-02-15 02:01:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:01,408 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_136.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_136.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:01,408 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_136.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_136.1)) 4294967296)) 10000000) 0) [2022-02-15 02:01:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:01,504 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 02:01:07,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:07,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632486757] [2022-02-15 02:01:07,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [632486757] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:07,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:07,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 02:01:07,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172913240] [2022-02-15 02:01:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:07,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 02:01:07,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 02:01:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:01:07,765 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:14,510 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2022-02-15 02:01:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:01:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:01:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:14,511 INFO L225 Difference]: With dead ends: 94 [2022-02-15 02:01:14,511 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 02:01:14,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 38 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=416, Invalid=6064, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:01:14,511 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:14,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 38 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 02:01:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 02:01:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-02-15 02:01:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-02-15 02:01:14,523 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 83 [2022-02-15 02:01:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:14,523 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-02-15 02:01:14,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-02-15 02:01:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 02:01:14,524 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:14,524 INFO L514 BasicCegarLoop]: trace histogram [37, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:14,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 02:01:14,524 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash -906544082, now seen corresponding path program 35 times [2022-02-15 02:01:14,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:14,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806199701] [2022-02-15 02:01:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:15,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:15,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:15,068 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:15,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:15,158 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:15,159 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:15,161 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_140.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_140.0)) 4294967296)) 10000000) 0) [2022-02-15 02:01:15,162 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_140.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_140.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:15,180 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_140.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_140.1)) 4294967296)) 10000000) 0) [2022-02-15 02:01:15,181 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_140.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_140.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:15,324 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 02:01:25,595 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:25,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806199701] [2022-02-15 02:01:25,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1806199701] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:25,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:25,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 02:01:25,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410278332] [2022-02-15 02:01:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:25,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 02:01:25,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 02:01:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:01:25,597 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:37,191 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2022-02-15 02:01:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 02:01:37,191 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:01:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:37,192 INFO L225 Difference]: With dead ends: 96 [2022-02-15 02:01:37,192 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 02:01:37,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 4 SyntacticMatches, 39 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=427, Invalid=6379, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:01:37,193 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 83 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:37,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 163 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-02-15 02:01:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 02:01:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-02-15 02:01:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-02-15 02:01:37,208 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 85 [2022-02-15 02:01:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:37,208 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-02-15 02:01:37,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-02-15 02:01:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:01:37,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:37,209 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:37,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 02:01:37,209 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:37,210 INFO L85 PathProgramCache]: Analyzing trace with hash 925931145, now seen corresponding path program 36 times [2022-02-15 02:01:37,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:37,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099671524] [2022-02-15 02:01:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:37,295 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:37,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:37,369 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:37,415 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:37,467 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:37,467 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:37,470 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_144.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_144.0)) 4294967296)) 10000000) 0) [2022-02-15 02:01:37,470 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_144.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_144.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:37,476 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_144.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_144.1)) 4294967296)) 10000000) 0) [2022-02-15 02:01:37,476 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_144.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_144.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:37,632 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 02:01:44,173 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:44,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099671524] [2022-02-15 02:01:44,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1099671524] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:44,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:44,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 02:01:44,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176673634] [2022-02-15 02:01:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:44,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 02:01:44,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 02:01:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:01:44,174 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:51,602 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-02-15 02:01:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:01:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:01:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:51,603 INFO L225 Difference]: With dead ends: 98 [2022-02-15 02:01:51,603 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 02:01:51,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 4 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=438, Invalid=6702, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:01:51,604 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 85 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:51,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 88 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:01:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 02:01:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-15 02:01:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2022-02-15 02:01:51,620 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 87 [2022-02-15 02:01:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:51,620 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2022-02-15 02:01:51,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:01:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2022-02-15 02:01:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:01:51,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:51,620 INFO L514 BasicCegarLoop]: trace histogram [39, 37, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:51,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 02:01:51,620 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash 998032932, now seen corresponding path program 37 times [2022-02-15 02:01:51,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:51,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248754898] [2022-02-15 02:01:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:51,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:51,864 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:01:51,864 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:51,902 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 02:01:51,949 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:51,949 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:01:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:51,952 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_148.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_148.0)) 4294967296)) 10000000) 0) [2022-02-15 02:01:51,952 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_148.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_148.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:51,979 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_148.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_148.1)) 4294967296)) 10000000) 0) [2022-02-15 02:01:51,979 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_148.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_148.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:01:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:02:02,624 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:02:02,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248754898] [2022-02-15 02:02:02,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [248754898] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:02:02,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:02:02,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 02:02:02,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936446896] [2022-02-15 02:02:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:02:02,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 02:02:02,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:02:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 02:02:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:02:02,626 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:02:15,402 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-02-15 02:02:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:02:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:02:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:02:15,403 INFO L225 Difference]: With dead ends: 100 [2022-02-15 02:02:15,403 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 02:02:15,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 4 SyntacticMatches, 41 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=449, Invalid=7033, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:02:15,404 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 87 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:02:15,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 38 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-02-15 02:02:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 02:02:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-02-15 02:02:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2022-02-15 02:02:15,423 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 89 [2022-02-15 02:02:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:02:15,423 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2022-02-15 02:02:15,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:15,424 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2022-02-15 02:02:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 02:02:15,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:02:15,424 INFO L514 BasicCegarLoop]: trace histogram [40, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:02:15,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 02:02:15,424 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:02:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:02:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1568373503, now seen corresponding path program 38 times [2022-02-15 02:02:15,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:02:15,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159486193] [2022-02-15 02:02:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:02:15,472 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:15,545 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:15,545 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:15,583 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:15,626 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:15,627 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:02:15,629 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_152.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_152.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:02:15,629 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_152.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_152.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:02:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:15,640 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_152.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_152.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:02:15,640 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_152.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_152.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:02:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:02:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:15,744 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 02:02:23,656 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:02:23,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159486193] [2022-02-15 02:02:23,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1159486193] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:02:23,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:02:23,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 02:02:23,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439786541] [2022-02-15 02:02:23,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:02:23,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 02:02:23,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:02:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 02:02:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:02:23,657 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:02:32,386 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-02-15 02:02:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:02:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:02:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:02:32,387 INFO L225 Difference]: With dead ends: 102 [2022-02-15 02:02:32,387 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 02:02:32,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 42 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=460, Invalid=7372, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:02:32,388 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:02:32,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 218 Invalid, 3660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-02-15 02:02:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 02:02:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-02-15 02:02:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-02-15 02:02:32,401 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 91 [2022-02-15 02:02:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:02:32,401 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-02-15 02:02:32,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-02-15 02:02:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:02:32,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:02:32,401 INFO L514 BasicCegarLoop]: trace histogram [41, 39, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:02:32,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 02:02:32,401 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:02:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:02:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -90151654, now seen corresponding path program 39 times [2022-02-15 02:02:32,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:02:32,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64681118] [2022-02-15 02:02:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:02:32,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:32,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:32,695 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:32,724 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:32,828 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:32,829 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:32,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:02:32,844 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_156.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_156.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:02:32,845 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_156.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_156.0)) 4294967296)) 10000000) 0) [2022-02-15 02:02:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:32,865 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_156.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_156.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:02:32,866 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_156.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_156.1)) 4294967296)) 10000000) 0) [2022-02-15 02:02:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:02:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:32,952 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 02:02:42,091 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:02:42,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64681118] [2022-02-15 02:02:42,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [64681118] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:02:42,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:02:42,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 02:02:42,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605985469] [2022-02-15 02:02:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:02:42,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 02:02:42,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:02:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 02:02:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:02:42,092 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:02:54,244 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2022-02-15 02:02:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:02:54,244 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:02:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:02:54,245 INFO L225 Difference]: With dead ends: 104 [2022-02-15 02:02:54,245 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 02:02:54,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 4 SyntacticMatches, 43 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=471, Invalid=7719, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:02:54,246 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:02:54,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 138 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-02-15 02:02:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 02:02:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-02-15 02:02:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2022-02-15 02:02:54,258 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 93 [2022-02-15 02:02:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:02:54,258 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2022-02-15 02:02:54,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2022-02-15 02:02:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-15 02:02:54,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:02:54,259 INFO L514 BasicCegarLoop]: trace histogram [42, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:02:54,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 02:02:54,259 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:02:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:02:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash -499960715, now seen corresponding path program 40 times [2022-02-15 02:02:54,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:02:54,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981298879] [2022-02-15 02:02:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:02:54,380 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:54,445 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:54,445 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:54,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:02:54,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:02:54,539 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:02:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:02:54,542 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_160.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_160.0)) 4294967296)) 10000000) 0) [2022-02-15 02:02:54,542 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_160.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_160.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:02:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:54,550 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_160.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_160.1)) 4294967296)) 10000000) 0) [2022-02-15 02:02:54,550 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_160.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_160.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:02:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:02:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:54,645 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 02:03:03,838 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:03:03,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981298879] [2022-02-15 02:03:03,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981298879] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:03:03,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:03:03,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 02:03:03,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366885712] [2022-02-15 02:03:03,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:03:03,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 02:03:03,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:03:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 02:03:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2266, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 02:03:03,839 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:03:13,689 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-02-15 02:03:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:03:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-02-15 02:03:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:03:13,690 INFO L225 Difference]: With dead ends: 106 [2022-02-15 02:03:13,690 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 02:03:13,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 4 SyntacticMatches, 44 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=482, Invalid=8074, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:03:13,691 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 93 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:03:13,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 113 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-02-15 02:03:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 02:03:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-15 02:03:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2022-02-15 02:03:13,705 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 95 [2022-02-15 02:03:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:03:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2022-02-15 02:03:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2022-02-15 02:03:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 02:03:13,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:03:13,711 INFO L514 BasicCegarLoop]: trace histogram [43, 41, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:03:13,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 02:03:13,711 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:03:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:03:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash 810522896, now seen corresponding path program 41 times [2022-02-15 02:03:13,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:03:13,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825525902] [2022-02-15 02:03:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:03:13,755 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:03:13,859 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 02:03:13,859 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:03:13,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:03:13,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:03:13,942 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:03:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:03:13,960 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_164.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_164.0)) 4294967296)) 10000000) 0) [2022-02-15 02:03:13,960 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_164.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_164.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:03:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:13,986 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_164.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_164.1)) 4294967296)) 10000000) 0) [2022-02-15 02:03:13,986 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_164.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_164.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:03:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:03:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:14,048 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 02:03:26,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:03:26,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825525902] [2022-02-15 02:03:26,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [825525902] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:03:26,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:03:26,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 02:03:26,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156729287] [2022-02-15 02:03:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:03:26,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 02:03:26,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:03:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 02:03:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2362, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:03:26,811 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:03:40,347 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2022-02-15 02:03:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:03:40,348 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-02-15 02:03:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:03:40,348 INFO L225 Difference]: With dead ends: 108 [2022-02-15 02:03:40,348 INFO L226 Difference]: Without dead ends: 101 [2022-02-15 02:03:40,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 4 SyntacticMatches, 45 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=493, Invalid=8437, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:03:40,349 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4130 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:03:40,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 203 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4130 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-02-15 02:03:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-15 02:03:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-02-15 02:03:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2022-02-15 02:03:40,362 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 97 [2022-02-15 02:03:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:03:40,362 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2022-02-15 02:03:40,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2022-02-15 02:03:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 02:03:40,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:03:40,362 INFO L514 BasicCegarLoop]: trace histogram [44, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:03:40,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 02:03:40,363 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:03:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:03:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1759855339, now seen corresponding path program 42 times [2022-02-15 02:03:40,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:03:40,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425741342] [2022-02-15 02:03:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:03:40,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:03:40,702 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 02:03:40,702 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:03:40,741 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:03:40,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:03:40,788 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:03:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:03:40,791 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_168.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_168.0)) 4294967296)) 10000000) 0) [2022-02-15 02:03:40,791 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_168.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_168.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:03:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:40,797 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_168.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_168.1)) 4294967296)) 10000000) 0) [2022-02-15 02:03:40,798 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_168.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_168.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:03:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:03:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:40,880 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 02:03:57,129 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:03:57,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425741342] [2022-02-15 02:03:57,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [425741342] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:03:57,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:03:57,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-15 02:03:57,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180427100] [2022-02-15 02:03:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:03:57,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-15 02:03:57,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:03:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-15 02:03:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2460, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 02:03:57,131 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 50 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:04:12,320 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2022-02-15 02:04:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 02:04:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-02-15 02:04:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:04:12,321 INFO L225 Difference]: With dead ends: 110 [2022-02-15 02:04:12,321 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 02:04:12,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 4 SyntacticMatches, 46 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=504, Invalid=8808, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:04:12,321 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:04:12,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 203 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-02-15 02:04:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 02:04:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-02-15 02:04:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 98 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2022-02-15 02:04:12,334 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 99 [2022-02-15 02:04:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:04:12,335 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2022-02-15 02:04:12,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2022-02-15 02:04:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 02:04:12,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:04:12,335 INFO L514 BasicCegarLoop]: trace histogram [45, 43, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:04:12,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 02:04:12,335 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:04:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:04:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -759700986, now seen corresponding path program 43 times [2022-02-15 02:04:12,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:04:12,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836832736] [2022-02-15 02:04:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:04:12,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:04:12,933 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 02:04:12,933 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:04:12,970 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 02:04:13,024 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:04:13,024 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:04:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:04:13,027 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_172.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_172.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:04:13,027 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_172.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_172.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:04:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:04:13,034 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_172.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_172.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:04:13,038 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_172.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_172.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:04:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:04:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:04:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:04:27,689 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:04:27,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836832736] [2022-02-15 02:04:27,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [836832736] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:04:27,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:04:27,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 02:04:27,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891180566] [2022-02-15 02:04:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:04:27,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 02:04:27,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:04:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 02:04:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2560, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:04:27,690 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:04:42,970 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2022-02-15 02:04:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 02:04:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2022-02-15 02:04:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:04:42,971 INFO L225 Difference]: With dead ends: 112 [2022-02-15 02:04:42,971 INFO L226 Difference]: Without dead ends: 105 [2022-02-15 02:04:42,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 4 SyntacticMatches, 47 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=515, Invalid=9187, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:04:42,972 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:04:42,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 98 Invalid, 4333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-02-15 02:04:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-15 02:04:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-02-15 02:04:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2022-02-15 02:04:42,985 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 101 [2022-02-15 02:04:42,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:04:42,986 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2022-02-15 02:04:42,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:04:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2022-02-15 02:04:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-15 02:04:42,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:04:42,986 INFO L514 BasicCegarLoop]: trace histogram [46, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:04:42,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 02:04:42,986 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:04:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:04:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash 308225633, now seen corresponding path program 44 times [2022-02-15 02:04:42,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:04:42,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626140003] [2022-02-15 02:04:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:04:43,076 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:04:43,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:04:43,171 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:04:43,228 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 02:04:43,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:04:43,297 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:04:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:04:43,301 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_176.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_176.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:04:43,301 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_176.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_176.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:04:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:04:43,325 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_176.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_176.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:04:43,328 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_176.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_176.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:04:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:04:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:04:43,427 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 02:04:52,505 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:04:52,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626140003] [2022-02-15 02:04:52,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626140003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:04:52,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:04:52,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 02:04:52,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294299823] [2022-02-15 02:04:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:04:52,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 02:04:52,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:04:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 02:04:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 02:04:52,506 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 50 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:05:03,354 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2022-02-15 02:05:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 02:05:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 50 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2022-02-15 02:05:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:05:03,355 INFO L225 Difference]: With dead ends: 114 [2022-02-15 02:05:03,355 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 02:05:03,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 4 SyntacticMatches, 48 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=526, Invalid=9574, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:05:03,356 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 101 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:05:03,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 173 Invalid, 4638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 4538 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-02-15 02:05:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 02:05:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-02-15 02:05:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 102 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2022-02-15 02:05:03,369 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 103 [2022-02-15 02:05:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:05:03,369 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2022-02-15 02:05:03,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 50 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2022-02-15 02:05:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 02:05:03,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:05:03,370 INFO L514 BasicCegarLoop]: trace histogram [47, 45, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:05:03,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 02:05:03,370 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:05:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:05:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 88522748, now seen corresponding path program 45 times [2022-02-15 02:05:03,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:05:03,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838862539] [2022-02-15 02:05:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:05:03,415 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:05:03,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:05:03,473 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:05:03,512 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:05:03,576 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:05:03,577 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:05:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:05:03,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_180.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_180.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:05:03,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_180.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_180.0)) 4294967296)) 10000000) 0) [2022-02-15 02:05:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:03,585 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_180.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_180.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:05:03,585 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_180.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_180.1)) 4294967296)) 10000000) 0) [2022-02-15 02:05:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:05:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:03,681 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 02:05:19,265 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:05:19,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838862539] [2022-02-15 02:05:19,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1838862539] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:05:19,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:05:19,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 02:05:19,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091700443] [2022-02-15 02:05:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:05:19,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 02:05:19,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:05:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 02:05:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2766, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:05:19,267 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 51 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:05:37,382 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2022-02-15 02:05:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 02:05:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 51 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2022-02-15 02:05:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:05:37,383 INFO L225 Difference]: With dead ends: 116 [2022-02-15 02:05:37,383 INFO L226 Difference]: Without dead ends: 109 [2022-02-15 02:05:37,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 4 SyntacticMatches, 49 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=537, Invalid=9969, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:05:37,384 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 103 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4846 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:05:37,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 193 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4846 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-02-15 02:05:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-15 02:05:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-02-15 02:05:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 104 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2022-02-15 02:05:37,402 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 105 [2022-02-15 02:05:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:05:37,403 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2022-02-15 02:05:37,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 51 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:05:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2022-02-15 02:05:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-15 02:05:37,403 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:05:37,403 INFO L514 BasicCegarLoop]: trace histogram [48, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:05:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 02:05:37,403 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:05:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:05:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash -592552233, now seen corresponding path program 46 times [2022-02-15 02:05:37,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:05:37,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984511961] [2022-02-15 02:05:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:05:37,477 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:05:37,536 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:05:37,537 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:05:37,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:05:37,903 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:05:37,904 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:05:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:05:37,906 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_184.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_184.0) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:05:37,906 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_184.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_184.0) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:05:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:37,912 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_184.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_184.1) main_~x~0_6) 4294967296)) 10000000) 0) [2022-02-15 02:05:37,912 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_184.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_184.1) main_~x~0_6) 4294967296)) 100000000) 0)) [2022-02-15 02:05:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:05:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:38,010 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 02:05:55,891 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:05:55,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984511961] [2022-02-15 02:05:55,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [984511961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:05:55,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:05:55,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 02:05:55,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481830758] [2022-02-15 02:05:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:05:55,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 02:05:55,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:05:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 02:05:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2872, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:05:55,892 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:06:16,319 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2022-02-15 02:06:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 02:06:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-02-15 02:06:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:06:16,320 INFO L225 Difference]: With dead ends: 118 [2022-02-15 02:06:16,320 INFO L226 Difference]: Without dead ends: 111 [2022-02-15 02:06:16,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 4 SyntacticMatches, 50 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=548, Invalid=10372, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:06:16,321 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:06:16,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 263 Invalid, 5164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-02-15 02:06:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-15 02:06:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-02-15 02:06:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 106 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2022-02-15 02:06:16,335 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 107 [2022-02-15 02:06:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:06:16,335 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2022-02-15 02:06:16,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2022-02-15 02:06:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-15 02:06:16,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:06:16,336 INFO L514 BasicCegarLoop]: trace histogram [49, 47, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:06:16,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 02:06:16,336 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:06:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:06:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2024387314, now seen corresponding path program 47 times [2022-02-15 02:06:16,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:06:16,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284281448] [2022-02-15 02:06:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:06:16,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:06:16,596 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:06:16,596 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:06:16,636 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:06:16,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:06:16,676 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:06:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:06:16,679 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_188.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_188.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:06:16,679 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_188.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_188.0)) 4294967296)) 10000000) 0) [2022-02-15 02:06:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:06:16,685 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_188.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_188.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:06:16,685 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_188.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_188.1)) 4294967296)) 10000000) 0) [2022-02-15 02:06:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:06:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:06:16,778 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 02:06:30,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:06:30,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284281448] [2022-02-15 02:06:30,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [284281448] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:06:30,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:06:30,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 02:06:30,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047045565] [2022-02-15 02:06:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:06:30,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 02:06:30,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:06:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 02:06:30,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2980, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:06:30,462 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 53 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:06:44,317 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2022-02-15 02:06:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 02:06:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 53 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-02-15 02:06:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:06:44,318 INFO L225 Difference]: With dead ends: 120 [2022-02-15 02:06:44,318 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 02:06:44,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 4 SyntacticMatches, 51 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=559, Invalid=10783, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:06:44,319 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4919 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 5025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:06:44,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 53 Invalid, 5025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4919 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-02-15 02:06:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 02:06:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-15 02:06:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2022-02-15 02:06:44,335 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 109 [2022-02-15 02:06:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:06:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2022-02-15 02:06:44,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 53 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:06:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2022-02-15 02:06:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-15 02:06:44,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:06:44,336 INFO L514 BasicCegarLoop]: trace histogram [50, 48, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:06:44,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 02:06:44,336 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:06:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:06:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 52456525, now seen corresponding path program 48 times [2022-02-15 02:06:44,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:06:44,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283896066] [2022-02-15 02:06:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:06:44,403 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:06:44,903 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:06:44,904 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:06:44,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:06:45,061 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:06:45,061 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:06:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:06:45,064 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_192.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_192.0)) 4294967296)) 10000000) 0) [2022-02-15 02:06:45,064 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_192.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_192.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:06:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:06:45,070 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_192.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_192.1)) 4294967296)) 10000000) 0) [2022-02-15 02:06:45,070 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_192.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_192.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:06:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:06:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:06:45,194 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 02:06:59,533 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:06:59,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283896066] [2022-02-15 02:06:59,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1283896066] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:06:59,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:06:59,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 02:06:59,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82358852] [2022-02-15 02:06:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:06:59,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 02:06:59,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:06:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 02:06:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=3090, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 02:06:59,535 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 56 states, 55 states have (on average 1.9454545454545455) internal successors, (107), 54 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:07:17,176 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2022-02-15 02:07:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 02:07:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.9454545454545455) internal successors, (107), 54 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 02:07:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:07:17,177 INFO L225 Difference]: With dead ends: 122 [2022-02-15 02:07:17,177 INFO L226 Difference]: Without dead ends: 115 [2022-02-15 02:07:17,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 4 SyntacticMatches, 52 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=570, Invalid=11202, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:07:17,178 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 109 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 5562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:07:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 263 Invalid, 5562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 5454 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-02-15 02:07:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-15 02:07:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-02-15 02:07:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2022-02-15 02:07:17,193 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 111 [2022-02-15 02:07:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:07:17,193 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2022-02-15 02:07:17,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.9454545454545455) internal successors, (107), 54 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2022-02-15 02:07:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 02:07:17,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:07:17,193 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:07:17,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:07:17,193 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:07:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:07:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash -892454168, now seen corresponding path program 49 times [2022-02-15 02:07:17,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:07:17,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547646648] [2022-02-15 02:07:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:07:17,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:07:17,358 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:07:17,358 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:07:17,396 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 02:07:17,438 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:07:17,438 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:07:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:07:17,440 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_196.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_196.0)) 4294967296)) 10000000) 0) [2022-02-15 02:07:17,441 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_196.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_196.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:07:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:07:17,447 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_196.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_196.1)) 4294967296)) 10000000) 0) [2022-02-15 02:07:17,447 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_196.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_196.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:07:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:07:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:07:17,519 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 02:07:36,513 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:07:36,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547646648] [2022-02-15 02:07:36,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [547646648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:07:36,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:07:36,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 02:07:36,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012156209] [2022-02-15 02:07:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:07:36,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 02:07:36,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:07:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 02:07:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3202, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:07:36,514 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:07:57,223 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2022-02-15 02:07:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 02:07:57,223 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-02-15 02:07:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:07:57,224 INFO L225 Difference]: With dead ends: 124 [2022-02-15 02:07:57,224 INFO L226 Difference]: Without dead ends: 117 [2022-02-15 02:07:57,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 4 SyntacticMatches, 53 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=581, Invalid=11629, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:07:57,225 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 111 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 5465 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 5575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 5465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:07:57,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 143 Invalid, 5575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 5465 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-02-15 02:07:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-15 02:07:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-02-15 02:07:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-02-15 02:07:57,241 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 113 [2022-02-15 02:07:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:07:57,241 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-02-15 02:07:57,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:07:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-02-15 02:07:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 02:07:57,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:07:57,242 INFO L514 BasicCegarLoop]: trace histogram [52, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:07:57,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:07:57,242 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:07:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:07:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1581436611, now seen corresponding path program 50 times [2022-02-15 02:07:57,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:07:57,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524760692] [2022-02-15 02:07:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:07:57,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:07:57,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:07:57,376 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:07:57,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:07:57,481 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:07:57,482 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:07:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:07:57,484 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_200.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_200.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:07:57,485 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_200.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_200.0)) 4294967296)) 10000000) 0) [2022-02-15 02:07:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:07:57,490 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_200.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_200.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:07:57,491 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_200.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_200.1)) 4294967296)) 10000000) 0) [2022-02-15 02:07:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:07:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:07:57,602 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 02:08:17,049 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:08:17,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524760692] [2022-02-15 02:08:17,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1524760692] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:08:17,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:08:17,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 02:08:17,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325922094] [2022-02-15 02:08:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:08:17,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 02:08:17,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:08:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 02:08:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:08:17,051 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:08:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:08:38,606 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2022-02-15 02:08:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 02:08:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-02-15 02:08:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:08:38,607 INFO L225 Difference]: With dead ends: 126 [2022-02-15 02:08:38,607 INFO L226 Difference]: Without dead ends: 119 [2022-02-15 02:08:38,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 4 SyntacticMatches, 54 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=592, Invalid=12064, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:08:38,608 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 113 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 6051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:08:38,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 248 Invalid, 6051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 5939 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-02-15 02:08:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-15 02:08:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-02-15 02:08:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:08:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2022-02-15 02:08:38,623 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 115 [2022-02-15 02:08:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:08:38,623 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2022-02-15 02:08:38,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:08:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2022-02-15 02:08:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-15 02:08:38,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:08:38,623 INFO L514 BasicCegarLoop]: trace histogram [53, 51, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:08:38,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:08:38,623 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:08:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:08:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash -421406754, now seen corresponding path program 51 times [2022-02-15 02:08:38,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:08:38,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903260136] [2022-02-15 02:08:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:08:38,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:08:38,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:08:38,749 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:08:38,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:08:38,835 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:08:38,835 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:08:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:08:38,837 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_204.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_204.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:08:38,838 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_204.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_204.0)) 4294967296)) 10000000) 0) [2022-02-15 02:08:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:08:38,847 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_204.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_204.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:08:38,848 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_204.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_204.1)) 4294967296)) 10000000) 0) [2022-02-15 02:08:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:08:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:08:39,007 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 02:08:54,198 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:08:54,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903260136] [2022-02-15 02:08:54,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [903260136] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:08:54,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:08:54,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 02:08:54,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150611387] [2022-02-15 02:08:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:08:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 02:08:54,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:08:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 02:08:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:08:54,200 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 59 states, 58 states have (on average 1.9482758620689655) internal successors, (113), 57 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:09:10,978 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2022-02-15 02:09:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 02:09:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.9482758620689655) internal successors, (113), 57 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2022-02-15 02:09:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:09:10,979 INFO L225 Difference]: With dead ends: 128 [2022-02-15 02:09:10,979 INFO L226 Difference]: Without dead ends: 121 [2022-02-15 02:09:10,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 4 SyntacticMatches, 55 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=603, Invalid=12507, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:09:10,980 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:09:10,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 188 Invalid, 6170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-02-15 02:09:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-15 02:09:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-02-15 02:09:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 116 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2022-02-15 02:09:10,996 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 117 [2022-02-15 02:09:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:09:10,996 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2022-02-15 02:09:10,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.9482758620689655) internal successors, (113), 57 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2022-02-15 02:09:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-15 02:09:10,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:09:10,997 INFO L514 BasicCegarLoop]: trace histogram [54, 52, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:09:10,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 02:09:10,997 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:09:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:09:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1008531911, now seen corresponding path program 52 times [2022-02-15 02:09:10,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:09:10,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331529499] [2022-02-15 02:09:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:09:11,056 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:09:11,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:09:11,128 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:09:11,170 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:09:11,218 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:09:11,218 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:09:11,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:09:11,221 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_208.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_208.0)) 4294967296)) 10000000) 0) [2022-02-15 02:09:11,221 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_208.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_208.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:09:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:09:11,227 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_208.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_208.1)) 4294967296)) 10000000) 0) [2022-02-15 02:09:11,228 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_208.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_208.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:09:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:09:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:09:11,324 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 02:09:32,251 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:09:32,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331529499] [2022-02-15 02:09:32,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [331529499] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:09:32,251 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:09:32,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 02:09:32,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029442885] [2022-02-15 02:09:32,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:09:32,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 02:09:32,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:09:32,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 02:09:32,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3550, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:09:32,252 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:09:55,778 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2022-02-15 02:09:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 02:09:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2022-02-15 02:09:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:09:55,779 INFO L225 Difference]: With dead ends: 130 [2022-02-15 02:09:55,779 INFO L226 Difference]: Without dead ends: 123 [2022-02-15 02:09:55,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 4 SyntacticMatches, 56 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=614, Invalid=12958, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:09:55,780 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6138 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 6254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 6138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:09:55,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 168 Invalid, 6254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 6138 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-02-15 02:09:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-02-15 02:09:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-02-15 02:09:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2022-02-15 02:09:55,796 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 119 [2022-02-15 02:09:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:09:55,796 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2022-02-15 02:09:55,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:09:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2022-02-15 02:09:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 02:09:55,796 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:09:55,797 INFO L514 BasicCegarLoop]: trace histogram [55, 53, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:09:55,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 02:09:55,797 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:09:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:09:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1699875284, now seen corresponding path program 53 times [2022-02-15 02:09:55,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:09:55,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155979947] [2022-02-15 02:09:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:09:55,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:09:55,905 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:09:55,906 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:09:55,947 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 02:09:55,988 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:09:55,989 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:09:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:09:55,991 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_212.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_212.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:09:55,992 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_212.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_212.0)) 4294967296)) 10000000) 0) [2022-02-15 02:09:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:09:55,997 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_212.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_212.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:09:55,997 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_212.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_212.1)) 4294967296)) 10000000) 0) [2022-02-15 02:09:56,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:09:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:09:56,092 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 02:10:13,771 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:10:13,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155979947] [2022-02-15 02:10:13,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [155979947] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:10:13,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:10:13,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 02:10:13,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789488334] [2022-02-15 02:10:13,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:10:13,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 02:10:13,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:10:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 02:10:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3670, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:10:13,772 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 61 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:10:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:10:34,156 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2022-02-15 02:10:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 02:10:34,157 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2022-02-15 02:10:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:10:34,157 INFO L225 Difference]: With dead ends: 132 [2022-02-15 02:10:34,157 INFO L226 Difference]: Without dead ends: 125 [2022-02-15 02:10:34,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 4 SyntacticMatches, 57 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=625, Invalid=13417, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:10:34,158 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 119 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6157 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 6275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 6157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:10:34,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 43 Invalid, 6275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 6157 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-02-15 02:10:34,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-15 02:10:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-02-15 02:10:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 120 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:10:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2022-02-15 02:10:34,185 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 121 [2022-02-15 02:10:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:10:34,185 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2022-02-15 02:10:34,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:10:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2022-02-15 02:10:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:10:34,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:10:34,186 INFO L514 BasicCegarLoop]: trace histogram [56, 54, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:10:34,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 02:10:34,186 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:10:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:10:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1729008303, now seen corresponding path program 54 times [2022-02-15 02:10:34,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:10:34,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984825520] [2022-02-15 02:10:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:10:34,279 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:10:34,332 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 02:10:34,332 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:10:34,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:10:34,422 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:10:34,422 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:10:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:10:34,424 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_216.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_216.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:10:34,425 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_216.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_216.0)) 4294967296)) 10000000) 0) [2022-02-15 02:10:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:10:34,430 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_216.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_216.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:10:34,431 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_216.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_216.1)) 4294967296)) 10000000) 0) [2022-02-15 02:10:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:10:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:10:34,510 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 02:10:56,767 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:10:56,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984825520] [2022-02-15 02:10:56,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984825520] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:10:56,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:10:56,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 02:10:56,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564079829] [2022-02-15 02:10:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:10:56,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 02:10:56,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:10:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 02:10:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3792, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:10:56,768 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 62 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:11:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:11:21,147 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2022-02-15 02:11:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 02:11:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2022-02-15 02:11:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:11:21,148 INFO L225 Difference]: With dead ends: 134 [2022-02-15 02:11:21,148 INFO L226 Difference]: Without dead ends: 127 [2022-02-15 02:11:21,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 4 SyntacticMatches, 58 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=636, Invalid=13884, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:11:21,149 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 121 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 6732 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 6852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 6732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:11:21,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 263 Invalid, 6852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 6732 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-02-15 02:11:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-15 02:11:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-02-15 02:11:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:11:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2022-02-15 02:11:21,165 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 123 [2022-02-15 02:11:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:11:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2022-02-15 02:11:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:11:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2022-02-15 02:11:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-15 02:11:21,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:11:21,165 INFO L514 BasicCegarLoop]: trace histogram [57, 55, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:11:21,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 02:11:21,165 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:11:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:11:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash -338931510, now seen corresponding path program 55 times [2022-02-15 02:11:21,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:11:21,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323828006] [2022-02-15 02:11:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:11:21,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:11:21,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:11:21,371 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:11:21,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:11:21,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:11:21,457 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 02:11:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:11:21,466 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_220.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_220.0)) 4294967296)) 10000000) 0) [2022-02-15 02:11:21,466 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_220.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_220.0)) 4294967296)) 100000000) 0)) [2022-02-15 02:11:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:11:21,471 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_220.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_220.1)) 4294967296)) 10000000) 0) [2022-02-15 02:11:21,472 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_220.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_220.1)) 4294967296)) 100000000) 0)) [2022-02-15 02:11:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:11:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:11:21,558 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 02:11:44,746 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:11:44,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323828006] [2022-02-15 02:11:44,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [323828006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:11:44,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:11:44,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 02:11:44,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961014257] [2022-02-15 02:11:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:11:44,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 02:11:44,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:11:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 02:11:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3916, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:11:44,747 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand has 63 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 61 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)