/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/in-de62.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:51:17,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:51:17,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:51:17,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:51:17,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:51:17,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:51:17,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:51:17,511 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 01:51:17,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:51:17,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:51:17,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:51:17,522 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:51:17,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:51:17,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:51:17,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:51:17,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:51:17,524 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:51:17,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:51:17,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:51:17,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:51:17,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:51:17,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:51:17,724 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:51:17,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-02-15 01:51:17,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9a9c2c0/ed8660d2fd124ef08783c8bba6f39911/FLAG38941edcc [2022-02-15 01:51:18,120 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:51:18,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-02-15 01:51:18,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9a9c2c0/ed8660d2fd124ef08783c8bba6f39911/FLAG38941edcc [2022-02-15 01:51:18,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9a9c2c0/ed8660d2fd124ef08783c8bba6f39911 [2022-02-15 01:51:18,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:51:18,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:51:18,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:51:18,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:51:18,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:51:18,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76feacf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18, skipping insertion in model container [2022-02-15 01:51:18,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:51:18,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:51:18,298 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/in-de62.c[368,381] [2022-02-15 01:51:18,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:51:18,320 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:51:18,328 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/in-de62.c[368,381] [2022-02-15 01:51:18,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:51:18,347 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:51:18,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18 WrapperNode [2022-02-15 01:51:18,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:51:18,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:51:18,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:51:18,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:51:18,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:51:18,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:51:18,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:51:18,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:51:18,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (1/1) ... [2022-02-15 01:51:18,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:51:18,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:51:18,412 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 01:51:18,414 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 01:51:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:51:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:51:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:51:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:51:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:51:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:51:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:51:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:51:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:51:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:51:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:51:18,495 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:51:18,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:51:18,606 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:51:18,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:51:18,626 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-02-15 01:51:18,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:51:18 BoogieIcfgContainer [2022-02-15 01:51:18,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:51:18,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:51:18,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:51:18,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:51:18,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:51:18" (1/3) ... [2022-02-15 01:51:18,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d35ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:51:18, skipping insertion in model container [2022-02-15 01:51:18,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:51:18" (2/3) ... [2022-02-15 01:51:18,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d35ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:51:18, skipping insertion in model container [2022-02-15 01:51:18,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:51:18" (3/3) ... [2022-02-15 01:51:18,644 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de62.c [2022-02-15 01:51:18,648 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:51:18,648 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:51:18,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:51:18,697 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 01:51:18,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:51:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 01:51:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:51:18,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:18,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:18,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1370249117, now seen corresponding path program 1 times [2022-02-15 01:51:18,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:18,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700556555] [2022-02-15 01:51:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:18,778 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:51:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:18,900 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 01:51:18,901 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:18,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700556555] [2022-02-15 01:51:18,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700556555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:18,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:18,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 01:51:18,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569849601] [2022-02-15 01:51:18,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:18,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 01:51:18,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 01:51:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:51:18,929 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 01:51:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:18,975 INFO L93 Difference]: Finished difference Result 43 states and 66 transitions. [2022-02-15 01:51:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 01:51:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2022-02-15 01:51:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:18,980 INFO L225 Difference]: With dead ends: 43 [2022-02-15 01:51:18,981 INFO L226 Difference]: Without dead ends: 18 [2022-02-15 01:51:18,983 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 01:51:18,986 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 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 01:51:18,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-15 01:51:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-15 01:51:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 01:51:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-02-15 01:51:19,015 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 17 [2022-02-15 01:51:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:19,016 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-02-15 01:51:19,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 01:51:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-15 01:51:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:51:19,017 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:19,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:19,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:51:19,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2115201689, now seen corresponding path program 1 times [2022-02-15 01:51:19,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:19,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127420752] [2022-02-15 01:51:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:19,023 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:51:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:19,125 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:19,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127420752] [2022-02-15 01:51:19,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [127420752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:19,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:19,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:19,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75667600] [2022-02-15 01:51:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:19,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:19,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:19,128 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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 01:51:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:19,235 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-02-15 01:51:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:51:19,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2022-02-15 01:51:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:19,237 INFO L225 Difference]: With dead ends: 34 [2022-02-15 01:51:19,237 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 01:51:19,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:19,239 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:19,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 01:51:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-15 01:51:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 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 01:51:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-02-15 01:51:19,244 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 17 [2022-02-15 01:51:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:19,244 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-02-15 01:51:19,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 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 01:51:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-02-15 01:51:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 01:51:19,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:19,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:19,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:51:19,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1181238037, now seen corresponding path program 1 times [2022-02-15 01:51:19,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:19,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286856438] [2022-02-15 01:51:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:19,589 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:19,603 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:19,639 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:19,663 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.1))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:19,728 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 01:51:19,829 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:19,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286856438] [2022-02-15 01:51:19,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1286856438] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:19,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:19,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 01:51:19,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375464015] [2022-02-15 01:51:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:19,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 01:51:19,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 01:51:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:51:19,832 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 01:51:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:19,923 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-02-15 01:51:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:51:19,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 18 [2022-02-15 01:51:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:19,924 INFO L225 Difference]: With dead ends: 31 [2022-02-15 01:51:19,924 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 01:51:19,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:19,925 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:19,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 01:51:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-15 01:51:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 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 01:51:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-02-15 01:51:19,930 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 18 [2022-02-15 01:51:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-02-15 01:51:19,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 01:51:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-02-15 01:51:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 01:51:19,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:19,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:19,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:51:19,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1710900860, now seen corresponding path program 1 times [2022-02-15 01:51:19,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:19,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753552278] [2022-02-15 01:51:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:19,967 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:19,968 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:19,974 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.0))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:19,987 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.1))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,041 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 01:51:20,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:20,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753552278] [2022-02-15 01:51:20,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1753552278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:20,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:20,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 01:51:20,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850597841] [2022-02-15 01:51:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:20,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 01:51:20,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 01:51:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:51:20,112 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 01:51:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:20,182 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-02-15 01:51:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:51:20,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 18 [2022-02-15 01:51:20,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:20,183 INFO L225 Difference]: With dead ends: 34 [2022-02-15 01:51:20,183 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 01:51:20,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:20,184 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:20,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 01:51:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-15 01:51:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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 01:51:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-02-15 01:51:20,189 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 18 [2022-02-15 01:51:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:20,189 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-02-15 01:51:20,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 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 01:51:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-02-15 01:51:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 01:51:20,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:20,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:20,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 01:51:20,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1066409433, now seen corresponding path program 1 times [2022-02-15 01:51:20,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:20,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470650781] [2022-02-15 01:51:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:20,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:20,246 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:20,251 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,264 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,300 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 01:51:20,313 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:20,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470650781] [2022-02-15 01:51:20,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [470650781] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:20,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:20,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:20,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924546118] [2022-02-15 01:51:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:20,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:20,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:20,316 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 01:51:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:20,369 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-02-15 01:51:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:51:20,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 01:51:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:20,372 INFO L225 Difference]: With dead ends: 44 [2022-02-15 01:51:20,373 INFO L226 Difference]: Without dead ends: 26 [2022-02-15 01:51:20,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:20,380 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:20,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 32 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-15 01:51:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-15 01:51:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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 01:51:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-02-15 01:51:20,387 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 19 [2022-02-15 01:51:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:20,388 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-02-15 01:51:20,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 01:51:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-02-15 01:51:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:51:20,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:20,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:20,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 01:51:20,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1300031754, now seen corresponding path program 1 times [2022-02-15 01:51:20,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:20,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109560281] [2022-02-15 01:51:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:20,431 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:20,431 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:20,443 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,466 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_4.1))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,504 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 01:51:20,522 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:20,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109560281] [2022-02-15 01:51:20,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [109560281] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:20,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:20,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:20,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659667827] [2022-02-15 01:51:20,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:20,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:20,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:20,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:20,523 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 01:51:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:20,580 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-02-15 01:51:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:51:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 20 [2022-02-15 01:51:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:20,581 INFO L225 Difference]: With dead ends: 34 [2022-02-15 01:51:20,581 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 01:51:20,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:20,582 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:20,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 01:51:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-02-15 01:51:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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 01:51:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-02-15 01:51:20,585 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 20 [2022-02-15 01:51:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:20,585 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-02-15 01:51:20,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 01:51:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-02-15 01:51:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:51:20,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:20,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:20,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 01:51:20,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash 552879990, now seen corresponding path program 1 times [2022-02-15 01:51:20,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:20,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131450823] [2022-02-15 01:51:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:20,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:20,621 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:20,626 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_5.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,631 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_5.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,646 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 01:51:20,665 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:20,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131450823] [2022-02-15 01:51:20,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131450823] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:20,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:20,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:51:20,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697149455] [2022-02-15 01:51:20,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:20,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:51:20,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:51:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:51:20,666 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 01:51:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:20,745 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-02-15 01:51:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:51:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 20 [2022-02-15 01:51:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:20,746 INFO L225 Difference]: With dead ends: 33 [2022-02-15 01:51:20,746 INFO L226 Difference]: Without dead ends: 26 [2022-02-15 01:51:20,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:20,747 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:20,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-15 01:51:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-15 01:51:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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 01:51:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-02-15 01:51:20,751 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 20 [2022-02-15 01:51:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-02-15 01:51:20,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 01:51:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-02-15 01:51:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:51:20,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:20,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:20,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 01:51:20,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1955708389, now seen corresponding path program 1 times [2022-02-15 01:51:20,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:20,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224817278] [2022-02-15 01:51:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:20,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:20,802 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:20,806 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_6.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,810 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_6.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:20,835 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 01:51:20,856 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:20,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224817278] [2022-02-15 01:51:20,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224817278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:20,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:20,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:51:20,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149958159] [2022-02-15 01:51:20,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:20,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:51:20,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:51:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:51:20,860 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 01:51:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:20,924 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2022-02-15 01:51:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:51:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 20 [2022-02-15 01:51:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:20,925 INFO L225 Difference]: With dead ends: 40 [2022-02-15 01:51:20,925 INFO L226 Difference]: Without dead ends: 30 [2022-02-15 01:51:20,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:20,926 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:20,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-15 01:51:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-02-15 01:51:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.44) internal successors, (36), 25 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 01:51:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2022-02-15 01:51:20,935 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 20 [2022-02-15 01:51:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:20,937 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2022-02-15 01:51:20,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 01:51:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2022-02-15 01:51:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:51:20,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:20,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:20,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 01:51:20,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:20,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 30273528, now seen corresponding path program 1 times [2022-02-15 01:51:20,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:20,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34258799] [2022-02-15 01:51:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:20,975 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:20,979 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:20,986 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_7.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,010 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_7.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:21,048 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:21,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34258799] [2022-02-15 01:51:21,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [34258799] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:21,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:21,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:21,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707042986] [2022-02-15 01:51:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:21,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:21,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:21,049 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:21,123 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-02-15 01:51:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:51:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:21,126 INFO L225 Difference]: With dead ends: 37 [2022-02-15 01:51:21,127 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 01:51:21,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:21,128 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:21,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 01:51:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-15 01:51:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 01:51:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-02-15 01:51:21,138 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 21 [2022-02-15 01:51:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:21,138 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-02-15 01:51:21,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-02-15 01:51:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:51:21,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:21,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:21,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 01:51:21,139 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1232820840, now seen corresponding path program 1 times [2022-02-15 01:51:21,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:21,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751168848] [2022-02-15 01:51:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:21,172 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:21,172 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:21,177 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_8.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,204 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_8.1))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,232 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 01:51:21,242 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:21,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751168848] [2022-02-15 01:51:21,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1751168848] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:21,242 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:21,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:21,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347033505] [2022-02-15 01:51:21,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:21,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:21,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:21,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:21,243 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:21,348 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2022-02-15 01:51:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 01:51:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:21,350 INFO L225 Difference]: With dead ends: 55 [2022-02-15 01:51:21,350 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 01:51:21,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:21,351 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:21,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 37 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 01:51:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2022-02-15 01:51:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 01:51:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2022-02-15 01:51:21,358 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 21 [2022-02-15 01:51:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2022-02-15 01:51:21,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 01:51:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2022-02-15 01:51:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 01:51:21,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:21,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:21,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 01:51:21,359 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -29884763, now seen corresponding path program 1 times [2022-02-15 01:51:21,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:21,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69016901] [2022-02-15 01:51:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:21,389 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:21,390 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:21,393 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_9.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,405 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_9.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:21,444 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:21,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69016901] [2022-02-15 01:51:21,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [69016901] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:21,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:21,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:21,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082274393] [2022-02-15 01:51:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:21,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:21,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:21,445 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 01:51:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:21,540 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2022-02-15 01:51:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:51:21,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 22 [2022-02-15 01:51:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:21,541 INFO L225 Difference]: With dead ends: 46 [2022-02-15 01:51:21,541 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 01:51:21,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:21,542 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:21,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 34 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 01:51:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-02-15 01:51:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 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 01:51:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2022-02-15 01:51:21,554 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 22 [2022-02-15 01:51:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:21,554 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2022-02-15 01:51:21,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 01:51:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2022-02-15 01:51:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 01:51:21,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:21,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:21,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 01:51:21,557 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1372943636, now seen corresponding path program 1 times [2022-02-15 01:51:21,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:21,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945352734] [2022-02-15 01:51:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:21,591 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:21,592 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:21,599 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_10.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,623 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_10.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:21,713 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 01:51:22,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:22,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945352734] [2022-02-15 01:51:22,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [945352734] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:22,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:22,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:51:22,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832754655] [2022-02-15 01:51:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:22,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:51:22,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:51:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:22,149 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 01:51:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:22,296 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-02-15 01:51:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:51:22,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 22 [2022-02-15 01:51:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:22,297 INFO L225 Difference]: With dead ends: 51 [2022-02-15 01:51:22,297 INFO L226 Difference]: Without dead ends: 46 [2022-02-15 01:51:22,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:51:22,298 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:22,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 40 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-02-15 01:51:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-15 01:51:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-02-15 01:51:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 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 01:51:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2022-02-15 01:51:22,307 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 22 [2022-02-15 01:51:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:22,307 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2022-02-15 01:51:22,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 01:51:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2022-02-15 01:51:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:51:22,308 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:22,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:22,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 01:51:22,308 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:22,309 INFO L85 PathProgramCache]: Analyzing trace with hash -353925126, now seen corresponding path program 1 times [2022-02-15 01:51:22,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:22,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869116990] [2022-02-15 01:51:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:22,549 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:22,550 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:22,553 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_11.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:22,562 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_11.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:22,605 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 01:51:22,620 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:22,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869116990] [2022-02-15 01:51:22,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1869116990] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:22,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:22,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:51:22,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722776653] [2022-02-15 01:51:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:22,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:51:22,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:51:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:22,621 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 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 01:51:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:22,764 INFO L93 Difference]: Finished difference Result 81 states and 117 transitions. [2022-02-15 01:51:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:51:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 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 01:51:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:22,765 INFO L225 Difference]: With dead ends: 81 [2022-02-15 01:51:22,765 INFO L226 Difference]: Without dead ends: 66 [2022-02-15 01:51:22,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:51:22,765 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:22,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 41 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-15 01:51:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2022-02-15 01:51:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.510204081632653) internal successors, (74), 49 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 01:51:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 78 transitions. [2022-02-15 01:51:22,778 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 78 transitions. Word has length 23 [2022-02-15 01:51:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:22,778 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 78 transitions. [2022-02-15 01:51:22,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 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 01:51:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 78 transitions. [2022-02-15 01:51:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:51:22,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:22,778 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:22,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 01:51:22,779 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1894791784, now seen corresponding path program 2 times [2022-02-15 01:51:22,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:22,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788947834] [2022-02-15 01:51:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:22,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:22,812 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:22,815 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_12.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:22,827 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_12.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:22,922 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 01:51:23,207 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:23,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788947834] [2022-02-15 01:51:23,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1788947834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:23,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:23,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:23,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189168628] [2022-02-15 01:51:23,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:23,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:23,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:51:23,209 INFO L87 Difference]: Start difference. First operand 54 states and 78 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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 01:51:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:32,672 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2022-02-15 01:51:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:51:32,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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 01:51:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:32,673 INFO L225 Difference]: With dead ends: 94 [2022-02-15 01:51:32,673 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 01:51:32,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=101, Invalid=277, Unknown=2, NotChecked=0, Total=380 [2022-02-15 01:51:32,674 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:32,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 54 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-02-15 01:51:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 01:51:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2022-02-15 01:51:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 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 01:51:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 86 transitions. [2022-02-15 01:51:32,688 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 86 transitions. Word has length 23 [2022-02-15 01:51:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:32,688 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 86 transitions. [2022-02-15 01:51:32,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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 01:51:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 86 transitions. [2022-02-15 01:51:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:51:32,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:32,689 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:32,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 01:51:32,689 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1015896408, now seen corresponding path program 2 times [2022-02-15 01:51:32,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:32,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125710459] [2022-02-15 01:51:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:32,732 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:32,733 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:32,736 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_13.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:32,751 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_13.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:32,791 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 01:51:32,808 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:32,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125710459] [2022-02-15 01:51:32,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [125710459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:32,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:32,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:51:32,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752307365] [2022-02-15 01:51:32,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:51:32,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:51:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:32,809 INFO L87 Difference]: Start difference. First operand 61 states and 86 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 01:51:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:33,033 INFO L93 Difference]: Finished difference Result 136 states and 202 transitions. [2022-02-15 01:51:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:51:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 01:51:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:33,034 INFO L225 Difference]: With dead ends: 136 [2022-02-15 01:51:33,034 INFO L226 Difference]: Without dead ends: 114 [2022-02-15 01:51:33,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:51:33,034 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 74 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:33,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 46 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-15 01:51:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 76. [2022-02-15 01:51:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 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 01:51:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2022-02-15 01:51:33,054 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 23 [2022-02-15 01:51:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:33,054 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2022-02-15 01:51:33,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 01:51:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2022-02-15 01:51:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 01:51:33,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:33,057 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:33,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 01:51:33,058 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1809241787, now seen corresponding path program 2 times [2022-02-15 01:51:33,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:33,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975230717] [2022-02-15 01:51:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:33,096 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:33,096 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:33,102 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_14.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,122 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_14.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:33,161 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:33,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975230717] [2022-02-15 01:51:33,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [975230717] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:33,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:33,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:51:33,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66988860] [2022-02-15 01:51:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:33,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:51:33,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:33,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:51:33,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:51:33,162 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 01:51:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:33,266 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2022-02-15 01:51:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:51:33,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 24 [2022-02-15 01:51:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:33,267 INFO L225 Difference]: With dead ends: 93 [2022-02-15 01:51:33,267 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 01:51:33,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:33,267 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:33,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 35 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:51:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 01:51:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-02-15 01:51:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 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 01:51:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2022-02-15 01:51:33,285 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 24 [2022-02-15 01:51:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:33,285 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2022-02-15 01:51:33,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 01:51:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2022-02-15 01:51:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 01:51:33,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:33,286 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:33,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 01:51:33,286 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1372842806, now seen corresponding path program 2 times [2022-02-15 01:51:33,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:33,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571023558] [2022-02-15 01:51:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:33,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:33,318 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:33,321 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_15.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,328 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_15.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,368 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 01:51:33,385 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:33,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571023558] [2022-02-15 01:51:33,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [571023558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:33,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:33,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:51:33,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943184281] [2022-02-15 01:51:33,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:33,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:51:33,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:33,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:51:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:33,386 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 01:51:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:33,534 INFO L93 Difference]: Finished difference Result 86 states and 115 transitions. [2022-02-15 01:51:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:51:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 24 [2022-02-15 01:51:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:33,535 INFO L225 Difference]: With dead ends: 86 [2022-02-15 01:51:33,535 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 01:51:33,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:51:33,535 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:33,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 01:51:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-02-15 01:51:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 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 01:51:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2022-02-15 01:51:33,546 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 24 [2022-02-15 01:51:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:33,546 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2022-02-15 01:51:33,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 01:51:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2022-02-15 01:51:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 01:51:33,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:33,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:33,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 01:51:33,547 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 801149717, now seen corresponding path program 3 times [2022-02-15 01:51:33,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:33,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968929937] [2022-02-15 01:51:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:33,583 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:33,584 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:33,588 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_16.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,602 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_16.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,639 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 01:51:33,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:33,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968929937] [2022-02-15 01:51:33,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1968929937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:33,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:33,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:51:33,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530922453] [2022-02-15 01:51:33,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:33,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:51:33,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:51:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:33,674 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 01:51:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:33,884 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2022-02-15 01:51:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:51:33,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 26 [2022-02-15 01:51:33,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:33,885 INFO L225 Difference]: With dead ends: 81 [2022-02-15 01:51:33,885 INFO L226 Difference]: Without dead ends: 71 [2022-02-15 01:51:33,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:51:33,886 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:33,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 45 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-15 01:51:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2022-02-15 01:51:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 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 01:51:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2022-02-15 01:51:33,900 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 26 [2022-02-15 01:51:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:33,901 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2022-02-15 01:51:33,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 01:51:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2022-02-15 01:51:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:51:33,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:33,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 01:51:33,901 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1041168377, now seen corresponding path program 3 times [2022-02-15 01:51:33,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:33,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193501276] [2022-02-15 01:51:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:33,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:33,947 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:33,950 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_17.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,958 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_17.2))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:51:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:33,992 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 01:51:34,016 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:34,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193501276] [2022-02-15 01:51:34,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193501276] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:34,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:34,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:51:34,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062801347] [2022-02-15 01:51:34,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:34,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:51:34,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:51:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:34,017 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 01:51:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:34,255 INFO L93 Difference]: Finished difference Result 96 states and 132 transitions. [2022-02-15 01:51:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:51:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 01:51:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:34,256 INFO L225 Difference]: With dead ends: 96 [2022-02-15 01:51:34,256 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 01:51:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:51:34,257 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:34,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 41 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 01:51:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-02-15 01:51:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 67 states have internal predecessors, (97), 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 01:51:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2022-02-15 01:51:34,272 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 27 [2022-02-15 01:51:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:34,272 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2022-02-15 01:51:34,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 01:51:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2022-02-15 01:51:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:51:34,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:34,273 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:34,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 01:51:34,273 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1280397098, now seen corresponding path program 4 times [2022-02-15 01:51:34,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:34,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133206009] [2022-02-15 01:51:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:34,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:34,313 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:34,316 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_18.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:34,325 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_18.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:34,396 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:34,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133206009] [2022-02-15 01:51:34,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [133206009] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:34,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:34,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:34,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921497370] [2022-02-15 01:51:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:34,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:34,398 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:34,764 INFO L93 Difference]: Finished difference Result 126 states and 184 transitions. [2022-02-15 01:51:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:51:34,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:34,765 INFO L225 Difference]: With dead ends: 126 [2022-02-15 01:51:34,765 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 01:51:34,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:51:34,766 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 74 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:34,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 48 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 01:51:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2022-02-15 01:51:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 90 states have internal predecessors, (130), 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 01:51:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2022-02-15 01:51:34,786 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 27 [2022-02-15 01:51:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:34,786 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2022-02-15 01:51:34,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2022-02-15 01:51:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 01:51:34,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:34,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:34,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 01:51:34,787 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2049023563, now seen corresponding path program 3 times [2022-02-15 01:51:34,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:34,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119959769] [2022-02-15 01:51:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:34,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:34,826 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:34,829 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_19.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:34,840 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_19.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:34,875 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 01:51:34,896 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:34,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119959769] [2022-02-15 01:51:34,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1119959769] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:34,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:34,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:51:34,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834274625] [2022-02-15 01:51:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:34,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:51:34,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:51:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:51:34,898 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 01:51:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:35,192 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2022-02-15 01:51:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:51:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 28 [2022-02-15 01:51:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:35,193 INFO L225 Difference]: With dead ends: 125 [2022-02-15 01:51:35,193 INFO L226 Difference]: Without dead ends: 120 [2022-02-15 01:51:35,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:51:35,193 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:35,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 47 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:51:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-15 01:51:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2022-02-15 01:51:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 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 01:51:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-02-15 01:51:35,223 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 28 [2022-02-15 01:51:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:35,223 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-02-15 01:51:35,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 01:51:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-02-15 01:51:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 01:51:35,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:35,223 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:35,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 01:51:35,223 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash 836656981, now seen corresponding path program 4 times [2022-02-15 01:51:35,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:35,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841606752] [2022-02-15 01:51:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:35,251 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:35,251 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:35,254 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_20.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:35,262 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_20.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:35,303 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 01:51:35,337 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:35,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841606752] [2022-02-15 01:51:35,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841606752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:35,337 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:35,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:35,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793930605] [2022-02-15 01:51:35,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:35,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:35,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:35,338 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:35,686 INFO L93 Difference]: Finished difference Result 240 states and 352 transitions. [2022-02-15 01:51:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:51:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 28 [2022-02-15 01:51:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:35,688 INFO L225 Difference]: With dead ends: 240 [2022-02-15 01:51:35,689 INFO L226 Difference]: Without dead ends: 202 [2022-02-15 01:51:35,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:51:35,689 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:35,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 48 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-02-15 01:51:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 113. [2022-02-15 01:51:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 108 states have internal predecessors, (152), 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 01:51:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2022-02-15 01:51:35,726 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 28 [2022-02-15 01:51:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:35,726 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2022-02-15 01:51:35,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2022-02-15 01:51:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:51:35,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:35,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:35,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 01:51:35,727 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 939274105, now seen corresponding path program 5 times [2022-02-15 01:51:35,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:35,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142236512] [2022-02-15 01:51:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:35,761 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:35,762 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:35,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:35,765 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_21.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:35,775 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_21.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:35,827 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 01:51:35,857 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:35,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142236512] [2022-02-15 01:51:35,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [142236512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:35,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:35,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:35,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275390367] [2022-02-15 01:51:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:35,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:35,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:35,859 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 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 01:51:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:36,132 INFO L93 Difference]: Finished difference Result 169 states and 238 transitions. [2022-02-15 01:51:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:51:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 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 01:51:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:36,133 INFO L225 Difference]: With dead ends: 169 [2022-02-15 01:51:36,133 INFO L226 Difference]: Without dead ends: 164 [2022-02-15 01:51:36,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:51:36,134 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:36,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 54 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-15 01:51:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 119. [2022-02-15 01:51:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 114 states have internal predecessors, (163), 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 01:51:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2022-02-15 01:51:36,164 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 29 [2022-02-15 01:51:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:36,164 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2022-02-15 01:51:36,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 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 01:51:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2022-02-15 01:51:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:51:36,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:36,165 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:36,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 01:51:36,165 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1591798503, now seen corresponding path program 6 times [2022-02-15 01:51:36,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:36,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395023864] [2022-02-15 01:51:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:36,195 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:36,195 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:36,199 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_22.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:36,216 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_22.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:36,276 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 01:51:36,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:36,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395023864] [2022-02-15 01:51:36,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395023864] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:36,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:36,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:51:36,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117918016] [2022-02-15 01:51:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:36,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:51:36,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:51:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:36,308 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:36,635 INFO L93 Difference]: Finished difference Result 141 states and 195 transitions. [2022-02-15 01:51:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:51:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 29 [2022-02-15 01:51:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:36,636 INFO L225 Difference]: With dead ends: 141 [2022-02-15 01:51:36,636 INFO L226 Difference]: Without dead ends: 118 [2022-02-15 01:51:36,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:51:36,637 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:36,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 64 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-15 01:51:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2022-02-15 01:51:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 105 states have internal predecessors, (150), 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 01:51:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 154 transitions. [2022-02-15 01:51:36,665 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 154 transitions. Word has length 29 [2022-02-15 01:51:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:36,665 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 154 transitions. [2022-02-15 01:51:36,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 154 transitions. [2022-02-15 01:51:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:51:36,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:36,666 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:36,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 01:51:36,666 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1563256359, now seen corresponding path program 4 times [2022-02-15 01:51:36,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:36,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074413470] [2022-02-15 01:51:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:36,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:36,692 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:36,695 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_23.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:36,704 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_23.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:36,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:36,736 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 01:51:36,759 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:36,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074413470] [2022-02-15 01:51:36,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2074413470] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:36,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:36,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:51:36,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248587152] [2022-02-15 01:51:36,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:36,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:51:36,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:51:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:51:36,760 INFO L87 Difference]: Start difference. First operand 110 states and 154 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 01:51:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:37,160 INFO L93 Difference]: Finished difference Result 229 states and 333 transitions. [2022-02-15 01:51:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:51:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 29 [2022-02-15 01:51:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:37,162 INFO L225 Difference]: With dead ends: 229 [2022-02-15 01:51:37,162 INFO L226 Difference]: Without dead ends: 157 [2022-02-15 01:51:37,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:51:37,163 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:37,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 51 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-02-15 01:51:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 132. [2022-02-15 01:51:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.4330708661417322) internal successors, (182), 127 states have internal predecessors, (182), 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 01:51:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 186 transitions. [2022-02-15 01:51:37,198 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 186 transitions. Word has length 29 [2022-02-15 01:51:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:37,198 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 186 transitions. [2022-02-15 01:51:37,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 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 01:51:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 186 transitions. [2022-02-15 01:51:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:51:37,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:37,199 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:37,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 01:51:37,199 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1709448743, now seen corresponding path program 7 times [2022-02-15 01:51:37,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:37,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821474063] [2022-02-15 01:51:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:37,223 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:37,223 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:37,226 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_24.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:37,234 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_24.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:37,316 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:37,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821474063] [2022-02-15 01:51:37,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [821474063] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:37,317 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:37,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:51:37,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140434466] [2022-02-15 01:51:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:37,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:51:37,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:51:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:37,317 INFO L87 Difference]: Start difference. First operand 132 states and 186 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:37,764 INFO L93 Difference]: Finished difference Result 314 states and 456 transitions. [2022-02-15 01:51:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:51:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 29 [2022-02-15 01:51:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:37,765 INFO L225 Difference]: With dead ends: 314 [2022-02-15 01:51:37,765 INFO L226 Difference]: Without dead ends: 264 [2022-02-15 01:51:37,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:51:37,766 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 119 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:37,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 46 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-15 01:51:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 158. [2022-02-15 01:51:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.3986928104575163) internal successors, (214), 153 states have internal predecessors, (214), 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 01:51:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 218 transitions. [2022-02-15 01:51:37,815 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 218 transitions. Word has length 29 [2022-02-15 01:51:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:37,815 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 218 transitions. [2022-02-15 01:51:37,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 218 transitions. [2022-02-15 01:51:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 01:51:37,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:37,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:37,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 01:51:37,816 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1181811755, now seen corresponding path program 8 times [2022-02-15 01:51:37,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:37,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341081842] [2022-02-15 01:51:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:37,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:37,841 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:37,844 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_25.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:37,867 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_25.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:37,912 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 01:51:37,935 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:37,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341081842] [2022-02-15 01:51:37,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1341081842] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:37,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:37,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:37,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878716838] [2022-02-15 01:51:37,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:37,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:37,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:37,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:37,938 INFO L87 Difference]: Start difference. First operand 158 states and 218 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:38,427 INFO L93 Difference]: Finished difference Result 331 states and 467 transitions. [2022-02-15 01:51:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:51:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 30 [2022-02-15 01:51:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:38,428 INFO L225 Difference]: With dead ends: 331 [2022-02-15 01:51:38,428 INFO L226 Difference]: Without dead ends: 231 [2022-02-15 01:51:38,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:51:38,429 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:38,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 60 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-02-15 01:51:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 194. [2022-02-15 01:51:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.380952380952381) internal successors, (261), 189 states have internal predecessors, (261), 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 01:51:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 265 transitions. [2022-02-15 01:51:38,493 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 265 transitions. Word has length 30 [2022-02-15 01:51:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:38,494 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 265 transitions. [2022-02-15 01:51:38,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 01:51:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 265 transitions. [2022-02-15 01:51:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 01:51:38,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:38,494 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:38,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 01:51:38,494 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash 965652437, now seen corresponding path program 9 times [2022-02-15 01:51:38,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:38,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304145379] [2022-02-15 01:51:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:38,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:38,524 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:38,527 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_26.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:38,535 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_26.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:38,596 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 01:51:38,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:38,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304145379] [2022-02-15 01:51:38,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1304145379] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:38,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:38,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:51:38,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958704795] [2022-02-15 01:51:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:38,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:51:38,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:51:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:51:38,633 INFO L87 Difference]: Start difference. First operand 194 states and 265 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 01:51:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:39,207 INFO L93 Difference]: Finished difference Result 432 states and 611 transitions. [2022-02-15 01:51:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:51:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 30 [2022-02-15 01:51:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:39,210 INFO L225 Difference]: With dead ends: 432 [2022-02-15 01:51:39,210 INFO L226 Difference]: Without dead ends: 376 [2022-02-15 01:51:39,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:51:39,211 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 105 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:39,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 77 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:51:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-02-15 01:51:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 228. [2022-02-15 01:51:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.3542600896860986) internal successors, (302), 223 states have internal predecessors, (302), 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 01:51:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 306 transitions. [2022-02-15 01:51:39,278 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 306 transitions. Word has length 30 [2022-02-15 01:51:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:39,278 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 306 transitions. [2022-02-15 01:51:39,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 01:51:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 306 transitions. [2022-02-15 01:51:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 01:51:39,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:39,278 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:39,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 01:51:39,279 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2005556903, now seen corresponding path program 10 times [2022-02-15 01:51:39,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:39,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631418373] [2022-02-15 01:51:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:39,305 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:39,306 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:39,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:39,309 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_27.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:39,336 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_27.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:39,410 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 01:51:39,444 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:39,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631418373] [2022-02-15 01:51:39,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [631418373] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:39,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:39,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:51:39,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786497096] [2022-02-15 01:51:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:39,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:51:39,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:51:39,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:51:39,445 INFO L87 Difference]: Start difference. First operand 228 states and 306 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 01:51:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:40,133 INFO L93 Difference]: Finished difference Result 482 states and 678 transitions. [2022-02-15 01:51:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 01:51:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 31 [2022-02-15 01:51:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:40,135 INFO L225 Difference]: With dead ends: 482 [2022-02-15 01:51:40,135 INFO L226 Difference]: Without dead ends: 426 [2022-02-15 01:51:40,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:51:40,136 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 135 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:40,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 73 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:51:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-02-15 01:51:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 247. [2022-02-15 01:51:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.3553719008264462) internal successors, (328), 242 states have internal predecessors, (328), 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 01:51:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2022-02-15 01:51:40,217 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 31 [2022-02-15 01:51:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:40,218 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2022-02-15 01:51:40,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 01:51:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2022-02-15 01:51:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 01:51:40,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:40,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:40,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 01:51:40,223 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:40,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash -745886635, now seen corresponding path program 11 times [2022-02-15 01:51:40,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:40,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319452419] [2022-02-15 01:51:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:40,289 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:40,289 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:40,293 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_28.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:40,304 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_28.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:40,384 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:40,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319452419] [2022-02-15 01:51:40,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1319452419] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:40,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:40,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:51:40,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257207598] [2022-02-15 01:51:40,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:40,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:51:40,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:51:40,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:51:40,385 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:40,821 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2022-02-15 01:51:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:51:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 32 [2022-02-15 01:51:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:40,822 INFO L225 Difference]: With dead ends: 280 [2022-02-15 01:51:40,822 INFO L226 Difference]: Without dead ends: 198 [2022-02-15 01:51:40,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:51:40,823 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:40,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 60 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-02-15 01:51:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2022-02-15 01:51:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 174 states have internal predecessors, (240), 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 01:51:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2022-02-15 01:51:40,890 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 32 [2022-02-15 01:51:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:40,890 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2022-02-15 01:51:40,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 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 01:51:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2022-02-15 01:51:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 01:51:40,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:40,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:40,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 01:51:40,891 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1004124090, now seen corresponding path program 12 times [2022-02-15 01:51:40,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:40,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544948530] [2022-02-15 01:51:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:40,917 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:40,917 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:40,920 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_29.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:40,931 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_29.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:40,987 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 01:51:41,031 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:41,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544948530] [2022-02-15 01:51:41,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544948530] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:41,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:41,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:51:41,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807528149] [2022-02-15 01:51:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:41,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:51:41,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:51:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:51:41,033 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 01:51:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:41,489 INFO L93 Difference]: Finished difference Result 263 states and 353 transitions. [2022-02-15 01:51:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:51:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 33 [2022-02-15 01:51:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:41,491 INFO L225 Difference]: With dead ends: 263 [2022-02-15 01:51:41,491 INFO L226 Difference]: Without dead ends: 248 [2022-02-15 01:51:41,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:51:41,491 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:41,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 41 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-15 01:51:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 215. [2022-02-15 01:51:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.3428571428571427) internal successors, (282), 210 states have internal predecessors, (282), 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 01:51:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 286 transitions. [2022-02-15 01:51:41,572 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 286 transitions. Word has length 33 [2022-02-15 01:51:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:41,572 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 286 transitions. [2022-02-15 01:51:41,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 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 01:51:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 286 transitions. [2022-02-15 01:51:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:51:41,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:41,573 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:41,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 01:51:41,573 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash 289270042, now seen corresponding path program 13 times [2022-02-15 01:51:41,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:41,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974711095] [2022-02-15 01:51:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:41,596 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:41,596 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:41,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:41,599 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_30.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:41,612 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_30.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:41,674 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 01:51:41,723 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:41,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974711095] [2022-02-15 01:51:41,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [974711095] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:41,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:41,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:51:41,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569911987] [2022-02-15 01:51:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:41,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:51:41,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:51:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:51:41,725 INFO L87 Difference]: Start difference. First operand 215 states and 286 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 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 01:51:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:42,194 INFO L93 Difference]: Finished difference Result 300 states and 407 transitions. [2022-02-15 01:51:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:51:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 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 35 [2022-02-15 01:51:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:42,196 INFO L225 Difference]: With dead ends: 300 [2022-02-15 01:51:42,196 INFO L226 Difference]: Without dead ends: 291 [2022-02-15 01:51:42,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:51:42,196 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:42,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-15 01:51:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 224. [2022-02-15 01:51:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.356164383561644) internal successors, (297), 219 states have internal predecessors, (297), 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 01:51:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 301 transitions. [2022-02-15 01:51:42,283 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 301 transitions. Word has length 35 [2022-02-15 01:51:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:42,283 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 301 transitions. [2022-02-15 01:51:42,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 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 01:51:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 301 transitions. [2022-02-15 01:51:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:51:42,284 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:42,284 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:42,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 01:51:42,284 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1894435528, now seen corresponding path program 14 times [2022-02-15 01:51:42,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:42,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947302248] [2022-02-15 01:51:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:42,338 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:42,338 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:42,341 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_31.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:42,355 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_31.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:42,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:42,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947302248] [2022-02-15 01:51:42,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1947302248] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:42,479 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:42,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:51:42,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064737447] [2022-02-15 01:51:42,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:42,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:51:42,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:51:42,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:51:42,480 INFO L87 Difference]: Start difference. First operand 224 states and 301 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 01:51:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:43,466 INFO L93 Difference]: Finished difference Result 284 states and 377 transitions. [2022-02-15 01:51:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:51:43,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 01:51:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:43,467 INFO L225 Difference]: With dead ends: 284 [2022-02-15 01:51:43,467 INFO L226 Difference]: Without dead ends: 196 [2022-02-15 01:51:43,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=1328, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:51:43,468 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:43,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 74 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:51:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-15 01:51:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 167. [2022-02-15 01:51:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.3641975308641976) internal successors, (221), 162 states have internal predecessors, (221), 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 01:51:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2022-02-15 01:51:43,542 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 35 [2022-02-15 01:51:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:43,542 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2022-02-15 01:51:43,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 01:51:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2022-02-15 01:51:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:51:43,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:43,543 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 01:51:43,543 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash -831754262, now seen corresponding path program 15 times [2022-02-15 01:51:43,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:43,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832317163] [2022-02-15 01:51:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:43,578 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:43,579 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:43,582 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_32.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:43,593 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_32.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:43,665 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 01:51:43,750 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:43,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832317163] [2022-02-15 01:51:43,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [832317163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:43,751 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:43,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:51:43,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349371281] [2022-02-15 01:51:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:43,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:51:43,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:51:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:51:43,752 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 15 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 01:51:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:44,787 INFO L93 Difference]: Finished difference Result 217 states and 286 transitions. [2022-02-15 01:51:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:51:44,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 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 35 [2022-02-15 01:51:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:44,788 INFO L225 Difference]: With dead ends: 217 [2022-02-15 01:51:44,788 INFO L226 Difference]: Without dead ends: 192 [2022-02-15 01:51:44,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 01:51:44,788 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:44,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 75 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:51:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-15 01:51:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 153. [2022-02-15 01:51:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.3783783783783783) internal successors, (204), 148 states have internal predecessors, (204), 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 01:51:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2022-02-15 01:51:44,852 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 35 [2022-02-15 01:51:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:44,852 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2022-02-15 01:51:44,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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 01:51:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2022-02-15 01:51:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:51:44,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:44,853 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:44,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 01:51:44,853 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:44,853 INFO L85 PathProgramCache]: Analyzing trace with hash 368928490, now seen corresponding path program 5 times [2022-02-15 01:51:44,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:44,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210388127] [2022-02-15 01:51:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:44,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:44,914 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:44,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:44,918 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_33.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:44,928 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_33.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:45,033 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 01:51:45,152 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:45,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210388127] [2022-02-15 01:51:45,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1210388127] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:45,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:45,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:51:45,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142219177] [2022-02-15 01:51:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:45,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:51:45,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:51:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:51:45,153 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:46,687 INFO L93 Difference]: Finished difference Result 202 states and 272 transitions. [2022-02-15 01:51:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 01:51:46,687 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:46,688 INFO L225 Difference]: With dead ends: 202 [2022-02-15 01:51:46,688 INFO L226 Difference]: Without dead ends: 179 [2022-02-15 01:51:46,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=391, Invalid=2471, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 01:51:46,689 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 90 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:46,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 83 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:51:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-15 01:51:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2022-02-15 01:51:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.380281690140845) internal successors, (196), 142 states have internal predecessors, (196), 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 01:51:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 200 transitions. [2022-02-15 01:51:46,757 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 200 transitions. Word has length 35 [2022-02-15 01:51:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:46,757 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 200 transitions. [2022-02-15 01:51:46,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 200 transitions. [2022-02-15 01:51:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:51:46,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:46,758 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:46,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 01:51:46,758 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:46,758 INFO L85 PathProgramCache]: Analyzing trace with hash 237906376, now seen corresponding path program 6 times [2022-02-15 01:51:46,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:46,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390971705] [2022-02-15 01:51:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:46,789 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:46,789 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:46,792 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_34.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:46,802 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_34.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:46,888 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 01:51:47,008 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:47,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390971705] [2022-02-15 01:51:47,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1390971705] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:47,009 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:47,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:51:47,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65861675] [2022-02-15 01:51:47,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:51:47,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:51:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:51:47,010 INFO L87 Difference]: Start difference. First operand 147 states and 200 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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 01:51:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:48,357 INFO L93 Difference]: Finished difference Result 428 states and 628 transitions. [2022-02-15 01:51:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:51:48,358 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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 35 [2022-02-15 01:51:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:48,359 INFO L225 Difference]: With dead ends: 428 [2022-02-15 01:51:48,359 INFO L226 Difference]: Without dead ends: 380 [2022-02-15 01:51:48,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:51:48,360 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 187 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:48,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 89 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:51:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-02-15 01:51:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 158. [2022-02-15 01:51:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.3856209150326797) internal successors, (212), 153 states have internal predecessors, (212), 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 01:51:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 216 transitions. [2022-02-15 01:51:48,438 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 216 transitions. Word has length 35 [2022-02-15 01:51:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:48,438 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 216 transitions. [2022-02-15 01:51:48,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 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 01:51:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 216 transitions. [2022-02-15 01:51:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 01:51:48,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:48,439 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:48,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 01:51:48,439 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2040976357, now seen corresponding path program 16 times [2022-02-15 01:51:48,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:48,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781147053] [2022-02-15 01:51:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:48,475 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:48,476 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:48,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:48,478 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_35.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:48,493 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_35.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:48,577 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:48,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781147053] [2022-02-15 01:51:48,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [781147053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:48,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:48,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:51:48,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310095848] [2022-02-15 01:51:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:48,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:51:48,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:51:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:51:48,578 INFO L87 Difference]: Start difference. First operand 158 states and 216 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 01:51:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:48,990 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2022-02-15 01:51:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:51:48,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 36 [2022-02-15 01:51:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:48,991 INFO L225 Difference]: With dead ends: 198 [2022-02-15 01:51:48,991 INFO L226 Difference]: Without dead ends: 171 [2022-02-15 01:51:48,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:51:48,991 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:48,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 47 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:51:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-02-15 01:51:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2022-02-15 01:51:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 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 01:51:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2022-02-15 01:51:49,058 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 36 [2022-02-15 01:51:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:49,058 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2022-02-15 01:51:49,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 01:51:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2022-02-15 01:51:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 01:51:49,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:49,059 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:49,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 01:51:49,059 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 254868036, now seen corresponding path program 17 times [2022-02-15 01:51:49,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:49,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223278868] [2022-02-15 01:51:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:49,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:49,095 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:49,098 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_36.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:49,110 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_36.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:49,325 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:49,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223278868] [2022-02-15 01:51:49,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223278868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:49,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:49,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:51:49,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388688909] [2022-02-15 01:51:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:49,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:51:49,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:51:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:51:49,327 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:50,762 INFO L93 Difference]: Finished difference Result 219 states and 301 transitions. [2022-02-15 01:51:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:51:50,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 36 [2022-02-15 01:51:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:50,764 INFO L225 Difference]: With dead ends: 219 [2022-02-15 01:51:50,764 INFO L226 Difference]: Without dead ends: 202 [2022-02-15 01:51:50,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1830, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:51:50,764 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:50,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 74 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 01:51:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-02-15 01:51:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 157. [2022-02-15 01:51:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.375) internal successors, (209), 152 states have internal predecessors, (209), 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 01:51:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2022-02-15 01:51:50,849 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 36 [2022-02-15 01:51:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:50,849 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2022-02-15 01:51:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2022-02-15 01:51:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 01:51:50,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:50,849 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:50,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 01:51:50,850 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1429571964, now seen corresponding path program 7 times [2022-02-15 01:51:50,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:50,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398193517] [2022-02-15 01:51:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:50,878 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:50,879 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:50,882 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_37.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:50,892 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_37.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:51,000 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 01:51:51,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:51,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398193517] [2022-02-15 01:51:51,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398193517] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:51,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:51,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:51:51,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829442349] [2022-02-15 01:51:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:51,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:51:51,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:51:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:51:51,131 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:52,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:52,610 INFO L93 Difference]: Finished difference Result 469 states and 675 transitions. [2022-02-15 01:51:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:51:52,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 36 [2022-02-15 01:51:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:52,612 INFO L225 Difference]: With dead ends: 469 [2022-02-15 01:51:52,612 INFO L226 Difference]: Without dead ends: 406 [2022-02-15 01:51:52,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:51:52,613 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 210 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:52,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 67 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:51:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-02-15 01:51:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 166. [2022-02-15 01:51:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.3726708074534162) internal successors, (221), 161 states have internal predecessors, (221), 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 01:51:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-02-15 01:51:52,704 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 36 [2022-02-15 01:51:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:52,704 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-02-15 01:51:52,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 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 01:51:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-02-15 01:51:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:51:52,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:52,704 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:52,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 01:51:52,705 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1529476664, now seen corresponding path program 8 times [2022-02-15 01:51:52,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:52,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744876960] [2022-02-15 01:51:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:52,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:52,737 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:52,749 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_38.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:52,774 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_38.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:52,881 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 01:51:52,964 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:52,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744876960] [2022-02-15 01:51:52,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744876960] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:52,964 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:52,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:51:52,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88650945] [2022-02-15 01:51:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:52,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:51:52,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:51:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:51:52,965 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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 01:51:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:54,053 INFO L93 Difference]: Finished difference Result 305 states and 419 transitions. [2022-02-15 01:51:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 01:51:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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 37 [2022-02-15 01:51:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:54,054 INFO L225 Difference]: With dead ends: 305 [2022-02-15 01:51:54,054 INFO L226 Difference]: Without dead ends: 288 [2022-02-15 01:51:54,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=1857, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 01:51:54,055 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:54,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 53 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:51:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-02-15 01:51:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 194. [2022-02-15 01:51:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.380952380952381) internal successors, (261), 189 states have internal predecessors, (261), 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 01:51:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 265 transitions. [2022-02-15 01:51:54,166 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 265 transitions. Word has length 37 [2022-02-15 01:51:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:54,166 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 265 transitions. [2022-02-15 01:51:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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 01:51:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 265 transitions. [2022-02-15 01:51:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 01:51:54,167 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:54,167 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:54,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 01:51:54,167 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1410664363, now seen corresponding path program 18 times [2022-02-15 01:51:54,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:54,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564481059] [2022-02-15 01:51:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:54,206 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:51:54,206 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:54,209 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_39.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:54,239 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_39.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:54,436 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 01:52:20,926 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:20,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564481059] [2022-02-15 01:52:20,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1564481059] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:20,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:20,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:52:20,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994335728] [2022-02-15 01:52:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:20,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:52:20,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:52:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=336, Unknown=4, NotChecked=0, Total=420 [2022-02-15 01:52:20,928 INFO L87 Difference]: Start difference. First operand 194 states and 265 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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 01:52:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:21,569 INFO L93 Difference]: Finished difference Result 255 states and 332 transitions. [2022-02-15 01:52:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:52:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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 38 [2022-02-15 01:52:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:21,570 INFO L225 Difference]: With dead ends: 255 [2022-02-15 01:52:21,570 INFO L226 Difference]: Without dead ends: 250 [2022-02-15 01:52:21,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=165, Invalid=887, Unknown=4, NotChecked=0, Total=1056 [2022-02-15 01:52:21,571 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:21,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 73 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 103 Unchecked, 0.2s Time] [2022-02-15 01:52:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-15 01:52:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 190. [2022-02-15 01:52:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 185 states have internal predecessors, (253), 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 01:52:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 257 transitions. [2022-02-15 01:52:21,689 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 257 transitions. Word has length 38 [2022-02-15 01:52:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:21,689 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 257 transitions. [2022-02-15 01:52:21,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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 01:52:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 257 transitions. [2022-02-15 01:52:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 01:52:21,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:21,690 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:21,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 01:52:21,690 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 899157845, now seen corresponding path program 9 times [2022-02-15 01:52:21,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:21,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643218579] [2022-02-15 01:52:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:21,731 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:21,731 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:21,735 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_40.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:21,748 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_40.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:22,021 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:22,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643218579] [2022-02-15 01:52:22,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643218579] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:22,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:22,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:52:22,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647366097] [2022-02-15 01:52:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:22,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:52:22,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:52:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:52:22,022 INFO L87 Difference]: Start difference. First operand 190 states and 257 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 01:52:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:23,937 INFO L93 Difference]: Finished difference Result 455 states and 601 transitions. [2022-02-15 01:52:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 01:52:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 38 [2022-02-15 01:52:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:23,938 INFO L225 Difference]: With dead ends: 455 [2022-02-15 01:52:23,938 INFO L226 Difference]: Without dead ends: 292 [2022-02-15 01:52:23,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=459, Invalid=3573, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 01:52:23,940 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:23,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 91 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:52:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-02-15 01:52:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 194. [2022-02-15 01:52:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 189 states have internal predecessors, (255), 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 01:52:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 259 transitions. [2022-02-15 01:52:24,072 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 259 transitions. Word has length 38 [2022-02-15 01:52:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:24,072 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 259 transitions. [2022-02-15 01:52:24,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 01:52:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 259 transitions. [2022-02-15 01:52:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 01:52:24,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:24,073 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:24,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 01:52:24,073 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash -164755688, now seen corresponding path program 10 times [2022-02-15 01:52:24,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:24,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737807152] [2022-02-15 01:52:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:24,101 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:24,101 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:24,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:24,105 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_41.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:52:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:24,114 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_41.2))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:52:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:24,234 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 01:52:24,462 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:24,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737807152] [2022-02-15 01:52:24,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1737807152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:24,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:24,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:52:24,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189807538] [2022-02-15 01:52:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:52:24,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:52:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:52:24,464 INFO L87 Difference]: Start difference. First operand 194 states and 259 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 01:52:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:27,150 INFO L93 Difference]: Finished difference Result 628 states and 901 transitions. [2022-02-15 01:52:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:52:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 01:52:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:27,152 INFO L225 Difference]: With dead ends: 628 [2022-02-15 01:52:27,152 INFO L226 Difference]: Without dead ends: 564 [2022-02-15 01:52:27,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 01:52:27,153 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 243 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:27,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 83 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 01:52:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-02-15 01:52:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 206. [2022-02-15 01:52:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.3532338308457712) internal successors, (272), 201 states have internal predecessors, (272), 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 01:52:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 276 transitions. [2022-02-15 01:52:27,293 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 276 transitions. Word has length 39 [2022-02-15 01:52:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 276 transitions. [2022-02-15 01:52:27,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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 01:52:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 276 transitions. [2022-02-15 01:52:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 01:52:27,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:27,293 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:27,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 01:52:27,294 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 106842550, now seen corresponding path program 11 times [2022-02-15 01:52:27,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:27,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334998589] [2022-02-15 01:52:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:27,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:27,326 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:27,329 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_42.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:27,340 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_42.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:27,474 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 01:52:27,715 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:27,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334998589] [2022-02-15 01:52:27,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [334998589] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:27,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:27,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:52:27,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931130518] [2022-02-15 01:52:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:27,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:52:27,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:52:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:52:27,716 INFO L87 Difference]: Start difference. First operand 206 states and 276 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 19 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 01:52:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:30,327 INFO L93 Difference]: Finished difference Result 655 states and 939 transitions. [2022-02-15 01:52:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 01:52:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 19 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 40 [2022-02-15 01:52:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:30,329 INFO L225 Difference]: With dead ends: 655 [2022-02-15 01:52:30,329 INFO L226 Difference]: Without dead ends: 591 [2022-02-15 01:52:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 01:52:30,330 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 348 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:30,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 79 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 01:52:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-02-15 01:52:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 217. [2022-02-15 01:52:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.3537735849056605) internal successors, (287), 212 states have internal predecessors, (287), 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 01:52:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 291 transitions. [2022-02-15 01:52:30,488 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 291 transitions. Word has length 40 [2022-02-15 01:52:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:30,488 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 291 transitions. [2022-02-15 01:52:30,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 19 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 01:52:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 291 transitions. [2022-02-15 01:52:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 01:52:30,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:30,489 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 01:52:30,489 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1046867033, now seen corresponding path program 19 times [2022-02-15 01:52:30,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:30,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272484872] [2022-02-15 01:52:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:30,535 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:30,535 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:30,539 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_43.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:30,563 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_43.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:30,651 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 01:52:30,751 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:30,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272484872] [2022-02-15 01:52:30,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [272484872] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:30,751 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:30,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:52:30,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398463354] [2022-02-15 01:52:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:30,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:52:30,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:52:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:52:30,752 INFO L87 Difference]: Start difference. First operand 217 states and 291 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 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 01:52:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:31,707 INFO L93 Difference]: Finished difference Result 363 states and 485 transitions. [2022-02-15 01:52:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:52:31,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 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 01:52:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:31,709 INFO L225 Difference]: With dead ends: 363 [2022-02-15 01:52:31,709 INFO L226 Difference]: Without dead ends: 353 [2022-02-15 01:52:31,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:52:31,709 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:31,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 55 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:52:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-15 01:52:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 227. [2022-02-15 01:52:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.364864864864865) internal successors, (303), 222 states have internal predecessors, (303), 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 01:52:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 307 transitions. [2022-02-15 01:52:31,881 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 307 transitions. Word has length 41 [2022-02-15 01:52:31,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:31,882 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 307 transitions. [2022-02-15 01:52:31,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 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 01:52:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 307 transitions. [2022-02-15 01:52:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 01:52:31,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:31,882 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:31,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 01:52:31,882 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash 831225272, now seen corresponding path program 12 times [2022-02-15 01:52:31,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:31,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759478240] [2022-02-15 01:52:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:31,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:31,928 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:31,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:31,931 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_44.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:31,946 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_44.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:32,199 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:32,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759478240] [2022-02-15 01:52:32,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759478240] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:32,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:32,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:52:32,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985213541] [2022-02-15 01:52:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:32,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:52:32,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:52:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:52:32,200 INFO L87 Difference]: Start difference. First operand 227 states and 307 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 01:52:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:34,611 INFO L93 Difference]: Finished difference Result 464 states and 616 transitions. [2022-02-15 01:52:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 01:52:34,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 01:52:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:34,612 INFO L225 Difference]: With dead ends: 464 [2022-02-15 01:52:34,612 INFO L226 Difference]: Without dead ends: 448 [2022-02-15 01:52:34,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=687, Invalid=3603, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 01:52:34,615 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 108 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:34,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 51 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 01:52:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-02-15 01:52:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 258. [2022-02-15 01:52:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.3715415019762847) internal successors, (347), 253 states have internal predecessors, (347), 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 01:52:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 351 transitions. [2022-02-15 01:52:34,826 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 351 transitions. Word has length 41 [2022-02-15 01:52:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:34,826 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 351 transitions. [2022-02-15 01:52:34,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 01:52:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 351 transitions. [2022-02-15 01:52:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 01:52:34,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:34,827 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:34,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 01:52:34,827 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1383374916, now seen corresponding path program 20 times [2022-02-15 01:52:34,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:34,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006300966] [2022-02-15 01:52:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:34,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:34,872 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:34,875 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_45.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:34,893 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_45.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:34,942 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 01:52:35,014 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:35,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006300966] [2022-02-15 01:52:35,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1006300966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:35,014 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:35,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:52:35,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043349090] [2022-02-15 01:52:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:35,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:52:35,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:52:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:52:35,015 INFO L87 Difference]: Start difference. First operand 258 states and 351 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 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 01:52:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:36,122 INFO L93 Difference]: Finished difference Result 426 states and 539 transitions. [2022-02-15 01:52:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 01:52:36,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 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 42 [2022-02-15 01:52:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:36,124 INFO L225 Difference]: With dead ends: 426 [2022-02-15 01:52:36,124 INFO L226 Difference]: Without dead ends: 388 [2022-02-15 01:52:36,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:52:36,124 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:36,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 51 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:52:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-02-15 01:52:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 263. [2022-02-15 01:52:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.3527131782945736) internal successors, (349), 258 states have internal predecessors, (349), 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 01:52:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 353 transitions. [2022-02-15 01:52:36,370 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 353 transitions. Word has length 42 [2022-02-15 01:52:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:36,370 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 353 transitions. [2022-02-15 01:52:36,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 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 01:52:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 353 transitions. [2022-02-15 01:52:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 01:52:36,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:36,371 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:36,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 01:52:36,371 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 29751636, now seen corresponding path program 5 times [2022-02-15 01:52:36,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:36,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365884259] [2022-02-15 01:52:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:36,401 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:36,402 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:36,405 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_46.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:36,420 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_46.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:36,506 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 01:52:36,646 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:36,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365884259] [2022-02-15 01:52:36,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365884259] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:36,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:36,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:52:36,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143317789] [2022-02-15 01:52:36,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:36,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:52:36,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:52:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:52:36,647 INFO L87 Difference]: Start difference. First operand 263 states and 353 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 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 01:52:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:40,475 INFO L93 Difference]: Finished difference Result 753 states and 980 transitions. [2022-02-15 01:52:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 01:52:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 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 42 [2022-02-15 01:52:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:40,477 INFO L225 Difference]: With dead ends: 753 [2022-02-15 01:52:40,477 INFO L226 Difference]: Without dead ends: 748 [2022-02-15 01:52:40,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1116, Invalid=5046, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 01:52:40,479 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 337 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:40,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 50 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 01:52:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-02-15 01:52:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 336. [2022-02-15 01:52:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 331 states have (on average 1.3413897280966767) internal successors, (444), 331 states have internal predecessors, (444), 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 01:52:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 448 transitions. [2022-02-15 01:52:40,788 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 448 transitions. Word has length 42 [2022-02-15 01:52:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:40,788 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 448 transitions. [2022-02-15 01:52:40,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 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 01:52:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 448 transitions. [2022-02-15 01:52:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 01:52:40,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:40,789 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:40,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 01:52:40,789 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash 924637287, now seen corresponding path program 13 times [2022-02-15 01:52:40,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:40,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895070149] [2022-02-15 01:52:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:42,839 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:42,839 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:42,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:42,842 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_47.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:42,856 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_47.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:43,020 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 01:52:43,230 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:43,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895070149] [2022-02-15 01:52:43,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [895070149] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:43,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:43,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:52:43,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606294074] [2022-02-15 01:52:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:43,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:52:43,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:52:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:52:43,231 INFO L87 Difference]: Start difference. First operand 336 states and 448 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:52:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:47,323 INFO L93 Difference]: Finished difference Result 834 states and 1087 transitions. [2022-02-15 01:52:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 01:52:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 42 [2022-02-15 01:52:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:47,325 INFO L225 Difference]: With dead ends: 834 [2022-02-15 01:52:47,325 INFO L226 Difference]: Without dead ends: 523 [2022-02-15 01:52:47,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=687, Invalid=5955, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 01:52:47,327 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 145 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:47,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 98 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 01:52:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-02-15 01:52:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 362. [2022-02-15 01:52:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 357 states have (on average 1.3109243697478992) internal successors, (468), 357 states have internal predecessors, (468), 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 01:52:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 472 transitions. [2022-02-15 01:52:47,658 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 472 transitions. Word has length 42 [2022-02-15 01:52:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:47,662 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 472 transitions. [2022-02-15 01:52:47,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:52:47,662 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 472 transitions. [2022-02-15 01:52:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 01:52:47,662 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:47,662 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:47,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 01:52:47,663 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1110505976, now seen corresponding path program 14 times [2022-02-15 01:52:47,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:47,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350403916] [2022-02-15 01:52:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:47,709 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:47,710 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:47,713 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_48.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:47,723 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_48.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:47,877 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 01:52:48,339 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:48,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350403916] [2022-02-15 01:52:48,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [350403916] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:48,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:48,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:52:48,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427657911] [2022-02-15 01:52:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:48,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:52:48,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:52:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:52:48,340 INFO L87 Difference]: Start difference. First operand 362 states and 472 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:52:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:53,705 INFO L93 Difference]: Finished difference Result 1068 states and 1505 transitions. [2022-02-15 01:52:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:52:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 43 [2022-02-15 01:52:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:53,708 INFO L225 Difference]: With dead ends: 1068 [2022-02-15 01:52:53,708 INFO L226 Difference]: Without dead ends: 932 [2022-02-15 01:52:53,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=483, Invalid=1679, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:52:53,709 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 339 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:53,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 82 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 01:52:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-02-15 01:52:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 376. [2022-02-15 01:52:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 371 states have (on average 1.3153638814016173) internal successors, (488), 371 states have internal predecessors, (488), 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 01:52:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 492 transitions. [2022-02-15 01:52:54,067 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 492 transitions. Word has length 43 [2022-02-15 01:52:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:54,068 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 492 transitions. [2022-02-15 01:52:54,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:52:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 492 transitions. [2022-02-15 01:52:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-15 01:52:54,068 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:54,068 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:54,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 01:52:54,069 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1648751236, now seen corresponding path program 15 times [2022-02-15 01:52:54,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:54,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71138622] [2022-02-15 01:52:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:54,126 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:54,127 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:54,130 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_49.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:54,141 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_49.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:54,725 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:54,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71138622] [2022-02-15 01:52:54,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [71138622] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:54,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:54,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:52:54,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612097132] [2022-02-15 01:52:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:54,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:52:54,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:52:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:52:54,726 INFO L87 Difference]: Start difference. First operand 376 states and 492 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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 01:52:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:59,120 INFO L93 Difference]: Finished difference Result 1102 states and 1553 transitions. [2022-02-15 01:52:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:52:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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 44 [2022-02-15 01:52:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:59,123 INFO L225 Difference]: With dead ends: 1102 [2022-02-15 01:52:59,123 INFO L226 Difference]: Without dead ends: 966 [2022-02-15 01:52:59,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=507, Invalid=1845, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:52:59,124 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 269 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:59,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 108 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 01:52:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-02-15 01:52:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 389. [2022-02-15 01:52:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 384 states have (on average 1.3177083333333333) internal successors, (506), 384 states have internal predecessors, (506), 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 01:52:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 510 transitions. [2022-02-15 01:52:59,508 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 510 transitions. Word has length 44 [2022-02-15 01:52:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:59,508 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 510 transitions. [2022-02-15 01:52:59,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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 01:52:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 510 transitions. [2022-02-15 01:52:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 01:52:59,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:59,509 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:59,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 01:52:59,509 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash -865152440, now seen corresponding path program 16 times [2022-02-15 01:52:59,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:59,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439749234] [2022-02-15 01:52:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:59,552 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:52:59,553 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:59,557 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_50.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:59,581 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_50.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:59,728 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 01:53:00,056 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:00,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439749234] [2022-02-15 01:53:00,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [439749234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:00,056 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:00,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:53:00,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412470839] [2022-02-15 01:53:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:00,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:53:00,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:00,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:53:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:53:00,064 INFO L87 Difference]: Start difference. First operand 389 states and 510 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 01:53:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:06,114 INFO L93 Difference]: Finished difference Result 759 states and 996 transitions. [2022-02-15 01:53:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 01:53:06,115 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 45 [2022-02-15 01:53:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:06,121 INFO L225 Difference]: With dead ends: 759 [2022-02-15 01:53:06,121 INFO L226 Difference]: Without dead ends: 738 [2022-02-15 01:53:06,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1061, Invalid=6079, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 01:53:06,122 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:06,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 72 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 01:53:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-02-15 01:53:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 438. [2022-02-15 01:53:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.3233256351039262) internal successors, (573), 433 states have internal predecessors, (573), 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 01:53:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 577 transitions. [2022-02-15 01:53:06,575 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 577 transitions. Word has length 45 [2022-02-15 01:53:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:06,575 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 577 transitions. [2022-02-15 01:53:06,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 01:53:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 577 transitions. [2022-02-15 01:53:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 01:53:06,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:06,576 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:06,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 01:53:06,576 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:06,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -762277995, now seen corresponding path program 21 times [2022-02-15 01:53:06,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:06,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207767442] [2022-02-15 01:53:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:06,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:06,607 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:06,610 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_51.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:06,639 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_51.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:06,856 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 01:53:07,306 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:07,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207767442] [2022-02-15 01:53:07,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1207767442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:07,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:07,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:53:07,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849434645] [2022-02-15 01:53:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:07,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:53:07,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:53:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:53:07,307 INFO L87 Difference]: Start difference. First operand 438 states and 577 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:53:10,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 01:53:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:12,366 INFO L93 Difference]: Finished difference Result 739 states and 908 transitions. [2022-02-15 01:53:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 01:53:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 46 [2022-02-15 01:53:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:12,369 INFO L225 Difference]: With dead ends: 739 [2022-02-15 01:53:12,369 INFO L226 Difference]: Without dead ends: 715 [2022-02-15 01:53:12,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 01:53:12,369 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:12,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 87 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 01:53:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-02-15 01:53:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 438. [2022-02-15 01:53:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.3210161662817552) internal successors, (572), 433 states have internal predecessors, (572), 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 01:53:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 576 transitions. [2022-02-15 01:53:12,827 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 576 transitions. Word has length 46 [2022-02-15 01:53:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:12,827 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 576 transitions. [2022-02-15 01:53:12,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 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 01:53:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 576 transitions. [2022-02-15 01:53:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 01:53:12,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:12,828 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:12,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 01:53:12,828 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash -225429739, now seen corresponding path program 17 times [2022-02-15 01:53:12,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:12,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470270683] [2022-02-15 01:53:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:12,861 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:12,861 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:12,864 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_52.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:12,882 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_52.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:13,084 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 01:53:13,491 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:13,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470270683] [2022-02-15 01:53:13,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470270683] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:13,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:13,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:53:13,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199768947] [2022-02-15 01:53:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:13,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:53:13,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:53:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:53:13,493 INFO L87 Difference]: Start difference. First operand 438 states and 576 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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 01:53:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:23,134 INFO L93 Difference]: Finished difference Result 1178 states and 1498 transitions. [2022-02-15 01:53:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 01:53:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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 46 [2022-02-15 01:53:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:23,136 INFO L225 Difference]: With dead ends: 1178 [2022-02-15 01:53:23,136 INFO L226 Difference]: Without dead ends: 775 [2022-02-15 01:53:23,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3820 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1107, Invalid=10883, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 01:53:23,138 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 196 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:23,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 117 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-15 01:53:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-02-15 01:53:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 467. [2022-02-15 01:53:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 462 states have (on average 1.2965367965367964) internal successors, (599), 462 states have internal predecessors, (599), 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 01:53:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 603 transitions. [2022-02-15 01:53:23,634 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 603 transitions. Word has length 46 [2022-02-15 01:53:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:23,634 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 603 transitions. [2022-02-15 01:53:23,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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 01:53:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 603 transitions. [2022-02-15 01:53:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 01:53:23,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:23,635 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 01:53:23,635 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1284526650, now seen corresponding path program 22 times [2022-02-15 01:53:23,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:23,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123246798] [2022-02-15 01:53:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:23,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:23,681 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:23,685 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_53.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:23,700 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_53.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:23,791 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 01:53:24,104 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:24,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123246798] [2022-02-15 01:53:24,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2123246798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:24,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:24,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:53:24,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741651264] [2022-02-15 01:53:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:24,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:53:24,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:53:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:53:24,105 INFO L87 Difference]: Start difference. First operand 467 states and 603 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 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 01:53:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:26,275 INFO L93 Difference]: Finished difference Result 779 states and 999 transitions. [2022-02-15 01:53:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:53:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 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 47 [2022-02-15 01:53:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:26,278 INFO L225 Difference]: With dead ends: 779 [2022-02-15 01:53:26,278 INFO L226 Difference]: Without dead ends: 768 [2022-02-15 01:53:26,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:53:26,283 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:26,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 63 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 01:53:26,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-02-15 01:53:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 486. [2022-02-15 01:53:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 481 states have (on average 1.3014553014553014) internal successors, (626), 481 states have internal predecessors, (626), 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 01:53:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 630 transitions. [2022-02-15 01:53:26,820 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 630 transitions. Word has length 47 [2022-02-15 01:53:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:26,820 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 630 transitions. [2022-02-15 01:53:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 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 01:53:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 630 transitions. [2022-02-15 01:53:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 01:53:26,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:26,821 INFO L514 BasicCegarLoop]: trace histogram [13, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:26,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 01:53:26,821 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 98816088, now seen corresponding path program 23 times [2022-02-15 01:53:26,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:26,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135608022] [2022-02-15 01:53:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:26,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:26,852 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:26,855 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_54.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:26,867 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_54.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:53:27,945 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:27,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135608022] [2022-02-15 01:53:27,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2135608022] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:27,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:27,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:53:27,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806720524] [2022-02-15 01:53:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:27,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:53:27,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:53:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:53:27,947 INFO L87 Difference]: Start difference. First operand 486 states and 630 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 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 01:53:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:34,911 INFO L93 Difference]: Finished difference Result 1472 states and 2074 transitions. [2022-02-15 01:53:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 01:53:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 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 47 [2022-02-15 01:53:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:34,914 INFO L225 Difference]: With dead ends: 1472 [2022-02-15 01:53:34,914 INFO L226 Difference]: Without dead ends: 1294 [2022-02-15 01:53:34,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=624, Invalid=2238, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 01:53:34,915 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 339 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:34,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 134 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 01:53:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-02-15 01:53:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 502. [2022-02-15 01:53:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 497 states have (on average 1.3058350100603622) internal successors, (649), 497 states have internal predecessors, (649), 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 01:53:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 653 transitions. [2022-02-15 01:53:35,487 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 653 transitions. Word has length 47 [2022-02-15 01:53:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:35,487 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 653 transitions. [2022-02-15 01:53:35,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 24 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 01:53:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 653 transitions. [2022-02-15 01:53:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 01:53:35,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:35,488 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:35,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 01:53:35,489 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash -951155067, now seen corresponding path program 24 times [2022-02-15 01:53:35,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:35,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012845726] [2022-02-15 01:53:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:35,549 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:35,549 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:35,552 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_55.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:35,574 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_55.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:35,645 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 01:53:35,795 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:35,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012845726] [2022-02-15 01:53:35,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2012845726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:35,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:35,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:53:35,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833194848] [2022-02-15 01:53:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:35,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:53:35,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:53:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:53:35,797 INFO L87 Difference]: Start difference. First operand 502 states and 653 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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 01:53:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:38,446 INFO L93 Difference]: Finished difference Result 778 states and 965 transitions. [2022-02-15 01:53:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 01:53:38,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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 48 [2022-02-15 01:53:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:38,448 INFO L225 Difference]: With dead ends: 778 [2022-02-15 01:53:38,448 INFO L226 Difference]: Without dead ends: 730 [2022-02-15 01:53:38,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=357, Invalid=1713, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 01:53:38,449 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 64 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:38,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 62 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:53:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-02-15 01:53:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 496. [2022-02-15 01:53:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 491 states have (on average 1.3034623217922607) internal successors, (640), 491 states have internal predecessors, (640), 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 01:53:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 644 transitions. [2022-02-15 01:53:39,059 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 644 transitions. Word has length 48 [2022-02-15 01:53:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:39,059 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 644 transitions. [2022-02-15 01:53:39,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 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 01:53:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 644 transitions. [2022-02-15 01:53:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 01:53:39,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:39,065 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:39,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 01:53:39,065 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:39,065 INFO L85 PathProgramCache]: Analyzing trace with hash -356064970, now seen corresponding path program 25 times [2022-02-15 01:53:39,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:39,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177100019] [2022-02-15 01:53:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:39,103 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:39,103 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:39,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:39,106 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_56.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:39,123 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_56.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:39,354 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 01:53:40,150 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:40,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177100019] [2022-02-15 01:53:40,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [177100019] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:40,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:40,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:53:40,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223484904] [2022-02-15 01:53:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:40,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:53:40,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:53:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:53:40,151 INFO L87 Difference]: Start difference. First operand 496 states and 644 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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 01:53:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:47,500 INFO L93 Difference]: Finished difference Result 1514 states and 2126 transitions. [2022-02-15 01:53:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:53:47,500 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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 48 [2022-02-15 01:53:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:47,503 INFO L225 Difference]: With dead ends: 1514 [2022-02-15 01:53:47,503 INFO L226 Difference]: Without dead ends: 1323 [2022-02-15 01:53:47,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=651, Invalid=2429, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 01:53:47,504 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 316 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:47,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 122 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-15 01:53:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-02-15 01:53:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 511. [2022-02-15 01:53:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 506 states have (on average 1.3063241106719368) internal successors, (661), 506 states have internal predecessors, (661), 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 01:53:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 665 transitions. [2022-02-15 01:53:48,143 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 665 transitions. Word has length 48 [2022-02-15 01:53:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 665 transitions. [2022-02-15 01:53:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 states have internal predecessors, (38), 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 01:53:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 665 transitions. [2022-02-15 01:53:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:53:48,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:48,145 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:48,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 01:53:48,145 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1453251912, now seen corresponding path program 26 times [2022-02-15 01:53:48,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:48,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226037497] [2022-02-15 01:53:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:48,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:48,171 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:48,174 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_57.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:48,195 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_57.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:48,348 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 01:53:48,941 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:48,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226037497] [2022-02-15 01:53:48,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [226037497] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:48,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:48,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:53:48,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884911387] [2022-02-15 01:53:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:48,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:53:48,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:53:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:53:48,942 INFO L87 Difference]: Start difference. First operand 511 states and 665 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 01:53:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:53,118 INFO L93 Difference]: Finished difference Result 847 states and 1040 transitions. [2022-02-15 01:53:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:53:53,118 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 49 [2022-02-15 01:53:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:53,120 INFO L225 Difference]: With dead ends: 847 [2022-02-15 01:53:53,120 INFO L226 Difference]: Without dead ends: 753 [2022-02-15 01:53:53,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=403, Invalid=1853, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 01:53:53,121 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:53,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 80 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 01:53:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-02-15 01:53:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 461. [2022-02-15 01:53:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3004385964912282) internal successors, (593), 456 states have internal predecessors, (593), 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 01:53:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 597 transitions. [2022-02-15 01:53:53,709 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 597 transitions. Word has length 49 [2022-02-15 01:53:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:53,710 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 597 transitions. [2022-02-15 01:53:53,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 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 01:53:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 597 transitions. [2022-02-15 01:53:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:53:53,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:53,710 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 01:53:53,711 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash -227583304, now seen corresponding path program 18 times [2022-02-15 01:53:53,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:53,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159188241] [2022-02-15 01:53:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:53,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:53:53,755 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:53,763 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_58.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:53,797 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_58.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:54,035 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 01:53:54,763 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:53:54,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159188241] [2022-02-15 01:53:54,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1159188241] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:53:54,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:53:54,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 01:53:54,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029612487] [2022-02-15 01:53:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:53:54,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 01:53:54,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:53:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 01:53:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:53:54,765 INFO L87 Difference]: Start difference. First operand 461 states and 597 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 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 01:54:09,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 01:54:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:54:22,236 INFO L93 Difference]: Finished difference Result 944 states and 1205 transitions. [2022-02-15 01:54:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 01:54:22,236 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 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 01:54:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:54:22,238 INFO L225 Difference]: With dead ends: 944 [2022-02-15 01:54:22,239 INFO L226 Difference]: Without dead ends: 920 [2022-02-15 01:54:22,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6120 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=1777, Invalid=16853, Unknown=2, NotChecked=0, Total=18632 [2022-02-15 01:54:22,240 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 191 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:54:22,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 109 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1888 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-02-15 01:54:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-02-15 01:54:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 514. [2022-02-15 01:54:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 1.306483300589391) internal successors, (665), 509 states have internal predecessors, (665), 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 01:54:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 669 transitions. [2022-02-15 01:54:22,944 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 669 transitions. Word has length 49 [2022-02-15 01:54:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:54:22,944 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 669 transitions. [2022-02-15 01:54:22,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 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 01:54:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 669 transitions. [2022-02-15 01:54:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 01:54:22,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:54:22,945 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:54:22,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 01:54:22,945 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:54:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:54:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -801586393, now seen corresponding path program 19 times [2022-02-15 01:54:22,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:54:22,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603049684] [2022-02-15 01:54:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:54:22,983 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:54:22,983 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:54:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:54:22,987 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_59.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:23,009 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_59.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:54:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:54:23,809 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:54:23,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603049684] [2022-02-15 01:54:23,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [603049684] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:54:23,809 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:54:23,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:54:23,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574598077] [2022-02-15 01:54:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:54:23,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:54:23,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:54:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:54:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:54:23,810 INFO L87 Difference]: Start difference. First operand 514 states and 669 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 01:54:25,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 01:54:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:54:37,081 INFO L93 Difference]: Finished difference Result 1034 states and 1278 transitions. [2022-02-15 01:54:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 01:54:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 50 [2022-02-15 01:54:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:54:37,084 INFO L225 Difference]: With dead ends: 1034 [2022-02-15 01:54:37,084 INFO L226 Difference]: Without dead ends: 1011 [2022-02-15 01:54:37,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2682 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1054, Invalid=8066, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 01:54:37,085 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 129 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:54:37,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 96 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-02-15 01:54:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-02-15 01:54:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 545. [2022-02-15 01:54:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 540 states have (on average 1.3240740740740742) internal successors, (715), 540 states have internal predecessors, (715), 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 01:54:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 719 transitions. [2022-02-15 01:54:37,803 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 719 transitions. Word has length 50 [2022-02-15 01:54:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:54:37,803 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 719 transitions. [2022-02-15 01:54:37,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 01:54:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 719 transitions. [2022-02-15 01:54:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 01:54:37,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:54:37,804 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:54:37,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 01:54:37,804 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:54:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:54:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2142860360, now seen corresponding path program 27 times [2022-02-15 01:54:37,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:54:37,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136763379] [2022-02-15 01:54:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:54:37,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:54:37,843 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:54:37,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:54:37,846 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_60.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:37,870 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_60.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:54:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:54:38,507 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:54:38,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136763379] [2022-02-15 01:54:38,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [136763379] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:54:38,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:54:38,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:54:38,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815747548] [2022-02-15 01:54:38,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:54:38,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:54:38,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:54:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:54:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:54:38,508 INFO L87 Difference]: Start difference. First operand 545 states and 719 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 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 01:54:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:54:42,784 INFO L93 Difference]: Finished difference Result 995 states and 1209 transitions. [2022-02-15 01:54:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:54:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 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 01:54:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:54:42,786 INFO L225 Difference]: With dead ends: 995 [2022-02-15 01:54:42,786 INFO L226 Difference]: Without dead ends: 892 [2022-02-15 01:54:42,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=417, Invalid=2033, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 01:54:42,787 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:54:42,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 51 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 01:54:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-02-15 01:54:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 498. [2022-02-15 01:54:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 493 states have (on average 1.3184584178498986) internal successors, (650), 493 states have internal predecessors, (650), 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 01:54:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 654 transitions. [2022-02-15 01:54:43,447 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 654 transitions. Word has length 51 [2022-02-15 01:54:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:54:43,448 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 654 transitions. [2022-02-15 01:54:43,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 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 01:54:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 654 transitions. [2022-02-15 01:54:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 01:54:43,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:54:43,449 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:54:43,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 01:54:43,449 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:54:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:54:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1415812968, now seen corresponding path program 20 times [2022-02-15 01:54:43,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:54:43,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395429011] [2022-02-15 01:54:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:54:43,486 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:54:43,486 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:54:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:54:43,490 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_61.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:43,512 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_61.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:54:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:54:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:43,742 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 01:54:44,544 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:54:44,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395429011] [2022-02-15 01:54:44,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395429011] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:54:44,544 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:54:44,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:54:44,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124392916] [2022-02-15 01:54:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:54:44,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:54:44,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:54:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:54:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:54:44,545 INFO L87 Difference]: Start difference. First operand 498 states and 654 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 27 states have internal predecessors, (40), 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 01:55:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:04,563 INFO L93 Difference]: Finished difference Result 1411 states and 1780 transitions. [2022-02-15 01:55:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 01:55:04,563 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 27 states have internal predecessors, (40), 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 01:55:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:04,565 INFO L225 Difference]: With dead ends: 1411 [2022-02-15 01:55:04,565 INFO L226 Difference]: Without dead ends: 952 [2022-02-15 01:55:04,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5947 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1515, Invalid=16307, Unknown=0, NotChecked=0, Total=17822 [2022-02-15 01:55:04,567 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 225 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:04,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 126 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-02-15 01:55:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-02-15 01:55:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 490. [2022-02-15 01:55:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.3175257731958763) internal successors, (639), 485 states have internal predecessors, (639), 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 01:55:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 643 transitions. [2022-02-15 01:55:05,255 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 643 transitions. Word has length 51 [2022-02-15 01:55:05,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:05,255 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 643 transitions. [2022-02-15 01:55:05,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 27 states have internal predecessors, (40), 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 01:55:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 643 transitions. [2022-02-15 01:55:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 01:55:05,256 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:05,256 INFO L514 BasicCegarLoop]: trace histogram [15, 10, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:05,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 01:55:05,256 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash 606738005, now seen corresponding path program 21 times [2022-02-15 01:55:05,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:05,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634256] [2022-02-15 01:55:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:05,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:55:05,292 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:05,295 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_62.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:05,311 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_62.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:55:07,684 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:07,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634256] [2022-02-15 01:55:07,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1634256] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:07,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:07,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:55:07,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058751753] [2022-02-15 01:55:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:07,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:55:07,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:55:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:55:07,686 INFO L87 Difference]: Start difference. First operand 490 states and 643 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 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 01:55:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:18,579 INFO L93 Difference]: Finished difference Result 1732 states and 2454 transitions. [2022-02-15 01:55:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 01:55:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 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 52 [2022-02-15 01:55:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:18,583 INFO L225 Difference]: With dead ends: 1732 [2022-02-15 01:55:18,583 INFO L226 Difference]: Without dead ends: 1560 [2022-02-15 01:55:18,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=783, Invalid=2877, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 01:55:18,584 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 459 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:18,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 108 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 01:55:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2022-02-15 01:55:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 508. [2022-02-15 01:55:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 503 states have (on average 1.320079522862823) internal successors, (664), 503 states have internal predecessors, (664), 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 01:55:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 668 transitions. [2022-02-15 01:55:19,303 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 668 transitions. Word has length 52 [2022-02-15 01:55:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:19,304 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 668 transitions. [2022-02-15 01:55:19,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 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 01:55:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 668 transitions. [2022-02-15 01:55:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:55:19,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:19,305 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:19,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 01:55:19,305 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash -43081415, now seen corresponding path program 28 times [2022-02-15 01:55:19,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:19,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901025846] [2022-02-15 01:55:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:19,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:55:19,331 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:19,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:19,334 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_63.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:19,362 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_63.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:19,476 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 01:55:19,781 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:19,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901025846] [2022-02-15 01:55:19,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1901025846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:19,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:19,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 01:55:19,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280364483] [2022-02-15 01:55:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:19,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 01:55:19,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 01:55:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-02-15 01:55:19,783 INFO L87 Difference]: Start difference. First operand 508 states and 668 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 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 01:55:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:23,513 INFO L93 Difference]: Finished difference Result 957 states and 1226 transitions. [2022-02-15 01:55:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:55:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 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 01:55:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:23,516 INFO L225 Difference]: With dead ends: 957 [2022-02-15 01:55:23,516 INFO L226 Difference]: Without dead ends: 916 [2022-02-15 01:55:23,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:55:23,517 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 181 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:23,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 56 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 01:55:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-02-15 01:55:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 511. [2022-02-15 01:55:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 506 states have (on average 1.3300395256916997) internal successors, (673), 506 states have internal predecessors, (673), 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 01:55:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 677 transitions. [2022-02-15 01:55:24,283 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 677 transitions. Word has length 53 [2022-02-15 01:55:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:24,283 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 677 transitions. [2022-02-15 01:55:24,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 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 01:55:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 677 transitions. [2022-02-15 01:55:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:55:24,284 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:24,284 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:24,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 01:55:24,284 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1030959415, now seen corresponding path program 6 times [2022-02-15 01:55:24,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:24,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340375287] [2022-02-15 01:55:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:24,323 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:55:24,324 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:24,327 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_64.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:24,356 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_64.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:55:25,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:25,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340375287] [2022-02-15 01:55:25,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [340375287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:25,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:25,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 01:55:25,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957594692] [2022-02-15 01:55:25,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:25,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 01:55:25,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 01:55:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:55:25,633 INFO L87 Difference]: Start difference. First operand 511 states and 677 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 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 01:55:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:43,046 INFO L93 Difference]: Finished difference Result 1108 states and 1408 transitions. [2022-02-15 01:55:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 01:55:43,047 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 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 53 [2022-02-15 01:55:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:43,049 INFO L225 Difference]: With dead ends: 1108 [2022-02-15 01:55:43,049 INFO L226 Difference]: Without dead ends: 1081 [2022-02-15 01:55:43,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4582 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1809, Invalid=11997, Unknown=0, NotChecked=0, Total=13806 [2022-02-15 01:55:43,050 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 137 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:43,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 80 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-02-15 01:55:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-02-15 01:55:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 585. [2022-02-15 01:55:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 580 states have (on average 1.2879310344827586) internal successors, (747), 580 states have internal predecessors, (747), 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 01:55:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 751 transitions. [2022-02-15 01:55:44,032 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 751 transitions. Word has length 53 [2022-02-15 01:55:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:44,032 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 751 transitions. [2022-02-15 01:55:44,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 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 01:55:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 751 transitions. [2022-02-15 01:55:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:55:44,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:44,033 INFO L514 BasicCegarLoop]: trace histogram [16, 10, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:44,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 01:55:44,033 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1868062311, now seen corresponding path program 22 times [2022-02-15 01:55:44,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:44,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811453737] [2022-02-15 01:55:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:44,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:55:44,075 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:44,078 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_65.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:44,096 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_65.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:44,362 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 01:55:45,808 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:45,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811453737] [2022-02-15 01:55:45,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811453737] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:45,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:45,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:55:45,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395828322] [2022-02-15 01:55:45,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:45,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:55:45,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:55:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:55:45,809 INFO L87 Difference]: Start difference. First operand 585 states and 751 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 01:55:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:59,564 INFO L93 Difference]: Finished difference Result 1927 states and 2669 transitions. [2022-02-15 01:55:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 01:55:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 01:55:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:59,568 INFO L225 Difference]: With dead ends: 1927 [2022-02-15 01:55:59,568 INFO L226 Difference]: Without dead ends: 1656 [2022-02-15 01:55:59,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 01:55:59,568 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 537 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:59,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 111 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 01:55:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-02-15 01:56:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 602. [2022-02-15 01:56:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 597 states have (on average 1.289782244556114) internal successors, (770), 597 states have internal predecessors, (770), 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 01:56:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 774 transitions. [2022-02-15 01:56:00,586 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 774 transitions. Word has length 53 [2022-02-15 01:56:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:56:00,586 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 774 transitions. [2022-02-15 01:56:00,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 01:56:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 774 transitions. [2022-02-15 01:56:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 01:56:00,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:56:00,587 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:56:00,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 01:56:00,587 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:56:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:56:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -184078635, now seen corresponding path program 23 times [2022-02-15 01:56:00,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:56:00,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953436140] [2022-02-15 01:56:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:56:00,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:56:00,617 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:56:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:56:00,619 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_66.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:56:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:56:00,644 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_66.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:56:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:56:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:56:00,942 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 01:56:02,430 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:56:02,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953436140] [2022-02-15 01:56:02,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1953436140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:56:02,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:56:02,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 01:56:02,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492137053] [2022-02-15 01:56:02,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:56:02,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 01:56:02,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:56:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 01:56:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:56:02,431 INFO L87 Difference]: Start difference. First operand 602 states and 774 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 01:56:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:56:37,966 INFO L93 Difference]: Finished difference Result 1718 states and 2127 transitions. [2022-02-15 01:56:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-15 01:56:37,966 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 54 [2022-02-15 01:56:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:56:37,968 INFO L225 Difference]: With dead ends: 1718 [2022-02-15 01:56:37,968 INFO L226 Difference]: Without dead ends: 1168 [2022-02-15 01:56:37,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8669 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=2002, Invalid=23120, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 01:56:37,970 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 227 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:56:37,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 136 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-02-15 01:56:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-02-15 01:56:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 593. [2022-02-15 01:56:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 588 states have (on average 1.2755102040816326) internal successors, (750), 588 states have internal predecessors, (750), 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 01:56:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 754 transitions. [2022-02-15 01:56:38,996 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 754 transitions. Word has length 54 [2022-02-15 01:56:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:56:38,997 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 754 transitions. [2022-02-15 01:56:38,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 01:56:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 754 transitions. [2022-02-15 01:56:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 01:56:38,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:56:38,998 INFO L514 BasicCegarLoop]: trace histogram [17, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:56:38,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 01:56:38,998 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:56:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:56:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -190363496, now seen corresponding path program 24 times [2022-02-15 01:56:38,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:56:38,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477868545] [2022-02-15 01:56:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:56:39,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:56:39,029 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:56:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:56:39,031 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_67.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:56:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:56:39,050 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_67.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:56:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:56:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:56:39,335 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 01:56:42,134 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:56:42,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477868545] [2022-02-15 01:56:42,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477868545] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:56:42,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:56:42,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 01:56:42,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793999586] [2022-02-15 01:56:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:56:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 01:56:42,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:56:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 01:56:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:56:42,135 INFO L87 Difference]: Start difference. First operand 593 states and 754 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 01:56:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:56:58,892 INFO L93 Difference]: Finished difference Result 2058 states and 2873 transitions. [2022-02-15 01:56:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 01:56:58,893 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 01:56:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:56:58,895 INFO L225 Difference]: With dead ends: 2058 [2022-02-15 01:56:58,895 INFO L226 Difference]: Without dead ends: 1806 [2022-02-15 01:56:58,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=960, Invalid=3596, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 01:56:58,896 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 402 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:56:58,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 142 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-15 01:56:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-02-15 01:56:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 611. [2022-02-15 01:56:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 606 states have (on average 1.278877887788779) internal successors, (775), 606 states have internal predecessors, (775), 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 01:56:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 779 transitions. [2022-02-15 01:56:59,972 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 779 transitions. Word has length 55 [2022-02-15 01:56:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:56:59,972 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 779 transitions. [2022-02-15 01:56:59,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 01:56:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 779 transitions. [2022-02-15 01:56:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 01:56:59,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:56:59,973 INFO L514 BasicCegarLoop]: trace histogram [18, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:56:59,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 01:56:59,974 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:56:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:56:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash -808405066, now seen corresponding path program 25 times [2022-02-15 01:56:59,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:56:59,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668331221] [2022-02-15 01:56:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:00,003 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:00,003 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:00,007 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_68.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:57:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:00,039 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_68.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:57:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:00,344 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 01:57:02,940 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:02,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668331221] [2022-02-15 01:57:02,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [668331221] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:02,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:02,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:57:02,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692354959] [2022-02-15 01:57:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:02,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:57:02,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:57:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:57:02,942 INFO L87 Difference]: Start difference. First operand 611 states and 779 transitions. Second operand has 32 states, 32 states have (on average 1.34375) internal successors, (43), 31 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 01:57:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:21,183 INFO L93 Difference]: Finished difference Result 2101 states and 2933 transitions. [2022-02-15 01:57:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 01:57:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 31 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 56 [2022-02-15 01:57:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:21,186 INFO L225 Difference]: With dead ends: 2101 [2022-02-15 01:57:21,186 INFO L226 Difference]: Without dead ends: 1849 [2022-02-15 01:57:21,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=993, Invalid=3837, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 01:57:21,187 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 450 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:21,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 143 Invalid, 3504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 3073 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-02-15 01:57:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-02-15 01:57:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 628. [2022-02-15 01:57:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 623 states have (on average 1.2808988764044944) internal successors, (798), 623 states have internal predecessors, (798), 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 01:57:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 802 transitions. [2022-02-15 01:57:22,319 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 802 transitions. Word has length 56 [2022-02-15 01:57:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:22,320 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 802 transitions. [2022-02-15 01:57:22,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 31 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 01:57:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 802 transitions. [2022-02-15 01:57:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 01:57:22,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:22,320 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:22,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 01:57:22,321 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 315217848, now seen corresponding path program 26 times [2022-02-15 01:57:22,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:22,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935309032] [2022-02-15 01:57:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:22,360 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:57:22,360 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:22,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:22,363 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_69.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:57:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:22,393 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_69.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:57:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:22,660 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 01:57:24,619 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:24,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935309032] [2022-02-15 01:57:24,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935309032] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:24,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:24,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:57:24,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896161295] [2022-02-15 01:57:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:24,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:57:24,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:57:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:57:24,620 INFO L87 Difference]: Start difference. First operand 628 states and 802 transitions. Second operand has 32 states, 32 states have (on average 1.375) internal successors, (44), 31 states have internal predecessors, (44), 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 01:57:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:59,066 INFO L93 Difference]: Finished difference Result 1530 states and 1896 transitions. [2022-02-15 01:57:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-15 01:57:59,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 31 states have internal predecessors, (44), 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 01:57:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:59,068 INFO L225 Difference]: With dead ends: 1530 [2022-02-15 01:57:59,068 INFO L226 Difference]: Without dead ends: 1508 [2022-02-15 01:57:59,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7237 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=2520, Invalid=18072, Unknown=0, NotChecked=0, Total=20592 [2022-02-15 01:57:59,069 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 235 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:59,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 51 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-02-15 01:57:59,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-02-15 01:58:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 679. [2022-02-15 01:58:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 674 states have (on average 1.2908011869436202) internal successors, (870), 674 states have internal predecessors, (870), 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 01:58:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 874 transitions. [2022-02-15 01:58:00,424 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 874 transitions. Word has length 57 [2022-02-15 01:58:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:00,424 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 874 transitions. [2022-02-15 01:58:00,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 31 states have internal predecessors, (44), 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 01:58:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 874 transitions. [2022-02-15 01:58:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 01:58:00,425 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:00,425 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:00,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 01:58:00,425 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash -303599690, now seen corresponding path program 7 times [2022-02-15 01:58:00,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:00,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250320779] [2022-02-15 01:58:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:00,461 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:00,461 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:58:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:00,464 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_70.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:58:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:00,493 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_70.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:58:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:00,733 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 01:58:02,644 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:02,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250320779] [2022-02-15 01:58:02,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250320779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:02,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:02,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:58:02,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569732250] [2022-02-15 01:58:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:02,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:58:02,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:58:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:58:02,645 INFO L87 Difference]: Start difference. First operand 679 states and 874 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 01:58:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:13,934 INFO L93 Difference]: Finished difference Result 1448 states and 1711 transitions. [2022-02-15 01:58:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 01:58:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 58 [2022-02-15 01:58:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:13,937 INFO L225 Difference]: With dead ends: 1448 [2022-02-15 01:58:13,937 INFO L226 Difference]: Without dead ends: 1333 [2022-02-15 01:58:13,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=683, Invalid=3477, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 01:58:13,937 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:13,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 85 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 01:58:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2022-02-15 01:58:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 642. [2022-02-15 01:58:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 637 states have (on average 1.2762951334379906) internal successors, (813), 637 states have internal predecessors, (813), 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 01:58:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 817 transitions. [2022-02-15 01:58:15,257 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 817 transitions. Word has length 58 [2022-02-15 01:58:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:15,257 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 817 transitions. [2022-02-15 01:58:15,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 28 states have internal predecessors, (40), 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 01:58:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 817 transitions. [2022-02-15 01:58:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 01:58:15,258 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:15,258 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:15,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 01:58:15,258 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734297, now seen corresponding path program 27 times [2022-02-15 01:58:15,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:15,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662195722] [2022-02-15 01:58:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:15,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:58:15,290 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:58:15,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:15,293 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_71.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:58:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:15,325 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_71.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:58:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:15,844 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 01:58:18,279 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:58:18,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662195722] [2022-02-15 01:58:18,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1662195722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:58:18,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:58:18,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:58:18,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067840031] [2022-02-15 01:58:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:58:18,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:58:18,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:58:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:58:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 01:58:18,281 INFO L87 Difference]: Start difference. First operand 642 states and 817 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 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 01:58:58,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 01:59:05,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:00:00,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:00:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:16,875 INFO L93 Difference]: Finished difference Result 2277 states and 2827 transitions. [2022-02-15 02:00:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-02-15 02:00:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 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 58 [2022-02-15 02:00:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:16,878 INFO L225 Difference]: With dead ends: 2277 [2022-02-15 02:00:16,878 INFO L226 Difference]: Without dead ends: 1681 [2022-02-15 02:00:16,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16811 ImplicationChecksByTransitivity, 66.8s TimeCoverageRelationStatistics Valid=3204, Invalid=41526, Unknown=2, NotChecked=0, Total=44732 [2022-02-15 02:00:16,880 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 240 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 669 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:16,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 161 Invalid, 4618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 3947 Invalid, 2 Unknown, 0 Unchecked, 49.9s Time] [2022-02-15 02:00:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2022-02-15 02:00:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 868. [2022-02-15 02:00:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 863 states have (on average 1.2375434530706837) internal successors, (1068), 863 states have internal predecessors, (1068), 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 02:00:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1072 transitions. [2022-02-15 02:00:18,539 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1072 transitions. Word has length 58 [2022-02-15 02:00:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:18,539 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1072 transitions. [2022-02-15 02:00:18,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 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 02:00:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1072 transitions. [2022-02-15 02:00:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 02:00:18,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:18,540 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:18,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 02:00:18,540 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1136706394, now seen corresponding path program 29 times [2022-02-15 02:00:18,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:18,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179921941] [2022-02-15 02:00:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:18,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:18,573 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:00:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:18,577 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_72.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:00:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:18,611 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_72.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:00:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:18,748 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 02:00:19,397 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:19,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179921941] [2022-02-15 02:00:19,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [179921941] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:19,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:19,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:00:19,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554089419] [2022-02-15 02:00:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:19,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:00:19,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:00:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:00:19,398 INFO L87 Difference]: Start difference. First operand 868 states and 1072 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 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 02:00:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:00:26,717 INFO L93 Difference]: Finished difference Result 1528 states and 1891 transitions. [2022-02-15 02:00:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:00:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 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 59 [2022-02-15 02:00:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:00:26,719 INFO L225 Difference]: With dead ends: 1528 [2022-02-15 02:00:26,719 INFO L226 Difference]: Without dead ends: 1482 [2022-02-15 02:00:26,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=338, Invalid=994, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:00:26,720 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 198 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:00:26,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 59 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:00:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-02-15 02:00:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 860. [2022-02-15 02:00:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 855 states have (on average 1.246783625730994) internal successors, (1066), 855 states have internal predecessors, (1066), 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 02:00:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1070 transitions. [2022-02-15 02:00:28,441 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1070 transitions. Word has length 59 [2022-02-15 02:00:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:00:28,441 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 1070 transitions. [2022-02-15 02:00:28,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 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 02:00:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1070 transitions. [2022-02-15 02:00:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 02:00:28,443 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:00:28,443 INFO L514 BasicCegarLoop]: trace histogram [19, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:00:28,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 02:00:28,443 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:00:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:00:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1987991205, now seen corresponding path program 28 times [2022-02-15 02:00:28,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:00:28,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847213985] [2022-02-15 02:00:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:00:28,474 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:00:28,474 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:00:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:00:28,477 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_73.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:00:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:28,501 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_73.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:00:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:00:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:00:28,886 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 02:00:35,653 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:00:35,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847213985] [2022-02-15 02:00:35,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1847213985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:00:35,654 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:00:35,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:00:35,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367240283] [2022-02-15 02:00:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:00:35,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:00:35,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:00:35,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:00:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=846, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:00:35,655 INFO L87 Difference]: Start difference. First operand 860 states and 1070 transitions. Second operand has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 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 02:01:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:06,608 INFO L93 Difference]: Finished difference Result 2970 states and 4069 transitions. [2022-02-15 02:01:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:01:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 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 60 [2022-02-15 02:01:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:06,615 INFO L225 Difference]: With dead ends: 2970 [2022-02-15 02:01:06,616 INFO L226 Difference]: Without dead ends: 2656 [2022-02-15 02:01:06,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=1290, Invalid=4716, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:01:06,617 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 442 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:06,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 146 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-02-15 02:01:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-02-15 02:01:08,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 894. [2022-02-15 02:01:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 889 states have (on average 1.249718785151856) internal successors, (1111), 889 states have internal predecessors, (1111), 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 02:01:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1115 transitions. [2022-02-15 02:01:08,325 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1115 transitions. Word has length 60 [2022-02-15 02:01:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:08,325 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1115 transitions. [2022-02-15 02:01:08,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 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 02:01:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1115 transitions. [2022-02-15 02:01:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 02:01:08,326 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:08,326 INFO L514 BasicCegarLoop]: trace histogram [20, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:08,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 02:01:08,326 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -550689273, now seen corresponding path program 29 times [2022-02-15 02:01:08,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:08,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589450593] [2022-02-15 02:01:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:08,359 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:08,360 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:01:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:08,365 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_74.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:01:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:08,394 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_74.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:01:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:08,789 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 02:01:15,604 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:15,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589450593] [2022-02-15 02:01:15,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [589450593] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:15,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:15,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:01:15,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364601398] [2022-02-15 02:01:15,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:01:15,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:01:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=903, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:01:15,606 INFO L87 Difference]: Start difference. First operand 894 states and 1115 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 35 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 02:01:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:49,601 INFO L93 Difference]: Finished difference Result 3030 states and 4144 transitions. [2022-02-15 02:01:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:01:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 35 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 61 [2022-02-15 02:01:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:49,605 INFO L225 Difference]: With dead ends: 3030 [2022-02-15 02:01:49,605 INFO L226 Difference]: Without dead ends: 2716 [2022-02-15 02:01:49,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=1329, Invalid=4991, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 02:01:49,606 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 4407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:49,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 147 Invalid, 4407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 3746 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-02-15 02:01:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-02-15 02:01:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 924. [2022-02-15 02:01:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 919 states have (on average 1.249183895538629) internal successors, (1148), 919 states have internal predecessors, (1148), 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 02:01:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1152 transitions. [2022-02-15 02:01:51,447 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1152 transitions. Word has length 61 [2022-02-15 02:01:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:51,448 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1152 transitions. [2022-02-15 02:01:51,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 35 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 02:01:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1152 transitions. [2022-02-15 02:01:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 02:01:51,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:51,449 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:51,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 02:01:51,449 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 794560549, now seen corresponding path program 30 times [2022-02-15 02:01:51,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:51,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161228103] [2022-02-15 02:01:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:51,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:01:51,478 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:01:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:51,481 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_75.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:01:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:51,517 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_75.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:01:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:01:56,826 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:56,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161228103] [2022-02-15 02:01:56,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161228103] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:56,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:56,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:01:56,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923740554] [2022-02-15 02:01:56,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:56,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:01:56,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:01:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=981, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:01:56,827 INFO L87 Difference]: Start difference. First operand 924 states and 1152 transitions. Second operand has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 35 states have internal predecessors, (48), 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 02:02:20,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:02:32,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:02:34,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:02:55,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:03:13,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:03:40,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:04:02,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:04:05,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:04:09,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:05:00,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:05:02,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:05:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:05:14,676 INFO L93 Difference]: Finished difference Result 4148 states and 5392 transitions. [2022-02-15 02:05:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2022-02-15 02:05:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 35 states have internal predecessors, (48), 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 62 [2022-02-15 02:05:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:05:14,682 INFO L225 Difference]: With dead ends: 4148 [2022-02-15 02:05:14,682 INFO L226 Difference]: Without dead ends: 4118 [2022-02-15 02:05:14,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50193 ImplicationChecksByTransitivity, 122.8s TimeCoverageRelationStatistics Valid=16070, Invalid=99190, Unknown=0, NotChecked=0, Total=115260 [2022-02-15 02:05:14,687 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 604 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 1223 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:05:14,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 48 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 1928 Invalid, 1 Unknown, 0 Unchecked, 67.7s Time] [2022-02-15 02:05:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2022-02-15 02:05:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 1013. [2022-02-15 02:05:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1008 states have (on average 1.3700396825396826) internal successors, (1381), 1008 states have internal predecessors, (1381), 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 02:05:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1385 transitions. [2022-02-15 02:05:16,692 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1385 transitions. Word has length 62 [2022-02-15 02:05:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:05:16,692 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1385 transitions. [2022-02-15 02:05:16,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 35 states have internal predecessors, (48), 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 02:05:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1385 transitions. [2022-02-15 02:05:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 02:05:16,694 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:05:16,694 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:05:16,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 02:05:16,694 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:05:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:05:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2097578348, now seen corresponding path program 8 times [2022-02-15 02:05:16,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:05:16,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64191378] [2022-02-15 02:05:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:05:16,720 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:05:16,720 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:05:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:05:16,723 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_76.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:05:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:16,760 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_76.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 02:05:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:05:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:05:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:05:20,657 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:05:20,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64191378] [2022-02-15 02:05:20,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [64191378] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:05:20,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:05:20,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:05:20,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019313326] [2022-02-15 02:05:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:05:20,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:05:20,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:05:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:05:20,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:05:20,658 INFO L87 Difference]: Start difference. First operand 1013 states and 1385 transitions. Second operand has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 36 states have internal predecessors, (48), 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)