/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-de41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:48:46,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:48:46,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:48:46,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:48:46,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:48:46,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:48:46,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:48:46,756 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 01:48:46,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:48:46,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:48:46,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:48:46,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:48:46,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:48:46,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:48:46,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:48:46,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:48:46,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:48:46,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:48:46,782 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:48:46,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:48:47,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:48:47,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:48:47,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:48:47,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:48:47,119 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:48:47,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de41.c [2022-02-15 01:48:47,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f5b16f8/5e46fd712d90426aa6f30182898a3987/FLAG4d3e06151 [2022-02-15 01:48:47,717 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:48:47,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de41.c [2022-02-15 01:48:47,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f5b16f8/5e46fd712d90426aa6f30182898a3987/FLAG4d3e06151 [2022-02-15 01:48:48,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f5b16f8/5e46fd712d90426aa6f30182898a3987 [2022-02-15 01:48:48,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:48:48,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:48:48,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:48:48,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:48:48,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:48:48,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cf51d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48, skipping insertion in model container [2022-02-15 01:48:48,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:48:48,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:48:48,330 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-de41.c[368,381] [2022-02-15 01:48:48,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:48:48,359 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:48:48,368 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-de41.c[368,381] [2022-02-15 01:48:48,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:48:48,380 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:48:48,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48 WrapperNode [2022-02-15 01:48:48,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:48:48,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:48:48,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:48:48,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:48:48,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:48:48,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:48:48,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:48:48,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:48:48,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (1/1) ... [2022-02-15 01:48:48,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:48:48,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:48:48,434 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 01:48:48,441 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 01:48:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:48:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:48:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:48:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:48:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-15 01:48:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:48:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:48:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:48:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:48:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:48:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:48:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:48:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:48:48,547 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:48:48,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:48:48,652 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:48:48,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:48:48,656 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-15 01:48:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:48:48 BoogieIcfgContainer [2022-02-15 01:48:48,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:48:48,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:48:48,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:48:48,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:48:48,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:48:48" (1/3) ... [2022-02-15 01:48:48,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ceb3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:48:48, skipping insertion in model container [2022-02-15 01:48:48,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:48" (2/3) ... [2022-02-15 01:48:48,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ceb3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:48:48, skipping insertion in model container [2022-02-15 01:48:48,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:48:48" (3/3) ... [2022-02-15 01:48:48,672 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de41.c [2022-02-15 01:48:48,676 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:48:48,676 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:48:48,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:48:48,716 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 01:48:48,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:48:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 01:48:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 01:48:48,728 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:48,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:48,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2066875484, now seen corresponding path program 1 times [2022-02-15 01:48:48,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:48,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270577042] [2022-02-15 01:48:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:48,784 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:48:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:48,934 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:48,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270577042] [2022-02-15 01:48:48,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [270577042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:48,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:48,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 01:48:48,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796790618] [2022-02-15 01:48:48,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:48,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 01:48:48,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 01:48:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:48:48,971 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:49,025 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2022-02-15 01:48:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 01:48:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-15 01:48:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:49,031 INFO L225 Difference]: With dead ends: 39 [2022-02-15 01:48:49,032 INFO L226 Difference]: Without dead ends: 16 [2022-02-15 01:48:49,033 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 01:48:49,036 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 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 01:48:49,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-15 01:48:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-02-15 01:48:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-02-15 01:48:49,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 15 [2022-02-15 01:48:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-02-15 01:48:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-02-15 01:48:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 01:48:49,083 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:49,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:49,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:48:49,085 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2063181400, now seen corresponding path program 1 times [2022-02-15 01:48:49,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:49,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255822713] [2022-02-15 01:48:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:49,093 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:48:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:49,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:49,422 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:49,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255822713] [2022-02-15 01:48:49,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [255822713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:49,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:49,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:48:49,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321365266] [2022-02-15 01:48:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:48:49,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:48:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:48:49,425 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:49,620 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-02-15 01:48:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:48:49,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-15 01:48:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:49,621 INFO L225 Difference]: With dead ends: 35 [2022-02-15 01:48:49,622 INFO L226 Difference]: Without dead ends: 22 [2022-02-15 01:48:49,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:48:49,630 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:49,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 33 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:48:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-15 01:48:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-02-15 01:48:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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 01:48:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-02-15 01:48:49,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2022-02-15 01:48:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:49,641 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-02-15 01:48:49,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-02-15 01:48:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-15 01:48:49,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:49,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:49,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:48:49,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash 570818913, now seen corresponding path program 1 times [2022-02-15 01:48:49,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:49,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401182797] [2022-02-15 01:48:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:49,793 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 01:48:49,794 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:49,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:49,805 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:49,834 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:52,346 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:52,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401182797] [2022-02-15 01:48:52,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [401182797] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:52,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:52,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:48:52,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579144621] [2022-02-15 01:48:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:52,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:48:52,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:48:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:48:52,348 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:52,501 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-02-15 01:48:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:48:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 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 16 [2022-02-15 01:48:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:52,504 INFO L225 Difference]: With dead ends: 30 [2022-02-15 01:48:52,504 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 01:48:52,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:48:52,506 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:52,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-02-15 01:48:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 01:48:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-02-15 01:48:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 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 01:48:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-02-15 01:48:52,515 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-02-15 01:48:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:52,515 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-02-15 01:48:52,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-02-15 01:48:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:48:52,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:52,516 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 01:48:52,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:48:52,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -417354376, now seen corresponding path program 1 times [2022-02-15 01:48:52,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:52,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644736759] [2022-02-15 01:48:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:52,574 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 01:48:52,575 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:52,591 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 01:48:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:52,613 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 01:48:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:52,709 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:52,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644736759] [2022-02-15 01:48:52,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [644736759] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:52,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:52,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 01:48:52,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597332529] [2022-02-15 01:48:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:52,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 01:48:52,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 01:48:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:48:52,712 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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 01:48:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:52,772 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-02-15 01:48:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:48:52,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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 01:48:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:52,774 INFO L225 Difference]: With dead ends: 31 [2022-02-15 01:48:52,774 INFO L226 Difference]: Without dead ends: 20 [2022-02-15 01:48:52,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:48:52,783 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:52,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-15 01:48:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-02-15 01:48:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 01:48:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-02-15 01:48:52,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 17 [2022-02-15 01:48:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:52,794 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-02-15 01:48:52,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 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 01:48:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-02-15 01:48:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:48:52,795 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:52,795 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 01:48:52,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 01:48:52,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash 550012215, now seen corresponding path program 1 times [2022-02-15 01:48:52,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:52,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971969430] [2022-02-15 01:48:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:52,854 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 01:48:52,855 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:52,866 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:52,884 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:52,932 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:52,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971969430] [2022-02-15 01:48:52,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [971969430] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:52,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:52,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:48:52,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083124114] [2022-02-15 01:48:52,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:52,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:48:52,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:52,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:48:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:48:52,933 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) 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 01:48:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:52,982 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2022-02-15 01:48:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:48:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) 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 01:48:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:52,986 INFO L225 Difference]: With dead ends: 31 [2022-02-15 01:48:52,987 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 01:48:52,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:48:52,992 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:52,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 01:48:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-02-15 01:48:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-02-15 01:48:53,000 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 17 [2022-02-15 01:48:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:53,000 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-02-15 01:48:53,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) 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 01:48:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-02-15 01:48:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:48:53,000 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:53,001 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 01:48:53,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 01:48:53,001 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1952840614, now seen corresponding path program 1 times [2022-02-15 01:48:53,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:53,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782070434] [2022-02-15 01:48:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:53,061 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 01:48:53,062 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:53,067 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 01:48:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,076 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 01:48:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:53,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:53,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782070434] [2022-02-15 01:48:53,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782070434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:53,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:53,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:48:53,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040010951] [2022-02-15 01:48:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:53,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:48:53,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:48:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:48:53,132 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:53,195 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-02-15 01:48:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:48:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:53,196 INFO L225 Difference]: With dead ends: 27 [2022-02-15 01:48:53,196 INFO L226 Difference]: Without dead ends: 19 [2022-02-15 01:48:53,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 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 01:48:53,197 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:53,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-15 01:48:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-02-15 01:48:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 01:48:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-02-15 01:48:53,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 17 [2022-02-15 01:48:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:53,202 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-02-15 01:48:53,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-02-15 01:48:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 01:48:53,202 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:53,203 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 01:48:53,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 01:48:53,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1804119273, now seen corresponding path program 1 times [2022-02-15 01:48:53,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:53,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949893174] [2022-02-15 01:48:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:53,257 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 01:48:53,257 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:53,262 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 01:48:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,270 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 01:48:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:53,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:53,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949893174] [2022-02-15 01:48:53,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1949893174] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:53,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:53,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:48:53,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008973754] [2022-02-15 01:48:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:53,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:48:53,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:48:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:48:53,309 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:53,381 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-02-15 01:48:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:48:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:53,382 INFO L225 Difference]: With dead ends: 26 [2022-02-15 01:48:53,382 INFO L226 Difference]: Without dead ends: 20 [2022-02-15 01:48:53,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 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 01:48:53,382 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:53,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-15 01:48:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-02-15 01:48:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 01:48:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-02-15 01:48:53,390 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2022-02-15 01:48:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:53,390 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-02-15 01:48:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 01:48:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-02-15 01:48:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 01:48:53,391 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:53,391 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 01:48:53,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 01:48:53,392 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1344200880, now seen corresponding path program 1 times [2022-02-15 01:48:53,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:53,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961717603] [2022-02-15 01:48:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:53,437 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 01:48:53,438 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:53,443 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 01:48:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,469 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 01:48:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:53,503 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:53,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961717603] [2022-02-15 01:48:53,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961717603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:53,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:53,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:48:53,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30959523] [2022-02-15 01:48:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:53,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:48:53,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:53,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:48:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:48:53,505 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) 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 01:48:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:53,597 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-02-15 01:48:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 01:48:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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 01:48:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:53,598 INFO L225 Difference]: With dead ends: 33 [2022-02-15 01:48:53,598 INFO L226 Difference]: Without dead ends: 28 [2022-02-15 01:48:53,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 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 01:48:53,599 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:53,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:48:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-15 01:48:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-02-15 01:48:53,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:48:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-02-15 01:48:53,605 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 18 [2022-02-15 01:48:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:53,605 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-02-15 01:48:53,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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 01:48:53,605 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-02-15 01:48:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 01:48:53,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:53,606 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 01:48:53,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 01:48:53,606 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1244950584, now seen corresponding path program 1 times [2022-02-15 01:48:53,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:53,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742266287] [2022-02-15 01:48:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:54,053 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 01:48:54,054 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:54,059 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 01:48:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:54,082 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_7.5))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:54,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:54,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742266287] [2022-02-15 01:48:54,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742266287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:54,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:54,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:48:54,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029365076] [2022-02-15 01:48:54,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:54,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:48:54,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:54,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:48:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:48:54,460 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 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 01:48:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:54,777 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-02-15 01:48:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 01:48:54,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 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 01:48:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:54,779 INFO L225 Difference]: With dead ends: 35 [2022-02-15 01:48:54,779 INFO L226 Difference]: Without dead ends: 30 [2022-02-15 01:48:54,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:48:54,780 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:54,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 51 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-02-15 01:48:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-15 01:48:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-02-15 01:48:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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 01:48:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-02-15 01:48:54,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 19 [2022-02-15 01:48:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:54,789 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-02-15 01:48:54,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 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 01:48:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-02-15 01:48:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:48:54,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:54,790 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:54,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 01:48:54,790 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:54,791 INFO L85 PathProgramCache]: Analyzing trace with hash 95732656, now seen corresponding path program 2 times [2022-02-15 01:48:54,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:54,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061029467] [2022-02-15 01:48:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:54,851 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 01:48:54,852 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:54,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:54,857 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 01:48:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:54,866 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_8.2))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:48:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:54,915 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:54,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061029467] [2022-02-15 01:48:54,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2061029467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:54,915 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:54,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:48:54,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179306137] [2022-02-15 01:48:54,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:54,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:48:54,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:48:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:48:54,917 INFO L87 Difference]: Start difference. First operand 28 states and 37 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 01:48:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:55,009 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2022-02-15 01:48:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 01:48:55,009 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 01:48:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:55,010 INFO L225 Difference]: With dead ends: 42 [2022-02-15 01:48:55,010 INFO L226 Difference]: Without dead ends: 34 [2022-02-15 01:48:55,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:48:55,011 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:55,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:48:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-15 01:48:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-02-15 01:48:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 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 01:48:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-02-15 01:48:55,023 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2022-02-15 01:48:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:55,023 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-02-15 01:48:55,023 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 01:48:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-02-15 01:48:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:48:55,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:55,024 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:55,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 01:48:55,024 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash 633740065, now seen corresponding path program 3 times [2022-02-15 01:48:55,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:55,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322207354] [2022-02-15 01:48:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:55,065 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 01:48:55,065 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:55,070 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 01:48:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:55,085 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_9.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:48:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:55,567 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:55,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322207354] [2022-02-15 01:48:55,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322207354] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:55,567 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:55,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:48:55,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373202035] [2022-02-15 01:48:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:55,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:48:55,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:48:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:48:55,569 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 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 01:48:59,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:59,168 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2022-02-15 01:48:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:48:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 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 01:48:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:59,171 INFO L225 Difference]: With dead ends: 62 [2022-02-15 01:48:59,171 INFO L226 Difference]: Without dead ends: 48 [2022-02-15 01:48:59,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:48:59,172 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:59,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 42 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 76 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-02-15 01:48:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-15 01:48:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2022-02-15 01:48:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 01:48:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-02-15 01:48:59,198 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 20 [2022-02-15 01:48:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-02-15 01:48:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 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 01:48:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-02-15 01:48:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 01:48:59,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:59,201 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:59,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 01:48:59,201 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1130993808, now seen corresponding path program 2 times [2022-02-15 01:48:59,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:59,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950026018] [2022-02-15 01:48:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:59,262 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 01:48:59,262 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:59,270 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 01:48:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:59,297 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 01:48:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:59,354 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 01:48:59,375 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:59,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950026018] [2022-02-15 01:48:59,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1950026018] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:59,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:59,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:48:59,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440204613] [2022-02-15 01:48:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:59,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:48:59,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:48:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:48:59,377 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 01:48:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:59,560 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions. [2022-02-15 01:48:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:48:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 01:48:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:59,561 INFO L225 Difference]: With dead ends: 67 [2022-02-15 01:48:59,561 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 01:48:59,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 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 01:48:59,562 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:59,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:48:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 01:48:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2022-02-15 01:48:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 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 01:48:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-02-15 01:48:59,581 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 20 [2022-02-15 01:48:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:59,581 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-02-15 01:48:59,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 01:48:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-02-15 01:48:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:48:59,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:59,583 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:59,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 01:48:59,584 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1461340774, now seen corresponding path program 4 times [2022-02-15 01:48:59,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:59,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923338479] [2022-02-15 01:48:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:48:59,717 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 01:48:59,717 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:48:59,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:48:59,722 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 01:48:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:59,743 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 01:48:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:48:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:48:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:48:59,803 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:48:59,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923338479] [2022-02-15 01:48:59,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [923338479] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:48:59,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:48:59,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 01:48:59,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397760755] [2022-02-15 01:48:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:48:59,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 01:48:59,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:48:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 01:48:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-15 01:48:59,804 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 01:48:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:48:59,967 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-02-15 01:48:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:48:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 21 [2022-02-15 01:48:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:48:59,970 INFO L225 Difference]: With dead ends: 62 [2022-02-15 01:48:59,970 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 01:48:59,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 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 01:48:59,971 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:48:59,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:48:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 01:48:59,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-02-15 01:48:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 30 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 01:48:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-02-15 01:48:59,988 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 21 [2022-02-15 01:48:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:48:59,989 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-02-15 01:48:59,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 01:48:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-02-15 01:48:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:48:59,991 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:48:59,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:48:59,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 01:48:59,991 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:48:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:48:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1247228840, now seen corresponding path program 5 times [2022-02-15 01:48:59,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:48:59,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403031789] [2022-02-15 01:48:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:00,047 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 01:49:00,047 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:00,051 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 01:49:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:00,082 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 01:49:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:03,732 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:03,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403031789] [2022-02-15 01:49:03,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1403031789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:03,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:03,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:49:03,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761086739] [2022-02-15 01:49:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:03,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:49:03,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:49:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2022-02-15 01:49:03,734 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 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 01:49:18,418 WARN L228 SmtUtils]: Spent 14.30s on a formula simplification. DAG size of input: 58 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:49:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:18,833 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2022-02-15 01:49:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:49:18,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 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 01:49:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:18,834 INFO L225 Difference]: With dead ends: 52 [2022-02-15 01:49:18,834 INFO L226 Difference]: Without dead ends: 44 [2022-02-15 01:49:18,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=78, Invalid=427, Unknown=1, NotChecked=0, Total=506 [2022-02-15 01:49:18,835 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:18,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 150 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-02-15 01:49:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-15 01:49:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-02-15 01:49:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 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 01:49:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-02-15 01:49:18,851 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 23 [2022-02-15 01:49:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:18,851 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-02-15 01:49:18,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 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 01:49:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-02-15 01:49:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:49:18,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:18,853 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:18,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 01:49:18,853 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1748448584, now seen corresponding path program 6 times [2022-02-15 01:49:18,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:18,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583987402] [2022-02-15 01:49:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:18,893 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 01:49:18,893 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:18,898 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 01:49:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:18,914 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 01:49:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:19,016 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:19,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583987402] [2022-02-15 01:49:19,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1583987402] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:19,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:19,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:49:19,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540353515] [2022-02-15 01:49:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:49:19,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:49:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 01:49:19,018 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 01:49:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:19,301 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2022-02-15 01:49:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:49:19,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 23 [2022-02-15 01:49:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:19,302 INFO L225 Difference]: With dead ends: 76 [2022-02-15 01:49:19,302 INFO L226 Difference]: Without dead ends: 70 [2022-02-15 01:49:19,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:49:19,303 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:19,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 35 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:49:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-15 01:49:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2022-02-15 01:49:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2022-02-15 01:49:19,322 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 23 [2022-02-15 01:49:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:19,322 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2022-02-15 01:49:19,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 01:49:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2022-02-15 01:49:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 01:49:19,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:19,324 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 01:49:19,324 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -476532785, now seen corresponding path program 7 times [2022-02-15 01:49:19,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:19,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475452437] [2022-02-15 01:49:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:19,373 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 01:49:19,373 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:19,377 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 01:49:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:19,401 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_14.4))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:49:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:26,456 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:26,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475452437] [2022-02-15 01:49:26,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1475452437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:26,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:26,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:49:26,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637414652] [2022-02-15 01:49:26,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:26,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:49:26,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:49:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=164, Unknown=2, NotChecked=0, Total=210 [2022-02-15 01:49:26,457 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 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 01:49:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:40,912 INFO L93 Difference]: Finished difference Result 90 states and 122 transitions. [2022-02-15 01:49:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:49:40,913 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 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 01:49:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:40,913 INFO L225 Difference]: With dead ends: 90 [2022-02-15 01:49:40,913 INFO L226 Difference]: Without dead ends: 72 [2022-02-15 01:49:40,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=148, Invalid=549, Unknown=5, NotChecked=0, Total=702 [2022-02-15 01:49:40,914 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:40,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 63 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 138 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-02-15 01:49:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-15 01:49:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-02-15 01:49:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 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 01:49:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2022-02-15 01:49:40,943 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 24 [2022-02-15 01:49:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:40,943 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2022-02-15 01:49:40,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 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 01:49:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2022-02-15 01:49:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 01:49:40,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:40,944 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:40,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 01:49:40,944 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1165944096, now seen corresponding path program 8 times [2022-02-15 01:49:40,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:40,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303831215] [2022-02-15 01:49:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:40,983 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 01:49:40,984 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:40,989 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 01:49:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:41,006 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 01:49:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:41,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:41,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303831215] [2022-02-15 01:49:41,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303831215] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:41,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:41,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:49:41,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145067717] [2022-02-15 01:49:41,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:41,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:49:41,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:49:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:49:41,111 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:41,521 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2022-02-15 01:49:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:49:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-15 01:49:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:41,522 INFO L225 Difference]: With dead ends: 107 [2022-02-15 01:49:41,522 INFO L226 Difference]: Without dead ends: 101 [2022-02-15 01:49:41,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 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 01:49:41,523 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:41,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 40 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:49:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-15 01:49:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2022-02-15 01:49:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 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 01:49:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2022-02-15 01:49:41,561 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 24 [2022-02-15 01:49:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2022-02-15 01:49:41,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2022-02-15 01:49:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 01:49:41,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:41,562 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:41,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 01:49:41,562 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:41,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 176966584, now seen corresponding path program 9 times [2022-02-15 01:49:41,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:41,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606590452] [2022-02-15 01:49:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:41,602 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 01:49:41,602 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:41,606 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 01:49:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:41,627 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 01:49:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:41,735 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:41,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606590452] [2022-02-15 01:49:41,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [606590452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:41,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:41,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:49:41,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418089118] [2022-02-15 01:49:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:41,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:49:41,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:49:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:49:41,736 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:42,077 INFO L93 Difference]: Finished difference Result 91 states and 117 transitions. [2022-02-15 01:49:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:49:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 01:49:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:42,078 INFO L225 Difference]: With dead ends: 91 [2022-02-15 01:49:42,078 INFO L226 Difference]: Without dead ends: 54 [2022-02-15 01:49:42,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:49:42,079 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:42,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:49:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-15 01:49:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2022-02-15 01:49:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 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 01:49:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2022-02-15 01:49:42,097 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 25 [2022-02-15 01:49:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:42,097 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2022-02-15 01:49:42,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2022-02-15 01:49:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:49:42,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:42,097 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:42,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 01:49:42,098 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash -828351928, now seen corresponding path program 10 times [2022-02-15 01:49:42,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:42,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568551490] [2022-02-15 01:49:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:42,139 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 01:49:42,139 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:42,142 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 01:49:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:42,171 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_17.4))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)))) 0)) [2022-02-15 01:49:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:51,218 WARN L228 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:49:51,219 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:51,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568551490] [2022-02-15 01:49:51,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1568551490] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:51,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:51,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:49:51,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326909022] [2022-02-15 01:49:51,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:51,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:49:51,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:51,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:49:51,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:49:51,220 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 17 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 01:49:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:54,031 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-02-15 01:49:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:49:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 17 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 27 [2022-02-15 01:49:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:54,031 INFO L225 Difference]: With dead ends: 65 [2022-02-15 01:49:54,032 INFO L226 Difference]: Without dead ends: 44 [2022-02-15 01:49:54,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 01:49:54,033 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:54,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 57 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-02-15 01:49:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-15 01:49:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-02-15 01:49:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 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 01:49:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-02-15 01:49:54,054 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 27 [2022-02-15 01:49:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:54,054 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-02-15 01:49:54,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 17 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 01:49:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-02-15 01:49:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:49:54,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:54,054 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:54,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 01:49:54,055 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash -913168760, now seen corresponding path program 11 times [2022-02-15 01:49:54,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:54,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681158445] [2022-02-15 01:49:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:54,208 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 01:49:54,209 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:54,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:54,212 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 01:49:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:54,224 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_18.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:49:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:54,399 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:54,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681158445] [2022-02-15 01:49:54,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681158445] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:54,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:54,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:49:54,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46144420] [2022-02-15 01:49:54,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:54,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:49:54,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:49:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:49:54,401 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 01:49:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:54,982 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2022-02-15 01:49:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:49:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 27 [2022-02-15 01:49:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:54,983 INFO L225 Difference]: With dead ends: 80 [2022-02-15 01:49:54,983 INFO L226 Difference]: Without dead ends: 74 [2022-02-15 01:49:54,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:49:54,984 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:54,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 35 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:49:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-15 01:49:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2022-02-15 01:49:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 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 01:49:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-02-15 01:49:55,012 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 27 [2022-02-15 01:49:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:55,012 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-02-15 01:49:55,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 01:49:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-02-15 01:49:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 01:49:55,013 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:55,013 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:55,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 01:49:55,013 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash 177771346, now seen corresponding path program 12 times [2022-02-15 01:49:55,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:55,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583869986] [2022-02-15 01:49:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:55,091 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 01:49:55,091 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:55,096 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 01:49:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:55,107 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 01:49:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:55,302 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:55,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583869986] [2022-02-15 01:49:55,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [583869986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:55,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:55,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:49:55,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489923868] [2022-02-15 01:49:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:55,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:49:55,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:49:55,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:49:55,303 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 01:49:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:55,957 INFO L93 Difference]: Finished difference Result 87 states and 114 transitions. [2022-02-15 01:49:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:49:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 01:49:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:55,959 INFO L225 Difference]: With dead ends: 87 [2022-02-15 01:49:55,959 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 01:49:55,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:49:55,962 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:55,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 33 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:49:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 01:49:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 57. [2022-02-15 01:49:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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 01:49:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2022-02-15 01:49:56,000 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 28 [2022-02-15 01:49:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:56,000 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2022-02-15 01:49:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 01:49:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2022-02-15 01:49:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:49:56,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:56,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:56,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 01:49:56,001 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:56,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -415205978, now seen corresponding path program 13 times [2022-02-15 01:49:56,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:56,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861479566] [2022-02-15 01:49:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:56,036 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 01:49:56,036 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:56,041 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 01:49:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:56,068 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 01:49:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:49:56,215 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:49:56,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861479566] [2022-02-15 01:49:56,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [861479566] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:49:56,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:49:56,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:49:56,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415295302] [2022-02-15 01:49:56,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:49:56,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:49:56,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:49:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:49:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-02-15 01:49:56,216 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 01:49:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:49:56,839 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2022-02-15 01:49:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:49:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 29 [2022-02-15 01:49:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:49:56,842 INFO L225 Difference]: With dead ends: 88 [2022-02-15 01:49:56,842 INFO L226 Difference]: Without dead ends: 74 [2022-02-15 01:49:56,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:49:56,843 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:49:56,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 69 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 01:49:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-15 01:49:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-02-15 01:49:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:49:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2022-02-15 01:49:56,880 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 29 [2022-02-15 01:49:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:49:56,880 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2022-02-15 01:49:56,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 01:49:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2022-02-15 01:49:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 01:49:56,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:49:56,881 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:49:56,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 01:49:56,881 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:49:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:49:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -991215487, now seen corresponding path program 14 times [2022-02-15 01:49:56,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:49:56,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74247375] [2022-02-15 01:49:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:49:56,914 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 01:49:56,914 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:49:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:49:56,919 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 01:49:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:56,975 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_21.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:49:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:49:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:49:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:11,353 WARN L228 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:50:11,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:11,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74247375] [2022-02-15 01:50:11,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [74247375] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:11,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:11,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:50:11,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738972871] [2022-02-15 01:50:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:11,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:50:11,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:50:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=399, Unknown=1, NotChecked=0, Total=462 [2022-02-15 01:50:11,356 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 18 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 01:50:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:12,023 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2022-02-15 01:50:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:50:12,023 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 18 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 30 [2022-02-15 01:50:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:12,024 INFO L225 Difference]: With dead ends: 97 [2022-02-15 01:50:12,024 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 01:50:12,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=107, Invalid=822, Unknown=1, NotChecked=0, Total=930 [2022-02-15 01:50:12,027 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:12,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 72 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 253 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-02-15 01:50:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 01:50:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2022-02-15 01:50:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:50:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-02-15 01:50:12,081 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 30 [2022-02-15 01:50:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:12,082 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-02-15 01:50:12,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 18 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 01:50:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-02-15 01:50:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 01:50:12,082 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:12,082 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:12,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 01:50:12,082 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2085098719, now seen corresponding path program 15 times [2022-02-15 01:50:12,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:12,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945995103] [2022-02-15 01:50:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:12,114 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 01:50:12,115 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:12,137 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 01:50:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:12,150 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 01:50:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:12,379 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:12,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945995103] [2022-02-15 01:50:12,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [945995103] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:12,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:12,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:50:12,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535945441] [2022-02-15 01:50:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:12,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:50:12,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:50:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:50:12,383 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 01:50:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:13,035 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2022-02-15 01:50:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:50:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 30 [2022-02-15 01:50:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:13,036 INFO L225 Difference]: With dead ends: 127 [2022-02-15 01:50:13,036 INFO L226 Difference]: Without dead ends: 121 [2022-02-15 01:50:13,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:50:13,037 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:13,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 51 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:50:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-15 01:50:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 77. [2022-02-15 01:50:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 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 01:50:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2022-02-15 01:50:13,076 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 30 [2022-02-15 01:50:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:13,077 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2022-02-15 01:50:13,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 01:50:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2022-02-15 01:50:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 01:50:13,077 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:13,077 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:13,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 01:50:13,077 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1667641082, now seen corresponding path program 16 times [2022-02-15 01:50:13,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:13,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871539895] [2022-02-15 01:50:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:13,132 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 01:50:13,133 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:13,136 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 01:50:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:13,154 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 01:50:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:13,284 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 01:50:13,377 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:13,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871539895] [2022-02-15 01:50:13,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [871539895] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:13,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:13,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:50:13,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792868130] [2022-02-15 01:50:13,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:13,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:50:13,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:50:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:50:13,379 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 01:50:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:14,118 INFO L93 Difference]: Finished difference Result 161 states and 208 transitions. [2022-02-15 01:50:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:50:14,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 31 [2022-02-15 01:50:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:14,121 INFO L225 Difference]: With dead ends: 161 [2022-02-15 01:50:14,121 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 01:50:14,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:50:14,123 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:14,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 77 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:50:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 01:50:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-02-15 01:50:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:50:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-02-15 01:50:14,189 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 31 [2022-02-15 01:50:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:14,190 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-02-15 01:50:14,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 01:50:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-02-15 01:50:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 01:50:14,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:14,191 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:14,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 01:50:14,191 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -715850976, now seen corresponding path program 17 times [2022-02-15 01:50:14,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:14,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896841721] [2022-02-15 01:50:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:14,244 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 01:50:14,244 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:14,259 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 01:50:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:14,296 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 01:50:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:14,577 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:14,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896841721] [2022-02-15 01:50:14,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896841721] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:14,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:14,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:50:14,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757735578] [2022-02-15 01:50:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:14,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:50:14,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:50:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:50:14,578 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 01:50:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:15,521 INFO L93 Difference]: Finished difference Result 143 states and 200 transitions. [2022-02-15 01:50:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:50:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 32 [2022-02-15 01:50:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:15,522 INFO L225 Difference]: With dead ends: 143 [2022-02-15 01:50:15,522 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 01:50:15,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:50:15,523 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 125 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:15,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 41 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:50:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 01:50:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 80. [2022-02-15 01:50:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 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 01:50:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-02-15 01:50:15,577 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 32 [2022-02-15 01:50:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:15,577 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-02-15 01:50:15,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 01:50:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-02-15 01:50:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 01:50:15,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:15,580 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 01:50:15,580 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1131406856, now seen corresponding path program 18 times [2022-02-15 01:50:15,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:15,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634359888] [2022-02-15 01:50:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:15,699 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 01:50:15,700 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:15,704 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 01:50:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:15,741 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 01:50:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:15,972 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:15,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634359888] [2022-02-15 01:50:15,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [634359888] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:15,973 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:15,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:50:15,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259173965] [2022-02-15 01:50:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:15,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:50:15,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:50:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:50:15,974 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 01:50:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:17,700 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-02-15 01:50:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:50:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 01:50:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:17,701 INFO L225 Difference]: With dead ends: 120 [2022-02-15 01:50:17,701 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 01:50:17,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 01:50:17,702 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:17,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 89 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:50:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 01:50:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2022-02-15 01:50:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 74 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:50:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-02-15 01:50:17,766 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 33 [2022-02-15 01:50:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:17,767 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-02-15 01:50:17,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 01:50:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-02-15 01:50:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 01:50:17,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:17,767 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:17,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 01:50:17,768 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1464317553, now seen corresponding path program 19 times [2022-02-15 01:50:17,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:17,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051314142] [2022-02-15 01:50:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:17,828 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 01:50:17,828 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:17,834 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 01:50:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:17,871 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_26.4))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:50:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:32,556 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:32,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051314142] [2022-02-15 01:50:32,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051314142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:32,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:32,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:50:32,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796352590] [2022-02-15 01:50:32,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:32,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:50:32,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:50:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:50:32,558 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 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 01:50:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:35,960 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2022-02-15 01:50:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:50:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 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 34 [2022-02-15 01:50:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:35,961 INFO L225 Difference]: With dead ends: 100 [2022-02-15 01:50:35,961 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 01:50:35,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=196, Invalid=1966, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:50:35,963 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:35,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 351 Invalid, 0 Unknown, 92 Unchecked, 0.4s Time] [2022-02-15 01:50:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 01:50:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-02-15 01:50:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 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 01:50:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-02-15 01:50:36,012 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 34 [2022-02-15 01:50:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:36,012 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-02-15 01:50:36,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 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 01:50:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-02-15 01:50:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 01:50:36,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:36,012 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:36,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 01:50:36,012 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1089655055, now seen corresponding path program 20 times [2022-02-15 01:50:36,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:36,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277341922] [2022-02-15 01:50:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:36,044 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 01:50:36,044 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:36,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:36,048 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 01:50:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:36,058 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 01:50:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:36,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:36,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277341922] [2022-02-15 01:50:36,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [277341922] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:36,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:36,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 01:50:36,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388883009] [2022-02-15 01:50:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:36,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 01:50:36,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 01:50:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-02-15 01:50:36,380 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 01:50:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:38,078 INFO L93 Difference]: Finished difference Result 128 states and 163 transitions. [2022-02-15 01:50:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:50:38,078 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 34 [2022-02-15 01:50:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:38,079 INFO L225 Difference]: With dead ends: 128 [2022-02-15 01:50:38,079 INFO L226 Difference]: Without dead ends: 122 [2022-02-15 01:50:38,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:50:38,079 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 113 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:38,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 41 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:50:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-15 01:50:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 81. [2022-02-15 01:50:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.236842105263158) internal successors, (94), 76 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:50:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2022-02-15 01:50:38,129 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 34 [2022-02-15 01:50:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:38,129 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2022-02-15 01:50:38,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 01:50:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2022-02-15 01:50:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:50:38,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:38,130 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:38,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 01:50:38,130 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -338911287, now seen corresponding path program 21 times [2022-02-15 01:50:38,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:38,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498793867] [2022-02-15 01:50:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:38,162 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 01:50:38,163 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:38,166 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 01:50:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:38,183 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 01:50:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:38,496 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:38,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498793867] [2022-02-15 01:50:38,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [498793867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:38,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:38,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:50:38,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721797888] [2022-02-15 01:50:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:38,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:50:38,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:50:38,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:50:38,498 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 01:50:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:39,730 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2022-02-15 01:50:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 01:50:39,730 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 01:50:39,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:39,731 INFO L225 Difference]: With dead ends: 137 [2022-02-15 01:50:39,731 INFO L226 Difference]: Without dead ends: 131 [2022-02-15 01:50:39,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:50:39,732 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 141 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:39,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 54 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 01:50:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-15 01:50:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2022-02-15 01:50:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:50:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2022-02-15 01:50:39,790 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 35 [2022-02-15 01:50:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:39,791 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2022-02-15 01:50:39,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 01:50:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2022-02-15 01:50:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 01:50:39,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:39,791 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:39,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 01:50:39,791 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash -18080689, now seen corresponding path program 22 times [2022-02-15 01:50:39,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:39,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310215904] [2022-02-15 01:50:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:39,827 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 01:50:39,827 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:39,832 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 01:50:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:39,847 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 01:50:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:40,145 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:40,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310215904] [2022-02-15 01:50:40,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [310215904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:40,145 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:40,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:50:40,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495312972] [2022-02-15 01:50:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:40,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:50:40,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:50:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:50:40,146 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 01:50:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:50:43,464 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2022-02-15 01:50:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 01:50:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 36 [2022-02-15 01:50:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:50:43,466 INFO L225 Difference]: With dead ends: 152 [2022-02-15 01:50:43,466 INFO L226 Difference]: Without dead ends: 134 [2022-02-15 01:50:43,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=355, Invalid=1807, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:50:43,467 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:50:43,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 92 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 01:50:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-15 01:50:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 96. [2022-02-15 01:50:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 91 states have internal predecessors, (111), 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 01:50:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2022-02-15 01:50:43,560 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 36 [2022-02-15 01:50:43,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:50:43,560 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2022-02-15 01:50:43,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 01:50:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2022-02-15 01:50:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:50:43,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:50:43,561 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:50:43,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 01:50:43,561 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:50:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:50:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1504079672, now seen corresponding path program 23 times [2022-02-15 01:50:43,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:50:43,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015166075] [2022-02-15 01:50:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:50:43,621 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 01:50:43,621 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:50:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:50:43,627 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 01:50:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:43,674 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_30.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:50:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:50:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:50:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:50:56,816 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 4 c_main_~x~0))) (and (or (and (= (+ (- 4) c_main_~y~0) 0) (= c_main_~n~0 .cse0)) (and (forall ((v_it_30 Int)) (or (< 0 (mod (+ (* 4294967295 v_it_30) c_main_~n~0) 4294967296)) (not (<= (+ 5 v_it_30) c_main_~y~0)) (not (<= 1 v_it_30)))) (= (+ c_main_~x~0 c_main_~y~0) c_main_~n~0) (< 0 (mod c_main_~n~0 4294967296)) (< 4 c_main_~y~0))) (< 0 (mod (+ c_main_~x~0 1) 4294967296)) (< 0 (mod (+ 3 c_main_~x~0) 4294967296)) (< 0 (mod .cse0 4294967296)) (< 0 (mod (+ 2 c_main_~x~0) 4294967296)))) is different from false [2022-02-15 01:50:56,819 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:50:56,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015166075] [2022-02-15 01:50:56,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2015166075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:50:56,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:50:56,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:50:56,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625691311] [2022-02-15 01:50:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:50:56,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:50:56,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:50:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:50:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=329, Unknown=2, NotChecked=36, Total=420 [2022-02-15 01:50:56,820 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 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 01:51:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:08,173 INFO L93 Difference]: Finished difference Result 157 states and 189 transitions. [2022-02-15 01:51:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 01:51:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 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 01:51:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:08,174 INFO L225 Difference]: With dead ends: 157 [2022-02-15 01:51:08,174 INFO L226 Difference]: Without dead ends: 145 [2022-02-15 01:51:08,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=109, Invalid=882, Unknown=5, NotChecked=60, Total=1056 [2022-02-15 01:51:08,176 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:08,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 365 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-02-15 01:51:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-15 01:51:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2022-02-15 01:51:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.2772277227722773) internal successors, (129), 101 states have internal predecessors, (129), 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 01:51:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 133 transitions. [2022-02-15 01:51:08,289 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 133 transitions. Word has length 37 [2022-02-15 01:51:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:08,290 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 133 transitions. [2022-02-15 01:51:08,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 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 01:51:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 133 transitions. [2022-02-15 01:51:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:51:08,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:08,291 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:08,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 01:51:08,291 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:08,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1433557480, now seen corresponding path program 24 times [2022-02-15 01:51:08,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:08,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503965807] [2022-02-15 01:51:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:08,324 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 01:51:08,324 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:08,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:08,330 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 01:51:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:08,357 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 01:51:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:08,721 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:08,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503965807] [2022-02-15 01:51:08,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [503965807] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:08,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:08,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:51:08,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328744103] [2022-02-15 01:51:08,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:08,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:51:08,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:51:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:51:08,723 INFO L87 Difference]: Start difference. First operand 106 states and 133 transitions. Second operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 01:51:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:10,179 INFO L93 Difference]: Finished difference Result 191 states and 257 transitions. [2022-02-15 01:51:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:51:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 37 [2022-02-15 01:51:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:10,184 INFO L225 Difference]: With dead ends: 191 [2022-02-15 01:51:10,184 INFO L226 Difference]: Without dead ends: 185 [2022-02-15 01:51:10,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:51:10,185 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 125 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:10,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 67 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:51:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-02-15 01:51:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 115. [2022-02-15 01:51:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.2727272727272727) internal successors, (140), 110 states have internal predecessors, (140), 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 01:51:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2022-02-15 01:51:10,273 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 37 [2022-02-15 01:51:10,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:10,273 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2022-02-15 01:51:10,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 01:51:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2022-02-15 01:51:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 01:51:10,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:10,274 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:10,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 01:51:10,274 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1446410607, now seen corresponding path program 25 times [2022-02-15 01:51:10,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:10,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103498624] [2022-02-15 01:51:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:10,311 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 01:51:10,312 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:10,315 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 01:51:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:10,345 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 01:51:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:10,666 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:10,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103498624] [2022-02-15 01:51:10,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103498624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:10,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:10,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 01:51:10,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743215188] [2022-02-15 01:51:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:10,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 01:51:10,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 01:51:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:51:10,667 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 01:51:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:12,850 INFO L93 Difference]: Finished difference Result 264 states and 328 transitions. [2022-02-15 01:51:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 01:51:12,851 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 38 [2022-02-15 01:51:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:12,852 INFO L225 Difference]: With dead ends: 264 [2022-02-15 01:51:12,852 INFO L226 Difference]: Without dead ends: 146 [2022-02-15 01:51:12,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=290, Invalid=2680, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 01:51:12,853 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:12,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 94 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 01:51:12,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-02-15 01:51:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 109. [2022-02-15 01:51:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.2692307692307692) internal successors, (132), 104 states have internal predecessors, (132), 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 01:51:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2022-02-15 01:51:12,959 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 136 transitions. Word has length 38 [2022-02-15 01:51:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:12,959 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-02-15 01:51:12,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 01:51:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 136 transitions. [2022-02-15 01:51:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 01:51:12,960 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:12,960 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:12,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 01:51:12,960 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1373388512, now seen corresponding path program 26 times [2022-02-15 01:51:12,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:12,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104244494] [2022-02-15 01:51:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:12,987 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 01:51:12,988 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:12,991 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 01:51:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:13,004 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 01:51:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:13,661 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:13,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104244494] [2022-02-15 01:51:13,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [104244494] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:13,661 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:13,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:51:13,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144879701] [2022-02-15 01:51:13,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:13,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:51:13,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:51:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:51:13,662 INFO L87 Difference]: Start difference. First operand 109 states and 136 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 01:51:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:17,188 INFO L93 Difference]: Finished difference Result 228 states and 316 transitions. [2022-02-15 01:51:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:51:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 01:51:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:17,190 INFO L225 Difference]: With dead ends: 228 [2022-02-15 01:51:17,190 INFO L226 Difference]: Without dead ends: 222 [2022-02-15 01:51:17,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=507, Invalid=1845, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:51:17,191 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 198 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:17,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 52 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 01:51:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-15 01:51:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 120. [2022-02-15 01:51:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 115 states have internal predecessors, (147), 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 01:51:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2022-02-15 01:51:17,337 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 40 [2022-02-15 01:51:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:17,337 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2022-02-15 01:51:17,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 01:51:17,337 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2022-02-15 01:51:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 01:51:17,337 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:17,338 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:17,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 01:51:17,338 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1281562680, now seen corresponding path program 27 times [2022-02-15 01:51:17,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:17,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456063588] [2022-02-15 01:51:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:17,379 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 01:51:17,379 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:17,387 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 01:51:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:17,429 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 01:51:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:18,069 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:51:18,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456063588] [2022-02-15 01:51:18,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [456063588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:51:18,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:51:18,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:51:18,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954066082] [2022-02-15 01:51:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:51:18,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:51:18,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:51:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:51:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:51:18,071 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 01:51:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:51:25,447 INFO L93 Difference]: Finished difference Result 188 states and 231 transitions. [2022-02-15 01:51:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:51:25,449 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 41 [2022-02-15 01:51:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:51:25,450 INFO L225 Difference]: With dead ends: 188 [2022-02-15 01:51:25,450 INFO L226 Difference]: Without dead ends: 161 [2022-02-15 01:51:25,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=401, Invalid=2049, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 01:51:25,451 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:51:25,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 99 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 01:51:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-15 01:51:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 119. [2022-02-15 01:51:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 114 states have internal predecessors, (138), 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 01:51:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2022-02-15 01:51:25,553 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 41 [2022-02-15 01:51:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:51:25,554 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2022-02-15 01:51:25,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 01:51:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2022-02-15 01:51:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 01:51:25,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:51:25,554 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:51:25,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 01:51:25,554 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:51:25,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:51:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash -383612943, now seen corresponding path program 28 times [2022-02-15 01:51:25,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:51:25,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024828109] [2022-02-15 01:51:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:51:25,592 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 01:51:25,593 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:51:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:51:25,599 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 01:51:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:25,625 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_35.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:51:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:51:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:51:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:51:46,310 WARN L228 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:52:09,267 WARN L228 SmtUtils]: Spent 14.27s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:52:35,158 WARN L228 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:52:35,159 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:35,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024828109] [2022-02-15 01:52:35,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1024828109] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:35,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:35,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:52:35,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553327645] [2022-02-15 01:52:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:35,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:52:35,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:52:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=475, Unknown=1, NotChecked=0, Total=552 [2022-02-15 01:52:35,160 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 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 01:52:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:36,185 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2022-02-15 01:52:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:52:36,186 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 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 01:52:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:36,187 INFO L225 Difference]: With dead ends: 196 [2022-02-15 01:52:36,187 INFO L226 Difference]: Without dead ends: 183 [2022-02-15 01:52:36,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 69.9s TimeCoverageRelationStatistics Valid=129, Invalid=1130, Unknown=1, NotChecked=0, Total=1260 [2022-02-15 01:52:36,188 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:36,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 113 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 484 Invalid, 0 Unknown, 40 Unchecked, 0.3s Time] [2022-02-15 01:52:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-15 01:52:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 130. [2022-02-15 01:52:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.264) internal successors, (158), 125 states have internal predecessors, (158), 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 01:52:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2022-02-15 01:52:36,296 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 42 [2022-02-15 01:52:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:36,296 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2022-02-15 01:52:36,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 20 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 01:52:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2022-02-15 01:52:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 01:52:36,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:36,297 INFO L514 BasicCegarLoop]: trace histogram [13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:36,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 01:52:36,297 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 724405425, now seen corresponding path program 29 times [2022-02-15 01:52:36,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:36,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573149275] [2022-02-15 01:52:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:36,339 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 01:52:36,339 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:36,343 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 01:52:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:36,360 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 01:52:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:37,141 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:37,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573149275] [2022-02-15 01:52:37,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1573149275] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:37,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:37,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:52:37,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027737779] [2022-02-15 01:52:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:37,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:52:37,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:52:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:52:37,142 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 01:52:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:40,648 INFO L93 Difference]: Finished difference Result 256 states and 345 transitions. [2022-02-15 01:52:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:52:40,649 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 42 [2022-02-15 01:52:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:40,650 INFO L225 Difference]: With dead ends: 256 [2022-02-15 01:52:40,650 INFO L226 Difference]: Without dead ends: 250 [2022-02-15 01:52:40,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=531, Invalid=2019, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:52:40,651 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 148 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:40,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 75 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 01:52:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-15 01:52:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 140. [2022-02-15 01:52:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.2592592592592593) internal successors, (170), 135 states have internal predecessors, (170), 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 01:52:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2022-02-15 01:52:40,826 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 42 [2022-02-15 01:52:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:40,827 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2022-02-15 01:52:40,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 01:52:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2022-02-15 01:52:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 01:52:40,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:40,828 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:40,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 01:52:40,828 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -464449704, now seen corresponding path program 30 times [2022-02-15 01:52:40,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:40,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226773863] [2022-02-15 01:52:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:40,868 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 01:52:40,868 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:40,871 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 01:52:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:40,897 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 01:52:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:41,478 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:41,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226773863] [2022-02-15 01:52:41,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [226773863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:41,479 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:41,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:52:41,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814896076] [2022-02-15 01:52:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:41,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:52:41,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:52:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:52:41,480 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 01:52:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:47,107 INFO L93 Difference]: Finished difference Result 317 states and 391 transitions. [2022-02-15 01:52:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 01:52:47,107 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 01:52:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:47,109 INFO L225 Difference]: With dead ends: 317 [2022-02-15 01:52:47,109 INFO L226 Difference]: Without dead ends: 182 [2022-02-15 01:52:47,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=352, Invalid=3308, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 01:52:47,111 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 110 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 01:52:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-15 01:52:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 132. [2022-02-15 01:52:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 127 states have internal predecessors, (160), 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 01:52:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2022-02-15 01:52:47,239 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 43 [2022-02-15 01:52:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:47,239 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2022-02-15 01:52:47,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 01:52:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2022-02-15 01:52:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-15 01:52:47,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:47,240 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:47,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 01:52:47,240 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1186461010, now seen corresponding path program 31 times [2022-02-15 01:52:47,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:47,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214360755] [2022-02-15 01:52:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:47,276 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 01:52:47,276 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:47,280 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 01:52:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:47,295 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 01:52:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:48,381 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:48,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214360755] [2022-02-15 01:52:48,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [214360755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:48,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:48,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:52:48,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065888607] [2022-02-15 01:52:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:48,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:52:48,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:52:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:52:48,383 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 01:52:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:52:52,407 INFO L93 Difference]: Finished difference Result 278 states and 380 transitions. [2022-02-15 01:52:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:52:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 01:52:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:52:52,409 INFO L225 Difference]: With dead ends: 278 [2022-02-15 01:52:52,409 INFO L226 Difference]: Without dead ends: 272 [2022-02-15 01:52:52,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=651, Invalid=2429, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 01:52:52,410 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 298 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:52:52,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 45 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 01:52:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-15 01:52:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 143. [2022-02-15 01:52:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.2608695652173914) internal successors, (174), 138 states have internal predecessors, (174), 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 01:52:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 178 transitions. [2022-02-15 01:52:52,615 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 178 transitions. Word has length 44 [2022-02-15 01:52:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:52:52,615 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 178 transitions. [2022-02-15 01:52:52,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 01:52:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 178 transitions. [2022-02-15 01:52:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 01:52:52,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:52:52,616 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:52:52,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 01:52:52,616 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:52:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:52:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1828750298, now seen corresponding path program 32 times [2022-02-15 01:52:52,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:52:52,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189453974] [2022-02-15 01:52:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:52:52,654 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 01:52:52,654 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:52:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:52:52,658 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 01:52:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:52,691 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_39.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:52:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:52:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:52:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:52:53,737 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:52:53,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189453974] [2022-02-15 01:52:53,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1189453974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:52:53,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:52:53,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:52:53,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417464570] [2022-02-15 01:52:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:52:53,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:52:53,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:52:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:52:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:52:53,738 INFO L87 Difference]: Start difference. First operand 143 states and 178 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 01:53:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:53:09,521 INFO L93 Difference]: Finished difference Result 228 states and 277 transitions. [2022-02-15 01:53:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 01:53:09,522 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 45 [2022-02-15 01:53:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:53:09,522 INFO L225 Difference]: With dead ends: 228 [2022-02-15 01:53:09,523 INFO L226 Difference]: Without dead ends: 198 [2022-02-15 01:53:09,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=510, Invalid=2682, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 01:53:09,524 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:53:09,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 114 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 01:53:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-02-15 01:53:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 142. [2022-02-15 01:53:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.197080291970803) internal successors, (164), 137 states have internal predecessors, (164), 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 01:53:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2022-02-15 01:53:09,706 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 45 [2022-02-15 01:53:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:53:09,706 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2022-02-15 01:53:09,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 01:53:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2022-02-15 01:53:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 01:53:09,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:53:09,711 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:53:09,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 01:53:09,712 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:53:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:53:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 175241857, now seen corresponding path program 33 times [2022-02-15 01:53:09,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:53:09,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134144814] [2022-02-15 01:53:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:53:09,747 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 01:53:09,748 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:53:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:53:09,751 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 01:53:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:09,782 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_40.4))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:53:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:53:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:53:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:53:51,473 WARN L228 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:54:14,789 WARN L228 SmtUtils]: Spent 10.67s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:54:49,473 WARN L228 SmtUtils]: Spent 11.16s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:54:49,474 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:54:49,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134144814] [2022-02-15 01:54:49,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1134144814] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:54:49,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:54:49,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:54:49,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635876667] [2022-02-15 01:54:49,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:54:49,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:54:49,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:54:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:54:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1123, Unknown=12, NotChecked=0, Total=1260 [2022-02-15 01:54:49,476 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand has 34 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 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 01:54:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:54:51,862 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2022-02-15 01:54:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 01:54:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 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 01:54:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:54:51,863 INFO L225 Difference]: With dead ends: 169 [2022-02-15 01:54:51,863 INFO L226 Difference]: Without dead ends: 133 [2022-02-15 01:54:51,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 100.7s TimeCoverageRelationStatistics Valid=318, Invalid=3960, Unknown=12, NotChecked=0, Total=4290 [2022-02-15 01:54:51,865 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:54:51,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 117 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 660 Invalid, 0 Unknown, 34 Unchecked, 0.9s Time] [2022-02-15 01:54:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-15 01:54:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-02-15 01:54:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.1953125) internal successors, (153), 128 states have internal predecessors, (153), 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 01:54:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2022-02-15 01:54:52,070 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2022-02-15 01:54:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:54:52,070 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2022-02-15 01:54:52,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 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 01:54:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2022-02-15 01:54:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 01:54:52,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:54:52,071 INFO L514 BasicCegarLoop]: trace histogram [15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:54:52,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 01:54:52,072 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:54:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:54:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -378430047, now seen corresponding path program 34 times [2022-02-15 01:54:52,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:54:52,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737855204] [2022-02-15 01:54:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:54:52,103 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 01:54:52,103 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:54:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:54:52,108 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 01:54:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:52,131 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 01:54:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:54:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:54:53,278 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:54:53,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737855204] [2022-02-15 01:54:53,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [737855204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:54:53,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:54:53,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 01:54:53,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25083502] [2022-02-15 01:54:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:54:53,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 01:54:53,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:54:53,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 01:54:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:54:53,279 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 01:54:57,864 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 01:54:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:54:59,233 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2022-02-15 01:54:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 01:54:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 46 [2022-02-15 01:54:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:54:59,234 INFO L225 Difference]: With dead ends: 231 [2022-02-15 01:54:59,234 INFO L226 Difference]: Without dead ends: 225 [2022-02-15 01:54:59,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=566, Invalid=1984, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:54:59,238 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 188 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 210 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:54:59,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 70 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1030 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-02-15 01:54:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-15 01:54:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 143. [2022-02-15 01:54:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.1884057971014492) internal successors, (164), 138 states have internal predecessors, (164), 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 01:54:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2022-02-15 01:54:59,391 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 46 [2022-02-15 01:54:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:54:59,393 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2022-02-15 01:54:59,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 01:54:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2022-02-15 01:54:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 01:54:59,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:54:59,393 INFO L514 BasicCegarLoop]: trace histogram [16, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:54:59,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 01:54:59,394 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:54:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:54:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1815265257, now seen corresponding path program 35 times [2022-02-15 01:54:59,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:54:59,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155280495] [2022-02-15 01:54:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:54:59,467 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 01:54:59,467 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:54:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:54:59,471 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 01:54:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:59,488 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 01:54:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:54:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:54:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:55:00,855 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:00,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155280495] [2022-02-15 01:55:00,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155280495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:00,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:00,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:55:00,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356249461] [2022-02-15 01:55:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:00,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:55:00,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:55:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:55:00,857 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 01:55:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:05,820 INFO L93 Difference]: Finished difference Result 254 states and 314 transitions. [2022-02-15 01:55:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 01:55:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 47 [2022-02-15 01:55:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:05,821 INFO L225 Difference]: With dead ends: 254 [2022-02-15 01:55:05,821 INFO L226 Difference]: Without dead ends: 248 [2022-02-15 01:55:05,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=705, Invalid=2835, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 01:55:05,822 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 179 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:05,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 68 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 01:55:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-15 01:55:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 155. [2022-02-15 01:55:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 150 states have internal predecessors, (179), 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 01:55:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2022-02-15 01:55:05,984 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 47 [2022-02-15 01:55:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:05,985 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2022-02-15 01:55:05,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 01:55:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2022-02-15 01:55:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 01:55:05,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:05,985 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:05,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 01:55:05,986 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -420193183, now seen corresponding path program 36 times [2022-02-15 01:55:05,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:05,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108759190] [2022-02-15 01:55:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:06,015 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 01:55:06,015 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:06,018 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 01:55:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:06,045 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 01:55:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:55:07,351 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:55:07,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108759190] [2022-02-15 01:55:07,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [108759190] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:55:07,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:55:07,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:55:07,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139705129] [2022-02-15 01:55:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:55:07,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:55:07,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:55:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:55:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:55:07,352 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 01:55:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:55:32,130 INFO L93 Difference]: Finished difference Result 272 states and 319 transitions. [2022-02-15 01:55:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 01:55:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 48 [2022-02-15 01:55:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:55:32,131 INFO L225 Difference]: With dead ends: 272 [2022-02-15 01:55:32,132 INFO L226 Difference]: Without dead ends: 248 [2022-02-15 01:55:32,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=745, Invalid=4224, Unknown=1, NotChecked=0, Total=4970 [2022-02-15 01:55:32,132 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 97 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:55:32,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 117 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-02-15 01:55:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-15 01:55:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 165. [2022-02-15 01:55:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.18125) internal successors, (189), 160 states have internal predecessors, (189), 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 01:55:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 193 transitions. [2022-02-15 01:55:32,378 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 193 transitions. Word has length 48 [2022-02-15 01:55:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:55:32,379 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 193 transitions. [2022-02-15 01:55:32,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 01:55:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 193 transitions. [2022-02-15 01:55:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:55:32,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:55:32,380 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:55:32,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 01:55:32,380 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:55:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:55:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 749002920, now seen corresponding path program 37 times [2022-02-15 01:55:32,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:55:32,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044481306] [2022-02-15 01:55:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:55:32,405 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 01:55:32,405 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:55:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:55:32,409 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 01:55:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:32,451 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_44.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:55:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:55:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:55:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:56:26,740 WARN L228 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:57:00,670 WARN L228 SmtUtils]: Spent 12.13s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:57:00,671 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:00,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044481306] [2022-02-15 01:57:00,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044481306] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:00,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:00,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:57:00,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496851762] [2022-02-15 01:57:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:00,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:57:00,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:57:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1128, Unknown=6, NotChecked=0, Total=1260 [2022-02-15 01:57:00,672 INFO L87 Difference]: Start difference. First operand 165 states and 193 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 32 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 01:57:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:02,240 INFO L93 Difference]: Finished difference Result 280 states and 327 transitions. [2022-02-15 01:57:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 01:57:02,241 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 32 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-02-15 01:57:02,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:02,242 INFO L225 Difference]: With dead ends: 280 [2022-02-15 01:57:02,242 INFO L226 Difference]: Without dead ends: 265 [2022-02-15 01:57:02,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 88.4s TimeCoverageRelationStatistics Valid=196, Invalid=2248, Unknown=6, NotChecked=0, Total=2450 [2022-02-15 01:57:02,242 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 43 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:02,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 132 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 805 Invalid, 0 Unknown, 95 Unchecked, 0.5s Time] [2022-02-15 01:57:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-02-15 01:57:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 178. [2022-02-15 01:57:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.23121387283237) internal successors, (213), 173 states have internal predecessors, (213), 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 01:57:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2022-02-15 01:57:02,506 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 49 [2022-02-15 01:57:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:02,506 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2022-02-15 01:57:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 32 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 01:57:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2022-02-15 01:57:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:57:02,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:02,507 INFO L514 BasicCegarLoop]: trace histogram [17, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:02,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 01:57:02,507 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1980280408, now seen corresponding path program 38 times [2022-02-15 01:57:02,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:02,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292279093] [2022-02-15 01:57:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:02,539 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 01:57:02,539 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:02,543 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 01:57:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:02,562 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 01:57:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:03,946 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:03,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292279093] [2022-02-15 01:57:03,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1292279093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:03,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:03,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:57:03,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922533773] [2022-02-15 01:57:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:03,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:57:03,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:57:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:57:03,948 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:11,696 INFO L93 Difference]: Finished difference Result 344 states and 455 transitions. [2022-02-15 01:57:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 01:57:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 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 49 [2022-02-15 01:57:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:11,698 INFO L225 Difference]: With dead ends: 344 [2022-02-15 01:57:11,698 INFO L226 Difference]: Without dead ends: 338 [2022-02-15 01:57:11,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=732, Invalid=3049, Unknown=1, NotChecked=0, Total=3782 [2022-02-15 01:57:11,699 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 215 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:11,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 71 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 01:57:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-02-15 01:57:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 190. [2022-02-15 01:57:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.227027027027027) internal successors, (227), 185 states have internal predecessors, (227), 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 01:57:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 231 transitions. [2022-02-15 01:57:12,027 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 231 transitions. Word has length 49 [2022-02-15 01:57:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:12,027 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 231 transitions. [2022-02-15 01:57:12,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 231 transitions. [2022-02-15 01:57:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 01:57:12,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:12,028 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:12,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 01:57:12,028 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1660623551, now seen corresponding path program 39 times [2022-02-15 01:57:12,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:12,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141333725] [2022-02-15 01:57:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:12,090 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 01:57:12,090 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:12,094 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 01:57:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:12,147 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_46.2))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:57:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:13,636 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:13,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141333725] [2022-02-15 01:57:13,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141333725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:13,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:13,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 01:57:13,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143076310] [2022-02-15 01:57:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:13,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 01:57:13,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 01:57:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:57:13,638 INFO L87 Difference]: Start difference. First operand 190 states and 231 transitions. Second operand has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 01:57:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:29,082 INFO L93 Difference]: Finished difference Result 459 states and 550 transitions. [2022-02-15 01:57:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 01:57:29,084 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 50 [2022-02-15 01:57:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:29,085 INFO L225 Difference]: With dead ends: 459 [2022-02-15 01:57:29,085 INFO L226 Difference]: Without dead ends: 263 [2022-02-15 01:57:29,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=529, Invalid=6113, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 01:57:29,086 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:29,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 132 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-15 01:57:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-02-15 01:57:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 181. [2022-02-15 01:57:29,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.2272727272727273) internal successors, (216), 176 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2022-02-15 01:57:29,383 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 50 [2022-02-15 01:57:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:29,383 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2022-02-15 01:57:29,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 01:57:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2022-02-15 01:57:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 01:57:29,384 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:29,384 INFO L514 BasicCegarLoop]: trace histogram [18, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:29,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 01:57:29,384 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -563208622, now seen corresponding path program 40 times [2022-02-15 01:57:29,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:29,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995867665] [2022-02-15 01:57:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:29,429 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 01:57:29,430 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:29,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:29,434 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 01:57:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:29,461 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 01:57:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:33,660 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:33,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995867665] [2022-02-15 01:57:33,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1995867665] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:33,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:33,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:57:33,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608393807] [2022-02-15 01:57:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:33,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:57:33,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:57:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:57:33,661 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 01:57:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:57:44,462 INFO L93 Difference]: Finished difference Result 393 states and 532 transitions. [2022-02-15 01:57:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 01:57:44,463 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 52 [2022-02-15 01:57:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:57:44,465 INFO L225 Difference]: With dead ends: 393 [2022-02-15 01:57:44,465 INFO L226 Difference]: Without dead ends: 387 [2022-02-15 01:57:44,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=993, Invalid=3837, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 01:57:44,467 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 266 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:57:44,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 56 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-15 01:57:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-02-15 01:57:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 195. [2022-02-15 01:57:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.231578947368421) internal successors, (234), 190 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:57:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 238 transitions. [2022-02-15 01:57:44,713 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 238 transitions. Word has length 52 [2022-02-15 01:57:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:57:44,714 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 238 transitions. [2022-02-15 01:57:44,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 01:57:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 238 transitions. [2022-02-15 01:57:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:57:44,714 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:57:44,714 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:57:44,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 01:57:44,716 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:57:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:57:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1536665754, now seen corresponding path program 41 times [2022-02-15 01:57:44,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:57:44,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415884038] [2022-02-15 01:57:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:57:44,742 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 01:57:44,743 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:57:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:57:44,746 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 01:57:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:44,788 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 01:57:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:57:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:57:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:57:49,567 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:57:49,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415884038] [2022-02-15 01:57:49,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415884038] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:57:49,567 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:57:49,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:57:49,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528776904] [2022-02-15 01:57:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:57:49,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:57:49,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:57:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:57:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:57:49,568 INFO L87 Difference]: Start difference. First operand 195 states and 238 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 01:58:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:58:39,132 INFO L93 Difference]: Finished difference Result 320 states and 381 transitions. [2022-02-15 01:58:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 01:58:39,133 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 01:58:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:58:39,134 INFO L225 Difference]: With dead ends: 320 [2022-02-15 01:58:39,134 INFO L226 Difference]: Without dead ends: 284 [2022-02-15 01:58:39,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=767, Invalid=4203, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 01:58:39,135 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 98 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:58:39,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 124 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-02-15 01:58:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-15 01:58:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 194. [2022-02-15 01:58:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.1746031746031746) internal successors, (222), 189 states have internal predecessors, (222), 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 01:58:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2022-02-15 01:58:39,466 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 53 [2022-02-15 01:58:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:58:39,466 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2022-02-15 01:58:39,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 01:58:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2022-02-15 01:58:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 01:58:39,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:58:39,467 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:58:39,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 01:58:39,467 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:58:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:58:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash 396126081, now seen corresponding path program 42 times [2022-02-15 01:58:39,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:58:39,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451304292] [2022-02-15 01:58:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:58:39,525 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 01:58:39,525 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:58:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:58:39,530 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 01:58:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:39,653 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_49.3))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-15 01:58:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:58:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:58:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:59:22,719 WARN L228 SmtUtils]: Spent 11.31s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:59:53,462 WARN L228 SmtUtils]: Spent 11.40s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 02:00:26,672 WARN L228 SmtUtils]: Spent 13.40s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 02:01:10,718 WARN L228 SmtUtils]: Spent 23.33s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 02:01:12,734 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 9 c_main_~x~0))) (and (< 0 (mod (+ c_main_~x~0 1) 4294967296)) (< 0 (mod (+ 3 c_main_~x~0) 4294967296)) (< 0 (mod .cse0 4294967296)) (< 0 (mod (+ 5 c_main_~x~0) 4294967296)) (< 0 (mod (+ 6 c_main_~x~0) 4294967296)) (< 0 (mod (+ 4 c_main_~x~0) 4294967296)) (< 0 (mod (+ 2 c_main_~x~0) 4294967296)) (< 0 (mod (+ 8 c_main_~x~0) 4294967296)) (< 0 (mod (+ 7 c_main_~x~0) 4294967296)) (or (and (< 9 c_main_~y~0) (= (+ c_main_~x~0 c_main_~y~0) c_main_~n~0) (< 0 (mod c_main_~n~0 4294967296)) (forall ((v_it_49 Int)) (or (not (<= 1 v_it_49)) (not (<= (+ v_it_49 10) c_main_~y~0)) (< 0 (mod (+ (* 4294967295 v_it_49) c_main_~n~0) 4294967296))))) (and (= (+ (- 9) c_main_~y~0) 0) (= .cse0 c_main_~n~0))))) is different from false [2022-02-15 02:01:12,736 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:12,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451304292] [2022-02-15 02:01:12,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451304292] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:12,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:12,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:01:12,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63933756] [2022-02-15 02:01:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:12,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:01:12,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:01:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=701, Unknown=9, NotChecked=54, Total=870 [2022-02-15 02:01:12,738 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 26 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 02:01:17,138 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 c_main_~x~0)) (.cse1 (= (+ c_main_~x~0 c_main_~y~0) c_main_~n~0)) (.cse2 (< 0 (mod c_main_~n~0 4294967296))) (.cse3 (+ 9 c_main_~x~0))) (and (or (and (= 0 (+ c_main_~y~0 (- 8))) (= .cse0 c_main_~n~0)) (and .cse1 .cse2 (forall ((v_it_49 Int)) (or (not (<= 1 v_it_49)) (not (<= (+ 9 v_it_49) c_main_~y~0)) (< 0 (mod (+ (* 4294967295 v_it_49) c_main_~n~0) 4294967296)))) (< 8 c_main_~y~0))) (< 0 (mod (+ c_main_~x~0 1) 4294967296)) (< 0 (mod (+ 3 c_main_~x~0) 4294967296)) (< 0 (mod .cse3 4294967296)) (< 0 (mod (+ 5 c_main_~x~0) 4294967296)) (< 0 (mod (+ 6 c_main_~x~0) 4294967296)) (< 0 (mod (+ 4 c_main_~x~0) 4294967296)) (< 0 (mod (+ 2 c_main_~x~0) 4294967296)) (< 0 (mod .cse0 4294967296)) (< 0 (mod (+ 7 c_main_~x~0) 4294967296)) (or (and (< 9 c_main_~y~0) .cse1 .cse2 (forall ((v_it_49 Int)) (or (not (<= 1 v_it_49)) (not (<= (+ v_it_49 10) c_main_~y~0)) (< 0 (mod (+ (* 4294967295 v_it_49) c_main_~n~0) 4294967296))))) (and (= (+ (- 9) c_main_~y~0) 0) (= .cse3 c_main_~n~0))))) is different from false [2022-02-15 02:01:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:18,562 INFO L93 Difference]: Finished difference Result 331 states and 384 transitions. [2022-02-15 02:01:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:01:18,563 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 26 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 02:01:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:18,566 INFO L225 Difference]: With dead ends: 331 [2022-02-15 02:01:18,566 INFO L226 Difference]: Without dead ends: 315 [2022-02-15 02:01:18,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 157.1s TimeCoverageRelationStatistics Valid=173, Invalid=1717, Unknown=10, NotChecked=170, Total=2070 [2022-02-15 02:01:18,576 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:18,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 123 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 784 Invalid, 0 Unknown, 73 Unchecked, 0.4s Time] [2022-02-15 02:01:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-02-15 02:01:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 208. [2022-02-15 02:01:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.2216748768472907) internal successors, (248), 203 states have internal predecessors, (248), 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 02:01:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 252 transitions. [2022-02-15 02:01:18,856 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 252 transitions. Word has length 54 [2022-02-15 02:01:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:18,857 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 252 transitions. [2022-02-15 02:01:18,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 26 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 02:01:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 252 transitions. [2022-02-15 02:01:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 02:01:18,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:18,858 INFO L514 BasicCegarLoop]: trace histogram [19, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:18,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:01:18,858 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:18,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -549300511, now seen corresponding path program 43 times [2022-02-15 02:01:18,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:18,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848714295] [2022-02-15 02:01:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:18,897 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 02:01:18,897 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:01:18,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:18,900 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 02:01:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:18,923 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 02:01:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:01:22,818 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:22,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848714295] [2022-02-15 02:01:22,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [848714295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:22,818 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:22,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:01:22,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739817721] [2022-02-15 02:01:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:22,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:01:22,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:01:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:01:22,819 INFO L87 Difference]: Start difference. First operand 208 states and 252 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 02:01:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:01:36,307 INFO L93 Difference]: Finished difference Result 430 states and 570 transitions. [2022-02-15 02:01:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:01:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 54 [2022-02-15 02:01:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:01:36,309 INFO L225 Difference]: With dead ends: 430 [2022-02-15 02:01:36,309 INFO L226 Difference]: Without dead ends: 424 [2022-02-15 02:01:36,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1026, Invalid=4086, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 02:01:36,310 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 267 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:01:36,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 69 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 02:01:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-02-15 02:01:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 221. [2022-02-15 02:01:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.2175925925925926) internal successors, (263), 216 states have internal predecessors, (263), 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 02:01:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 267 transitions. [2022-02-15 02:01:36,755 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 267 transitions. Word has length 54 [2022-02-15 02:01:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:01:36,756 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 267 transitions. [2022-02-15 02:01:36,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 02:01:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 267 transitions. [2022-02-15 02:01:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 02:01:36,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:01:36,756 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:01:36,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:01:36,757 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:01:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:01:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash 183130822, now seen corresponding path program 44 times [2022-02-15 02:01:36,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:01:36,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495478098] [2022-02-15 02:01:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:01:36,791 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 02:01:36,792 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:01:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:01:36,796 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 02:01:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:36,865 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 02:01:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:01:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:01:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:01:41,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:01:41,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495478098] [2022-02-15 02:01:41,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [495478098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:01:41,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:01:41,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:01:41,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406748053] [2022-02-15 02:01:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:01:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:01:41,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:01:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:01:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:01:41,629 INFO L87 Difference]: Start difference. First operand 221 states and 267 transitions. Second operand has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 02:02:05,149 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 02:02:06,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:02:14,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 02:02:18,811 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 02:02:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:02:49,847 INFO L93 Difference]: Finished difference Result 691 states and 826 transitions. [2022-02-15 02:02:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 02:02:49,849 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 02:02:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:02:49,851 INFO L225 Difference]: With dead ends: 691 [2022-02-15 02:02:49,851 INFO L226 Difference]: Without dead ends: 475 [2022-02-15 02:02:49,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=755, Invalid=8364, Unknown=1, NotChecked=0, Total=9120 [2022-02-15 02:02:49,852 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 213 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:02:49,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 144 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1928 Invalid, 2 Unknown, 0 Unchecked, 30.6s Time] [2022-02-15 02:02:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-02-15 02:02:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 364. [2022-02-15 02:02:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 359 states have (on average 1.1838440111420614) internal successors, (425), 359 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:02:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 429 transitions. [2022-02-15 02:02:50,359 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 429 transitions. Word has length 55 [2022-02-15 02:02:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:02:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 429 transitions. [2022-02-15 02:02:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 02:02:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 429 transitions. [2022-02-15 02:02:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:02:50,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:02:50,360 INFO L514 BasicCegarLoop]: trace histogram [20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:02:50,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:02:50,360 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:02:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:02:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1460362528, now seen corresponding path program 45 times [2022-02-15 02:02:50,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:02:50,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185843162] [2022-02-15 02:02:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:02:50,396 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 02:02:50,396 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:02:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:02:50,399 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 02:02:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:50,427 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 02:02:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:02:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:02:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:02:55,594 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:02:55,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185843162] [2022-02-15 02:02:55,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [185843162] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:02:55,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:02:55,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:02:55,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815589524] [2022-02-15 02:02:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:02:55,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:02:55,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:02:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:02:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:02:55,596 INFO L87 Difference]: Start difference. First operand 364 states and 429 transitions. Second operand has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 02:03:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:03:10,887 INFO L93 Difference]: Finished difference Result 735 states and 914 transitions. [2022-02-15 02:03:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:03:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 02:03:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:03:10,890 INFO L225 Difference]: With dead ends: 735 [2022-02-15 02:03:10,890 INFO L226 Difference]: Without dead ends: 729 [2022-02-15 02:03:10,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:03:10,891 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 327 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:03:10,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 69 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 02:03:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-02-15 02:03:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 391. [2022-02-15 02:03:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 386 states have (on average 1.1839378238341969) internal successors, (457), 386 states have internal predecessors, (457), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:03:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 461 transitions. [2022-02-15 02:03:11,649 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 461 transitions. Word has length 56 [2022-02-15 02:03:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:03:11,650 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 461 transitions. [2022-02-15 02:03:11,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 02:03:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 461 transitions. [2022-02-15 02:03:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 02:03:11,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:03:11,651 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:03:11,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 02:03:11,651 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:03:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:03:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1599513784, now seen corresponding path program 46 times [2022-02-15 02:03:11,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:03:11,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025408394] [2022-02-15 02:03:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:03:11,692 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 02:03:11,692 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:03:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:03:11,698 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 02:03:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:11,764 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 02:03:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:03:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:03:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.