/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:26:29,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:26:29,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:26:29,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:26:30,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 01:26:30,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 01:26:30,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 01:26:30,038 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 01:26:30,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:26:30,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:26:30,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:26:30,049 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:26:30,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:26:30,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:26:30,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:26:30,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:26:30,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:26:30,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:26:30,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:26:30,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:26:30,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:26:30,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:26:30,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:26:30,052 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:26:30,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:26:30,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:26:30,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:26:30,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:26:30,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:26:30,273 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:26:30,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_1-1.c [2022-02-15 01:26:30,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06dd6b5cb/544f5277172943eca89e707f0ac85011/FLAG8d3219ecf [2022-02-15 01:26:30,624 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:26:30,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_1-1.c [2022-02-15 01:26:30,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06dd6b5cb/544f5277172943eca89e707f0ac85011/FLAG8d3219ecf [2022-02-15 01:26:31,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06dd6b5cb/544f5277172943eca89e707f0ac85011 [2022-02-15 01:26:31,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:26:31,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:26:31,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:26:31,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:26:31,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:26:31,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33aa103b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31, skipping insertion in model container [2022-02-15 01:26:31,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:26:31,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:26:31,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_1-1.c[322,335] [2022-02-15 01:26:31,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:26:31,249 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:26:31,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_1-1.c[322,335] [2022-02-15 01:26:31,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:26:31,269 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:26:31,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31 WrapperNode [2022-02-15 01:26:31,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:26:31,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:26:31,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:26:31,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:26:31,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:26:31,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:26:31,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:26:31,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:26:31,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (1/1) ... [2022-02-15 01:26:31,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:26:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:26:31,340 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 01:26:31,376 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 01:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:26:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:26:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:26:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:26:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:26:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:26:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:26:31,432 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:26:31,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:26:31,509 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:26:31,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:26:31,513 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 01:26:31,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:26:31 BoogieIcfgContainer [2022-02-15 01:26:31,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:26:31,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:26:31,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:26:31,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:26:31,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:26:31" (1/3) ... [2022-02-15 01:26:31,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35981b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:26:31, skipping insertion in model container [2022-02-15 01:26:31,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:26:31" (2/3) ... [2022-02-15 01:26:31,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35981b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:26:31, skipping insertion in model container [2022-02-15 01:26:31,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:26:31" (3/3) ... [2022-02-15 01:26:31,521 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2022-02-15 01:26:31,524 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:26:31,524 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:26:31,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:26:31,565 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 01:26:31,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:26:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 01:26:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:26:31,581 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:31,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:31,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 491760044, now seen corresponding path program 1 times [2022-02-15 01:26:31,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:31,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847437652] [2022-02-15 01:26:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:31,640 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:26:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:31,762 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:31,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847437652] [2022-02-15 01:26:31,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1847437652] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:31,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:31,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 01:26:31,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52493865] [2022-02-15 01:26:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:31,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 01:26:31,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 01:26:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 01:26:31,808 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:31,854 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-02-15 01:26:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 01:26:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-15 01:26:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:31,865 INFO L225 Difference]: With dead ends: 30 [2022-02-15 01:26:31,866 INFO L226 Difference]: Without dead ends: 13 [2022-02-15 01:26:31,868 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 01:26:31,871 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 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 01:26:31,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:26:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-15 01:26:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-15 01:26:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-02-15 01:26:31,900 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-02-15 01:26:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:31,901 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-02-15 01:26:31,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-02-15 01:26:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:26:31,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:31,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:26:31,903 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 482524834, now seen corresponding path program 1 times [2022-02-15 01:26:31,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:31,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107574301] [2022-02-15 01:26:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:31,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:31,908 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:26:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:32,004 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:32,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107574301] [2022-02-15 01:26:32,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1107574301] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:32,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:32,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 01:26:32,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886377407] [2022-02-15 01:26:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:32,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 01:26:32,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 01:26:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 01:26:32,017 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:32,042 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-02-15 01:26:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 01:26:32,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-15 01:26:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:32,043 INFO L225 Difference]: With dead ends: 22 [2022-02-15 01:26:32,043 INFO L226 Difference]: Without dead ends: 15 [2022-02-15 01:26:32,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 01:26:32,044 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:32,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:26:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-15 01:26:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-15 01:26:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-02-15 01:26:32,049 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-02-15 01:26:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:32,049 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-02-15 01:26:32,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-02-15 01:26:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 01:26:32,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:32,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:32,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:26:32,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:32,051 INFO L85 PathProgramCache]: Analyzing trace with hash 925229631, now seen corresponding path program 1 times [2022-02-15 01:26:32,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:32,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420202313] [2022-02-15 01:26:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:32,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:32,142 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:26:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:32,364 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:32,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420202313] [2022-02-15 01:26:32,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1420202313] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:32,365 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:32,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 01:26:32,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142703630] [2022-02-15 01:26:32,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:32,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 01:26:32,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 01:26:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-15 01:26:32,367 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:32,446 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-02-15 01:26:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 01:26:32,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-15 01:26:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:32,447 INFO L225 Difference]: With dead ends: 22 [2022-02-15 01:26:32,447 INFO L226 Difference]: Without dead ends: 17 [2022-02-15 01:26:32,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 01:26:32,450 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:32,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 01:26:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-15 01:26:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-15 01:26:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-02-15 01:26:32,455 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2022-02-15 01:26:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:32,455 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-02-15 01:26:32,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-02-15 01:26:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 01:26:32,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:32,456 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:32,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 01:26:32,456 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1220035546, now seen corresponding path program 1 times [2022-02-15 01:26:32,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:32,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045567427] [2022-02-15 01:26:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:32,525 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:32,617 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:32,617 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:32,707 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:32,707 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:32,717 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_3.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_3.0) main_~x~0_6) 4294967296)) 268435455) 0)) [2022-02-15 01:26:32,720 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_3.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_3.0) main_~x~0_6) 4294967296)) 65520) 0) [2022-02-15 01:26:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:32,791 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_3.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_3.1) main_~x~0_6) 4294967296)) 268435455) 0)) [2022-02-15 01:26:32,792 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_3.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_3.1) main_~x~0_6) 4294967296)) 65520) 0) [2022-02-15 01:26:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:33,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:33,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045567427] [2022-02-15 01:26:33,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1045567427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:33,167 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:33,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 01:26:33,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037393036] [2022-02-15 01:26:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:33,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 01:26:33,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 01:26:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 01:26:33,168 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:33,357 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-02-15 01:26:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:26:33,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-15 01:26:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:33,358 INFO L225 Difference]: With dead ends: 31 [2022-02-15 01:26:33,358 INFO L226 Difference]: Without dead ends: 21 [2022-02-15 01:26:33,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:26:33,359 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:33,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:26:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-15 01:26:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-02-15 01:26:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-02-15 01:26:33,364 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-02-15 01:26:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:33,364 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-02-15 01:26:33,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-15 01:26:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 01:26:33,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:33,365 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:33,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 01:26:33,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1815013998, now seen corresponding path program 2 times [2022-02-15 01:26:33,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:33,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26682764] [2022-02-15 01:26:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:33,421 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:33,471 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:33,472 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:33,564 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:33,617 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:33,617 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:33,623 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_6.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_6.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:33,624 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_6.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_6.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:33,646 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_6.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_6.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:33,646 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_6.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_6.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:33,949 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:33,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26682764] [2022-02-15 01:26:33,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [26682764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:33,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:33,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 01:26:33,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112333311] [2022-02-15 01:26:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:33,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 01:26:33,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 01:26:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:26:33,951 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:34,102 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-02-15 01:26:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 01:26:34,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-15 01:26:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:34,103 INFO L225 Difference]: With dead ends: 30 [2022-02-15 01:26:34,103 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 01:26:34,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:26:34,104 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:34,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 38 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:26:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 01:26:34,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-15 01:26:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-02-15 01:26:34,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-02-15 01:26:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:34,112 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-02-15 01:26:34,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-02-15 01:26:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 01:26:34,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:34,114 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:34,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 01:26:34,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -205744403, now seen corresponding path program 3 times [2022-02-15 01:26:34,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:34,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468562361] [2022-02-15 01:26:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:34,159 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:34,209 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:34,209 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:34,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:34,364 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:34,364 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:34,370 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_10.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_10.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:34,370 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_10.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_10.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:34,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_10.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_10.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:34,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_10.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_10.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:34,953 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:34,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468562361] [2022-02-15 01:26:34,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [468562361] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:34,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:34,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:26:34,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766424314] [2022-02-15 01:26:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:34,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:26:34,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:34,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:26:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 01:26:34,955 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:35,194 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-02-15 01:26:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 01:26:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 01:26:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:35,196 INFO L225 Difference]: With dead ends: 32 [2022-02-15 01:26:35,196 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 01:26:35,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:26:35,197 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:35,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 38 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:26:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 01:26:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-15 01:26:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-02-15 01:26:35,202 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 21 [2022-02-15 01:26:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:35,202 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-02-15 01:26:35,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-02-15 01:26:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 01:26:35,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:35,203 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:35,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 01:26:35,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash 114109832, now seen corresponding path program 4 times [2022-02-15 01:26:35,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:35,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043394904] [2022-02-15 01:26:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:35,249 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:35,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:35,338 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:35,424 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:35,780 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:35,781 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:35,786 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_14.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_14.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:35,787 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_14.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_14.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:35,824 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_14.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_14.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:35,825 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_14.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_14.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:39,133 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:39,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043394904] [2022-02-15 01:26:39,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2043394904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:39,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:39,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 01:26:39,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477701846] [2022-02-15 01:26:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:39,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 01:26:39,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 01:26:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:26:39,134 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:39,788 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-15 01:26:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 01:26:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-15 01:26:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:39,789 INFO L225 Difference]: With dead ends: 34 [2022-02-15 01:26:39,789 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 01:26:39,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:26:39,789 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:39,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 53 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 01:26:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 01:26:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-15 01:26:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-15 01:26:39,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-02-15 01:26:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-15 01:26:39,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-15 01:26:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 01:26:39,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:39,797 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:39,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 01:26:39,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1743615645, now seen corresponding path program 5 times [2022-02-15 01:26:39,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:39,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119289720] [2022-02-15 01:26:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:39,878 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:39,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:39,956 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:40,273 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:40,365 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:40,366 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:40,370 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_18.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_18.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:40,371 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_18.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_18.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:40,397 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_18.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_18.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:40,397 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_18.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_18.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:43,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:43,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119289720] [2022-02-15 01:26:43,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1119289720] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:43,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:43,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 01:26:43,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905192917] [2022-02-15 01:26:43,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:43,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 01:26:43,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 01:26:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-15 01:26:43,633 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:44,461 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-02-15 01:26:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 01:26:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 01:26:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:44,461 INFO L225 Difference]: With dead ends: 36 [2022-02-15 01:26:44,462 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 01:26:44,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:26:44,462 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:44,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 48 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 01:26:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 01:26:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-15 01:26:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-15 01:26:44,485 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-02-15 01:26:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:44,485 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-15 01:26:44,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-15 01:26:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 01:26:44,486 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:44,486 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:44,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 01:26:44,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash -311403906, now seen corresponding path program 6 times [2022-02-15 01:26:44,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:44,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528433778] [2022-02-15 01:26:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:44,562 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:44,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:44,654 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:45,016 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:45,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:45,149 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:45,155 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_22.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_22.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:45,156 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_22.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_22.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:45,180 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_22.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_22.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:45,180 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_22.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_22.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:46,537 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:46,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528433778] [2022-02-15 01:26:46,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [528433778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:46,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:46,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 01:26:46,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968410578] [2022-02-15 01:26:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:46,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 01:26:46,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 01:26:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-02-15 01:26:46,539 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:47,583 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-02-15 01:26:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 01:26:47,583 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 01:26:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:47,584 INFO L225 Difference]: With dead ends: 38 [2022-02-15 01:26:47,584 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 01:26:47,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:26:47,585 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:47,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 48 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:26:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 01:26:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-15 01:26:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-15 01:26:47,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 27 [2022-02-15 01:26:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:47,591 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-15 01:26:47,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-15 01:26:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 01:26:47,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:47,591 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:47,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 01:26:47,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1654542553, now seen corresponding path program 7 times [2022-02-15 01:26:47,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:47,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214434755] [2022-02-15 01:26:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:47,667 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:47,766 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:47,766 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:47,859 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:47,973 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:47,973 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:47,979 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_26.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_26.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:47,979 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_26.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_26.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:47,993 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_26.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_26.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:47,993 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_26.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_26.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:49,361 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:49,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214434755] [2022-02-15 01:26:49,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1214434755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:49,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:49,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 01:26:49,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165138439] [2022-02-15 01:26:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:49,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 01:26:49,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 01:26:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:26:49,362 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:50,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:50,443 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-02-15 01:26:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 01:26:50,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 01:26:50,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:50,444 INFO L225 Difference]: With dead ends: 40 [2022-02-15 01:26:50,444 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 01:26:50,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:26:50,445 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:50,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 73 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 01:26:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 01:26:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-15 01:26:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-02-15 01:26:50,451 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2022-02-15 01:26:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:50,452 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-02-15 01:26:50,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-02-15 01:26:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 01:26:50,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:50,452 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:50,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 01:26:50,452 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1143479412, now seen corresponding path program 8 times [2022-02-15 01:26:50,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:50,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364962008] [2022-02-15 01:26:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:50,519 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:50,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:50,587 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:52,694 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:52,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:52,830 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:52,834 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_30.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_30.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:52,835 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_30.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_30.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:52,857 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_30.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_30.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:52,858 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_30.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_30.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:53,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:26:54,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:26:54,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364962008] [2022-02-15 01:26:54,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364962008] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:26:54,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:26:54,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 01:26:54,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616243151] [2022-02-15 01:26:54,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:26:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 01:26:54,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:26:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 01:26:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-15 01:26:54,657 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:26:56,119 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-02-15 01:26:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 01:26:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 01:26:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:26:56,122 INFO L225 Difference]: With dead ends: 42 [2022-02-15 01:26:56,122 INFO L226 Difference]: Without dead ends: 35 [2022-02-15 01:26:56,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:26:56,136 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:26:56,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 01:26:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-15 01:26:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-15 01:26:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-02-15 01:26:56,151 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 31 [2022-02-15 01:26:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:26:56,152 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-02-15 01:26:56,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:26:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-02-15 01:26:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 01:26:56,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:26:56,152 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:26:56,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 01:26:56,153 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:26:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:26:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -361927345, now seen corresponding path program 9 times [2022-02-15 01:26:56,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:26:56,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179668448] [2022-02-15 01:26:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:26:56,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:56,305 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:56,305 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:58,431 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:26:58,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:26:58,575 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:26:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:26:58,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_34.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_34.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:58,579 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_34.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_34.0)) 4294967296)) 65520) 0) [2022-02-15 01:26:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:58,603 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_34.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_34.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:26:58,603 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_34.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_34.1)) 4294967296)) 65520) 0) [2022-02-15 01:26:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:26:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:26:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:00,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:00,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179668448] [2022-02-15 01:27:00,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [179668448] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:00,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:00,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 01:27:00,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198437324] [2022-02-15 01:27:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:00,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 01:27:00,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 01:27:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-15 01:27:00,656 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:02,419 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-02-15 01:27:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 01:27:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-02-15 01:27:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:02,420 INFO L225 Difference]: With dead ends: 44 [2022-02-15 01:27:02,420 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 01:27:02,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:27:02,421 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:02,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 01:27:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 01:27:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-02-15 01:27:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-02-15 01:27:02,427 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 33 [2022-02-15 01:27:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:02,427 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-02-15 01:27:02,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-02-15 01:27:02,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 01:27:02,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:02,427 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:02,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 01:27:02,428 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 346157930, now seen corresponding path program 10 times [2022-02-15 01:27:02,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:02,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650625254] [2022-02-15 01:27:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:02,492 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:02,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:02,587 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:02,667 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:02,779 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:02,779 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:02,782 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_38.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_38.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:02,783 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_38.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_38.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:02,800 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_38.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_38.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:02,801 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_38.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_38.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:05,161 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:05,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650625254] [2022-02-15 01:27:05,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [650625254] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:05,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:05,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 01:27:05,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464276285] [2022-02-15 01:27:05,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:05,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 01:27:05,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 01:27:05,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-02-15 01:27:05,163 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:07,135 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-02-15 01:27:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 01:27:07,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-15 01:27:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:07,136 INFO L225 Difference]: With dead ends: 46 [2022-02-15 01:27:07,136 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 01:27:07,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:27:07,137 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:07,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 01:27:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 01:27:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-15 01:27:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-02-15 01:27:07,143 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2022-02-15 01:27:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-02-15 01:27:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-02-15 01:27:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 01:27:07,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:07,144 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:07,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 01:27:07,144 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2083692859, now seen corresponding path program 11 times [2022-02-15 01:27:07,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:07,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549870427] [2022-02-15 01:27:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:07,222 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:07,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:07,300 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:08,116 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:08,265 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:08,265 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:08,269 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_42.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_42.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:08,269 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_42.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_42.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:08,303 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_42.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_42.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:08,304 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_42.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_42.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:11,183 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:11,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549870427] [2022-02-15 01:27:11,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549870427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:11,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:11,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 01:27:11,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27007618] [2022-02-15 01:27:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:11,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 01:27:11,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:11,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 01:27:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-02-15 01:27:11,185 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:13,695 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-02-15 01:27:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 01:27:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-02-15 01:27:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:13,696 INFO L225 Difference]: With dead ends: 48 [2022-02-15 01:27:13,696 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 01:27:13,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:27:13,697 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:13,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 68 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 01:27:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 01:27:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-02-15 01:27:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-02-15 01:27:13,703 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 37 [2022-02-15 01:27:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:13,703 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-02-15 01:27:13,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-02-15 01:27:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 01:27:13,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:13,704 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:13,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 01:27:13,704 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash -708092064, now seen corresponding path program 12 times [2022-02-15 01:27:13,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:13,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301332300] [2022-02-15 01:27:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:13,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:13,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:13,877 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:13,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:14,112 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:14,113 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:14,117 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_46.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_46.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:14,117 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_46.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_46.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,128 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_46.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_46.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:14,128 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_46.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_46.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:17,057 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:17,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301332300] [2022-02-15 01:27:17,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [301332300] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:17,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:17,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 01:27:17,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148233984] [2022-02-15 01:27:17,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:17,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 01:27:17,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 01:27:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-02-15 01:27:17,059 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:19,833 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-02-15 01:27:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 01:27:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-02-15 01:27:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:19,834 INFO L225 Difference]: With dead ends: 50 [2022-02-15 01:27:19,834 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 01:27:19,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:27:19,835 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:19,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 53 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 01:27:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 01:27:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-15 01:27:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-02-15 01:27:19,841 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 39 [2022-02-15 01:27:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:19,841 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-02-15 01:27:19,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-02-15 01:27:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 01:27:19,842 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:19,842 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:19,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 01:27:19,842 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1605655237, now seen corresponding path program 13 times [2022-02-15 01:27:19,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:19,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714611455] [2022-02-15 01:27:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:19,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:19,995 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:19,996 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:20,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:20,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:20,285 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:20,303 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_50.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_50.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:20,304 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_50.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_50.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,314 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_50.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_50.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:20,315 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_50.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_50.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:23,568 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:23,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714611455] [2022-02-15 01:27:23,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1714611455] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:23,569 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:23,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 01:27:23,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607749498] [2022-02-15 01:27:23,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:23,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 01:27:23,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 01:27:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-02-15 01:27:23,570 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:26,406 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2022-02-15 01:27:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 01:27:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-02-15 01:27:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:26,406 INFO L225 Difference]: With dead ends: 52 [2022-02-15 01:27:26,406 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 01:27:26,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:27:26,407 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:26,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 53 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 01:27:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 01:27:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-15 01:27:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-02-15 01:27:26,414 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 41 [2022-02-15 01:27:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:26,414 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-02-15 01:27:26,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-02-15 01:27:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 01:27:26,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:26,415 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:26,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 01:27:26,415 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash -875437994, now seen corresponding path program 14 times [2022-02-15 01:27:26,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:26,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936925126] [2022-02-15 01:27:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:26,489 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:26,558 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:26,558 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:28,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:28,934 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:28,934 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:28,937 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_54.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_54.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:28,938 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_54.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_54.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:28,953 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_54.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_54.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:28,953 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_54.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_54.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:32,631 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:32,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936925126] [2022-02-15 01:27:32,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1936925126] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:32,631 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:32,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 01:27:32,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339957251] [2022-02-15 01:27:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:32,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 01:27:32,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 01:27:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-02-15 01:27:32,632 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:35,915 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-02-15 01:27:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 01:27:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-02-15 01:27:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:35,916 INFO L225 Difference]: With dead ends: 54 [2022-02-15 01:27:35,916 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 01:27:35,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:27:35,917 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:35,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 83 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 01:27:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 01:27:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-15 01:27:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2022-02-15 01:27:35,928 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 43 [2022-02-15 01:27:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:35,928 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2022-02-15 01:27:35,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-02-15 01:27:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 01:27:35,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:35,930 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:35,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 01:27:35,930 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash 783663281, now seen corresponding path program 15 times [2022-02-15 01:27:35,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:35,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096088015] [2022-02-15 01:27:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:35,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:36,066 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:36,066 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:36,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:36,287 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:36,287 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:36,295 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_58.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_58.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:36,295 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_58.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_58.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:36,320 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_58.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_58.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:36,321 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_58.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_58.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:43,157 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:43,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096088015] [2022-02-15 01:27:43,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2096088015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:43,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:43,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 01:27:43,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646840675] [2022-02-15 01:27:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:43,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 01:27:43,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 01:27:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-02-15 01:27:43,158 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:47,106 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-02-15 01:27:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 01:27:47,106 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-02-15 01:27:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:47,106 INFO L225 Difference]: With dead ends: 56 [2022-02-15 01:27:47,106 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 01:27:47,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 19 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=205, Invalid=1601, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 01:27:47,107 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:47,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 48 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 01:27:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 01:27:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-02-15 01:27:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-02-15 01:27:47,114 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 45 [2022-02-15 01:27:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-02-15 01:27:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-02-15 01:27:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 01:27:47,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:47,116 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:47,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 01:27:47,116 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1747121740, now seen corresponding path program 16 times [2022-02-15 01:27:47,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:47,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323777898] [2022-02-15 01:27:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:47,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:47,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:47,320 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:47,411 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:47,511 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:47,512 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:47,515 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_62.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_62.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:47,515 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_62.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_62.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,533 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_62.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_62.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:47,534 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_62.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_62.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:27:52,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:27:52,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323777898] [2022-02-15 01:27:52,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1323777898] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:27:52,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:27:52,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 01:27:52,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815783868] [2022-02-15 01:27:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:27:52,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 01:27:52,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:27:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 01:27:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-02-15 01:27:52,236 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:27:56,739 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-02-15 01:27:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 01:27:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-02-15 01:27:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:27:56,740 INFO L225 Difference]: With dead ends: 60 [2022-02-15 01:27:56,740 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 01:27:56,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=216, Invalid=1764, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 01:27:56,741 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 01:27:56,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 93 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 01:27:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 01:27:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-02-15 01:27:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-02-15 01:27:56,749 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 47 [2022-02-15 01:27:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:27:56,749 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-02-15 01:27:56,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:27:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-02-15 01:27:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 01:27:56,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:27:56,749 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:27:56,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 01:27:56,750 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:27:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:27:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash -82235097, now seen corresponding path program 17 times [2022-02-15 01:27:56,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:27:56,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546516311] [2022-02-15 01:27:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:27:56,833 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:56,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:56,933 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:57,036 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:27:57,160 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:27:57,160 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:27:57,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:27:57,164 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_66.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_66.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:57,164 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_66.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_66.0)) 4294967296)) 65520) 0) [2022-02-15 01:27:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,174 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_66.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_66.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:27:57,175 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_66.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_66.1)) 4294967296)) 65520) 0) [2022-02-15 01:27:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:27:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:27:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:28:00,896 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:00,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546516311] [2022-02-15 01:28:00,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [546516311] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:00,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:00,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 01:28:00,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95222134] [2022-02-15 01:28:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:00,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 01:28:00,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 01:28:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-02-15 01:28:00,898 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:04,494 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-02-15 01:28:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 01:28:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-02-15 01:28:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:04,494 INFO L225 Difference]: With dead ends: 60 [2022-02-15 01:28:04,495 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 01:28:04,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 21 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:28:04,496 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:04,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 01:28:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 01:28:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-02-15 01:28:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-02-15 01:28:04,503 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 49 [2022-02-15 01:28:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:04,503 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-02-15 01:28:04,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-02-15 01:28:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 01:28:04,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:04,504 INFO L514 BasicCegarLoop]: trace histogram [20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:28:04,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 01:28:04,504 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1452531390, now seen corresponding path program 18 times [2022-02-15 01:28:04,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:04,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160014134] [2022-02-15 01:28:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:04,589 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:04,669 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:04,670 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:09,004 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:09,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:09,239 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:09,242 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_70.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_70.0)) 4294967296)) 65520) 0) [2022-02-15 01:28:09,243 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_70.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_70.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:09,252 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_70.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_70.1)) 4294967296)) 65520) 0) [2022-02-15 01:28:09,252 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_70.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_70.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:28:14,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:14,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160014134] [2022-02-15 01:28:14,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160014134] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:14,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:14,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 01:28:14,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387885836] [2022-02-15 01:28:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:14,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 01:28:14,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 01:28:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2022-02-15 01:28:14,812 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:20,037 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2022-02-15 01:28:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 01:28:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-02-15 01:28:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:20,038 INFO L225 Difference]: With dead ends: 62 [2022-02-15 01:28:20,038 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 01:28:20,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 01:28:20,039 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:20,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 118 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 01:28:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 01:28:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-15 01:28:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-02-15 01:28:20,046 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 51 [2022-02-15 01:28:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:20,046 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-02-15 01:28:20,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-02-15 01:28:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 01:28:20,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:20,047 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:28:20,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 01:28:20,047 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:20,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 247690909, now seen corresponding path program 19 times [2022-02-15 01:28:20,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:20,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126491729] [2022-02-15 01:28:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:20,142 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:20,236 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:20,236 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:20,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:20,472 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:20,472 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:20,475 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_74.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_74.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:20,475 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_74.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_74.0)) 4294967296)) 65520) 0) [2022-02-15 01:28:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:20,484 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_74.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_74.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:20,484 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_74.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_74.1)) 4294967296)) 65520) 0) [2022-02-15 01:28:20,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:28:26,065 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:26,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126491729] [2022-02-15 01:28:26,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [126491729] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:26,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:26,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 01:28:26,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915677974] [2022-02-15 01:28:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:26,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 01:28:26,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 01:28:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-02-15 01:28:26,067 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:31,921 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-02-15 01:28:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 01:28:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-02-15 01:28:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:31,922 INFO L225 Difference]: With dead ends: 64 [2022-02-15 01:28:31,922 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 01:28:31,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 23 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:28:31,923 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:31,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 58 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-15 01:28:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 01:28:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-15 01:28:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-02-15 01:28:31,931 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 53 [2022-02-15 01:28:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:31,931 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-02-15 01:28:31,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-02-15 01:28:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 01:28:31,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:31,932 INFO L514 BasicCegarLoop]: trace histogram [22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:28:31,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 01:28:31,932 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2073747768, now seen corresponding path program 20 times [2022-02-15 01:28:31,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:31,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143511934] [2022-02-15 01:28:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:32,007 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:32,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:32,089 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:32,400 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:32,484 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:32,484 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:32,487 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_78.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_78.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:32,487 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_78.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_78.0)) 4294967296)) 65520) 0) [2022-02-15 01:28:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,495 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_78.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_78.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:32,495 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_78.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_78.1)) 4294967296)) 65520) 0) [2022-02-15 01:28:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:28:38,242 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:38,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143511934] [2022-02-15 01:28:38,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [143511934] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:38,242 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:38,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 01:28:38,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074752095] [2022-02-15 01:28:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:38,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 01:28:38,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 01:28:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-02-15 01:28:38,244 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:43,780 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-02-15 01:28:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 01:28:43,780 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-02-15 01:28:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:43,780 INFO L225 Difference]: With dead ends: 66 [2022-02-15 01:28:43,780 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 01:28:43,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 01:28:43,782 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:43,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 01:28:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 01:28:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-02-15 01:28:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-02-15 01:28:43,790 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 55 [2022-02-15 01:28:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:43,790 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-02-15 01:28:43,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-02-15 01:28:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 01:28:43,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:43,791 INFO L514 BasicCegarLoop]: trace histogram [23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:28:43,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 01:28:43,791 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 272765203, now seen corresponding path program 21 times [2022-02-15 01:28:43,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:43,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857864006] [2022-02-15 01:28:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:43,879 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:43,967 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:43,967 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:44,058 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:44,167 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:44,167 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:44,170 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_82.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_82.0)) 4294967296)) 65520) 0) [2022-02-15 01:28:44,171 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_82.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_82.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,179 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_82.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_82.1)) 4294967296)) 65520) 0) [2022-02-15 01:28:44,180 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_82.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_82.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:28:51,132 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:28:51,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857864006] [2022-02-15 01:28:51,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [857864006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:28:51,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:28:51,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 01:28:51,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163540806] [2022-02-15 01:28:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:28:51,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 01:28:51,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:28:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 01:28:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2022-02-15 01:28:51,134 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:28:57,869 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-02-15 01:28:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 01:28:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-02-15 01:28:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:28:57,870 INFO L225 Difference]: With dead ends: 68 [2022-02-15 01:28:57,870 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 01:28:57,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 25 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 01:28:57,871 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:28:57,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-02-15 01:28:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 01:28:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-02-15 01:28:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-02-15 01:28:57,879 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 57 [2022-02-15 01:28:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:28:57,879 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-02-15 01:28:57,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:28:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-02-15 01:28:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 01:28:57,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:28:57,880 INFO L514 BasicCegarLoop]: trace histogram [24, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:28:57,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 01:28:57,880 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:28:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:28:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 400340526, now seen corresponding path program 22 times [2022-02-15 01:28:57,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:28:57,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497960863] [2022-02-15 01:28:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:28:57,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:58,043 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:58,043 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:58,172 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:28:58,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:28:58,323 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:28:58,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:28:58,329 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_86.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_86.0)) 4294967296)) 65520) 0) [2022-02-15 01:28:58,329 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_86.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_86.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:58,336 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_86.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_86.1)) 4294967296)) 65520) 0) [2022-02-15 01:28:58,337 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_86.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_86.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:28:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:28:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:28:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:29:04,893 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:04,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497960863] [2022-02-15 01:29:04,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [497960863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:04,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:04,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 01:29:04,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602534222] [2022-02-15 01:29:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:04,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 01:29:04,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 01:29:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-02-15 01:29:04,895 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:11,146 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-02-15 01:29:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 01:29:11,146 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-02-15 01:29:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:11,147 INFO L225 Difference]: With dead ends: 70 [2022-02-15 01:29:11,147 INFO L226 Difference]: Without dead ends: 63 [2022-02-15 01:29:11,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 01:29:11,148 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:11,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-15 01:29:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-15 01:29:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-15 01:29:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-02-15 01:29:11,157 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 59 [2022-02-15 01:29:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:11,157 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-02-15 01:29:11,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-02-15 01:29:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 01:29:11,158 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:11,158 INFO L514 BasicCegarLoop]: trace histogram [25, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:29:11,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 01:29:11,158 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1553825655, now seen corresponding path program 23 times [2022-02-15 01:29:11,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:11,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365168257] [2022-02-15 01:29:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:11,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:11,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:11,316 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:11,409 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:11,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:11,517 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:11,520 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_90.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_90.0)) 4294967296)) 65520) 0) [2022-02-15 01:29:11,520 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_90.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_90.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:11,532 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_90.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_90.1)) 4294967296)) 65520) 0) [2022-02-15 01:29:11,533 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_90.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_90.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:29:19,528 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:19,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365168257] [2022-02-15 01:29:19,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365168257] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:19,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:19,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 01:29:19,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123964908] [2022-02-15 01:29:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:19,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 01:29:19,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 01:29:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 01:29:19,529 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:27,125 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2022-02-15 01:29:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 01:29:27,125 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-02-15 01:29:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:27,125 INFO L225 Difference]: With dead ends: 72 [2022-02-15 01:29:27,125 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 01:29:27,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 27 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 01:29:27,126 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:27,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 01:29:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 01:29:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-15 01:29:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-02-15 01:29:27,135 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 61 [2022-02-15 01:29:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:27,135 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-02-15 01:29:27,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-02-15 01:29:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 01:29:27,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:27,136 INFO L514 BasicCegarLoop]: trace histogram [26, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:29:27,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 01:29:27,136 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1688150052, now seen corresponding path program 24 times [2022-02-15 01:29:27,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:27,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035399483] [2022-02-15 01:29:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:27,213 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:27,304 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:27,304 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:27,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:27,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:27,521 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:27,525 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_94.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_94.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:27,526 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_94.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_94.0)) 4294967296)) 65520) 0) [2022-02-15 01:29:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:27,546 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_94.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_94.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:27,546 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_94.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_94.1)) 4294967296)) 65520) 0) [2022-02-15 01:29:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:29:35,968 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:35,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035399483] [2022-02-15 01:29:35,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1035399483] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:35,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:35,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 01:29:35,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888624916] [2022-02-15 01:29:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:35,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 01:29:35,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 01:29:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 01:29:35,970 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:29:44,275 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-02-15 01:29:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 01:29:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-02-15 01:29:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:29:44,276 INFO L225 Difference]: With dead ends: 74 [2022-02-15 01:29:44,276 INFO L226 Difference]: Without dead ends: 67 [2022-02-15 01:29:44,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=306, Invalid=3354, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 01:29:44,277 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:29:44,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 73 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-15 01:29:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-15 01:29:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-02-15 01:29:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2022-02-15 01:29:44,287 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 63 [2022-02-15 01:29:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:29:44,287 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2022-02-15 01:29:44,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:29:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2022-02-15 01:29:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 01:29:44,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:29:44,287 INFO L514 BasicCegarLoop]: trace histogram [27, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:29:44,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 01:29:44,288 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:29:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:29:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash -919452417, now seen corresponding path program 25 times [2022-02-15 01:29:44,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:29:44,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774563677] [2022-02-15 01:29:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:29:44,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:44,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:44,457 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:44,566 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:29:44,671 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:29:44,672 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:29:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:29:44,675 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_98.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_98.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:44,675 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_98.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_98.0)) 4294967296)) 65520) 0) [2022-02-15 01:29:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,684 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_98.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_98.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:29:44,684 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_98.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_98.1)) 4294967296)) 65520) 0) [2022-02-15 01:29:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:29:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:29:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:29:53,572 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:29:53,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774563677] [2022-02-15 01:29:53,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [774563677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:29:53,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:29:53,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 01:29:53,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008161806] [2022-02-15 01:29:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:29:53,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 01:29:53,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:29:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 01:29:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 01:29:53,574 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:02,633 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-02-15 01:30:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 01:30:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-02-15 01:30:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:02,634 INFO L225 Difference]: With dead ends: 76 [2022-02-15 01:30:02,634 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 01:30:02,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 29 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=317, Invalid=3589, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 01:30:02,635 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:02,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 68 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 01:30:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 01:30:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-15 01:30:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2022-02-15 01:30:02,644 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 65 [2022-02-15 01:30:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:02,645 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2022-02-15 01:30:02,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2022-02-15 01:30:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 01:30:02,645 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:02,645 INFO L514 BasicCegarLoop]: trace histogram [28, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:30:02,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 01:30:02,645 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1435475738, now seen corresponding path program 26 times [2022-02-15 01:30:02,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:02,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727516237] [2022-02-15 01:30:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:02,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:02,796 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:02,796 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:02,876 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:02,977 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:02,977 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:02,980 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_102.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_102.0)) 4294967296)) 65520) 0) [2022-02-15 01:30:02,980 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_102.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_102.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:02,987 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_102.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_102.1)) 4294967296)) 65520) 0) [2022-02-15 01:30:02,987 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_102.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_102.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:30:11,342 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:11,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727516237] [2022-02-15 01:30:11,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727516237] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:11,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:11,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 01:30:11,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148680527] [2022-02-15 01:30:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:11,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 01:30:11,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 01:30:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 01:30:11,344 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:19,983 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-02-15 01:30:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 01:30:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-02-15 01:30:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:19,984 INFO L225 Difference]: With dead ends: 78 [2022-02-15 01:30:19,984 INFO L226 Difference]: Without dead ends: 71 [2022-02-15 01:30:19,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 29 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=328, Invalid=3832, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 01:30:19,985 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:19,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 153 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-02-15 01:30:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-15 01:30:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-02-15 01:30:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-02-15 01:30:19,995 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 67 [2022-02-15 01:30:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:19,995 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-02-15 01:30:19,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-02-15 01:30:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 01:30:19,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:19,996 INFO L514 BasicCegarLoop]: trace histogram [29, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:30:19,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 01:30:19,996 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1073667701, now seen corresponding path program 27 times [2022-02-15 01:30:19,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:19,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952459509] [2022-02-15 01:30:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:20,076 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:20,163 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:20,163 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:20,274 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:20,381 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:20,381 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:20,384 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_106.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_106.0)) 4294967296)) 65520) 0) [2022-02-15 01:30:20,384 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_106.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_106.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:20,391 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_106.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_106.1)) 4294967296)) 65520) 0) [2022-02-15 01:30:20,391 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_106.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_106.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:20,548 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 01:30:30,418 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:30,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952459509] [2022-02-15 01:30:30,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [952459509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:30,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:30,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 01:30:30,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975456217] [2022-02-15 01:30:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:30,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 01:30:30,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 01:30:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 01:30:30,419 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:30:40,926 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-02-15 01:30:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 01:30:40,927 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-02-15 01:30:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:30:40,927 INFO L225 Difference]: With dead ends: 80 [2022-02-15 01:30:40,927 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 01:30:40,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 31 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=339, Invalid=4083, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 01:30:40,928 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:30:40,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 98 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-15 01:30:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 01:30:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-02-15 01:30:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-02-15 01:30:40,942 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 69 [2022-02-15 01:30:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:30:40,942 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-02-15 01:30:40,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:30:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-02-15 01:30:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 01:30:40,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:30:40,964 INFO L514 BasicCegarLoop]: trace histogram [30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:30:40,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 01:30:40,965 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:30:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:30:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1268495120, now seen corresponding path program 28 times [2022-02-15 01:30:40,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:30:40,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638459974] [2022-02-15 01:30:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:30:41,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:41,205 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:41,205 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:41,346 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:30:41,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:30:41,455 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:30:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:30:41,458 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_110.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_110.0)) 4294967296)) 65520) 0) [2022-02-15 01:30:41,459 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_110.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_110.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:41,493 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_110.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_110.1)) 4294967296)) 65520) 0) [2022-02-15 01:30:41,493 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_110.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_110.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:30:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:30:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:30:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:30:52,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:30:52,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638459974] [2022-02-15 01:30:52,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [638459974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:30:52,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:30:52,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 01:30:52,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086574299] [2022-02-15 01:30:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:30:52,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 01:30:52,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:30:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 01:30:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 01:30:52,132 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:02,935 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-02-15 01:31:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 01:31:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-02-15 01:31:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:02,936 INFO L225 Difference]: With dead ends: 82 [2022-02-15 01:31:02,936 INFO L226 Difference]: Without dead ends: 75 [2022-02-15 01:31:02,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 32 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=350, Invalid=4342, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 01:31:02,937 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:02,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-02-15 01:31:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-15 01:31:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-02-15 01:31:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-02-15 01:31:02,948 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 71 [2022-02-15 01:31:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:02,948 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-02-15 01:31:02,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-02-15 01:31:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 01:31:02,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:02,949 INFO L514 BasicCegarLoop]: trace histogram [31, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:31:02,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 01:31:02,949 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -480916245, now seen corresponding path program 29 times [2022-02-15 01:31:02,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:02,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003243531] [2022-02-15 01:31:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:03,019 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:03,304 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:03,304 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:03,389 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:03,492 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:03,493 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:03,497 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_114.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_114.0)) 4294967296)) 65520) 0) [2022-02-15 01:31:03,497 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_114.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_114.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,509 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_114.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_114.1)) 4294967296)) 65520) 0) [2022-02-15 01:31:03,509 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_114.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_114.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:31:15,261 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:15,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003243531] [2022-02-15 01:31:15,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2003243531] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:15,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:15,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 01:31:15,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070017574] [2022-02-15 01:31:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:15,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 01:31:15,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:15,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 01:31:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 01:31:15,262 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:27,118 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-02-15 01:31:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 01:31:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-02-15 01:31:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:27,119 INFO L225 Difference]: With dead ends: 84 [2022-02-15 01:31:27,119 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 01:31:27,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 4 SyntacticMatches, 33 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=361, Invalid=4609, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 01:31:27,120 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:27,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 88 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-02-15 01:31:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 01:31:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-02-15 01:31:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2022-02-15 01:31:27,131 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 73 [2022-02-15 01:31:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:27,131 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2022-02-15 01:31:27,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 35 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:27,131 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2022-02-15 01:31:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 01:31:27,131 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:27,131 INFO L514 BasicCegarLoop]: trace histogram [32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:31:27,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 01:31:27,132 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1961942022, now seen corresponding path program 30 times [2022-02-15 01:31:27,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:27,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649763395] [2022-02-15 01:31:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:27,209 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:27,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:27,290 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:27,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:27,515 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:27,516 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:27,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:27,519 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_118.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_118.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:27,519 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_118.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_118.0)) 4294967296)) 65520) 0) [2022-02-15 01:31:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:27,526 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_118.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_118.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:27,526 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_118.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_118.1)) 4294967296)) 65520) 0) [2022-02-15 01:31:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:31:40,067 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:31:40,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649763395] [2022-02-15 01:31:40,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1649763395] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:31:40,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:31:40,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 01:31:40,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579095320] [2022-02-15 01:31:40,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:31:40,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 01:31:40,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:31:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 01:31:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 01:31:40,068 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:31:53,305 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-02-15 01:31:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 01:31:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-02-15 01:31:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:31:53,306 INFO L225 Difference]: With dead ends: 86 [2022-02-15 01:31:53,306 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 01:31:53,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 4 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=372, Invalid=4884, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 01:31:53,307 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:31:53,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 98 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-02-15 01:31:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 01:31:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-02-15 01:31:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-02-15 01:31:53,317 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 75 [2022-02-15 01:31:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:31:53,318 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-02-15 01:31:53,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:31:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-02-15 01:31:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 01:31:53,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:31:53,318 INFO L514 BasicCegarLoop]: trace histogram [33, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:31:53,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 01:31:53,318 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:31:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:31:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 201625697, now seen corresponding path program 31 times [2022-02-15 01:31:53,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:31:53,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919144268] [2022-02-15 01:31:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:31:53,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:53,456 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:53,457 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:53,988 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:31:54,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:31:54,119 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:31:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:31:54,122 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_122.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_122.0)) 4294967296)) 65520) 0) [2022-02-15 01:31:54,122 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_122.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_122.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:54,130 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_122.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_122.1)) 4294967296)) 65520) 0) [2022-02-15 01:31:54,130 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_122.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_122.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:31:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:31:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:31:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:32:06,669 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:06,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919144268] [2022-02-15 01:32:06,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [919144268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:06,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:06,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 01:32:06,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759574111] [2022-02-15 01:32:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:06,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 01:32:06,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 01:32:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 01:32:06,670 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:19,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:32:19,875 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2022-02-15 01:32:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 01:32:19,876 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-02-15 01:32:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:32:19,876 INFO L225 Difference]: With dead ends: 88 [2022-02-15 01:32:19,876 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 01:32:19,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 4 SyntacticMatches, 35 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=383, Invalid=5167, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 01:32:19,877 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 75 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:32:19,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 158 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-02-15 01:32:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 01:32:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-02-15 01:32:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2022-02-15 01:32:19,888 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 77 [2022-02-15 01:32:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:32:19,888 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2022-02-15 01:32:19,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2022-02-15 01:32:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 01:32:19,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:32:19,889 INFO L514 BasicCegarLoop]: trace histogram [34, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:32:19,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 01:32:19,889 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:32:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:32:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 754751996, now seen corresponding path program 32 times [2022-02-15 01:32:19,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:32:19,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567687907] [2022-02-15 01:32:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:32:19,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:32:20,034 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:20,034 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:32:20,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:20,302 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:32:20,302 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:32:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:32:20,305 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_126.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_126.0)) 4294967296)) 65520) 0) [2022-02-15 01:32:20,305 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_126.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_126.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:32:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:20,316 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_126.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_126.1)) 4294967296)) 65520) 0) [2022-02-15 01:32:20,316 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_126.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_126.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:32:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:32:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:32:31,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:31,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567687907] [2022-02-15 01:32:31,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1567687907] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:31,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:31,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 01:32:31,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78082761] [2022-02-15 01:32:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:31,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 01:32:31,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 01:32:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 01:32:31,788 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:32:44,098 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-02-15 01:32:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 01:32:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-02-15 01:32:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:32:44,099 INFO L225 Difference]: With dead ends: 90 [2022-02-15 01:32:44,099 INFO L226 Difference]: Without dead ends: 83 [2022-02-15 01:32:44,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 5 SyntacticMatches, 35 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=394, Invalid=5458, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 01:32:44,100 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 77 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:32:44,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 78 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-02-15 01:32:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-15 01:32:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-02-15 01:32:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2022-02-15 01:32:44,111 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 79 [2022-02-15 01:32:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:32:44,111 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2022-02-15 01:32:44,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:32:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2022-02-15 01:32:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 01:32:44,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:32:44,112 INFO L514 BasicCegarLoop]: trace histogram [35, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:32:44,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 01:32:44,112 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:32:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:32:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash -266819369, now seen corresponding path program 33 times [2022-02-15 01:32:44,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:32:44,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893631426] [2022-02-15 01:32:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:32:44,181 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:32:44,265 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:44,265 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:32:44,564 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:32:44,974 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:32:44,975 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:32:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:32:44,977 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_130.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_130.0)) 4294967296)) 65520) 0) [2022-02-15 01:32:44,978 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_130.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_130.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:32:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:44,986 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_130.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_130.1)) 4294967296)) 65520) 0) [2022-02-15 01:32:44,986 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_130.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_130.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:32:45,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:32:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:32:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:32:58,858 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:32:58,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893631426] [2022-02-15 01:32:58,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [893631426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:32:58,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:32:58,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 01:32:58,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687295428] [2022-02-15 01:32:58,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:32:58,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 01:32:58,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:32:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 01:32:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1650, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 01:32:58,860 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:13,760 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-02-15 01:33:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 01:33:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-02-15 01:33:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:13,761 INFO L225 Difference]: With dead ends: 92 [2022-02-15 01:33:13,761 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 01:33:13,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 37 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=405, Invalid=5757, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 01:33:13,762 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:13,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 113 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-02-15 01:33:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 01:33:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-02-15 01:33:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-02-15 01:33:13,774 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 81 [2022-02-15 01:33:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:13,774 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-02-15 01:33:13,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.925) internal successors, (77), 39 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-02-15 01:33:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 01:33:13,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:13,775 INFO L514 BasicCegarLoop]: trace histogram [36, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:33:13,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 01:33:13,775 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1550609650, now seen corresponding path program 34 times [2022-02-15 01:33:13,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:13,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983593714] [2022-02-15 01:33:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:13,848 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:33:13,930 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:13,930 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:33:14,006 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:14,126 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:33:14,126 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:33:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:14,133 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_134.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_134.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:33:14,133 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_134.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_134.0)) 4294967296)) 65520) 0) [2022-02-15 01:33:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:14,140 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_134.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_134.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:33:14,140 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_134.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_134.1)) 4294967296)) 65520) 0) [2022-02-15 01:33:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:33:26,585 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:26,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983593714] [2022-02-15 01:33:26,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [983593714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:26,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:26,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 01:33:26,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842119578] [2022-02-15 01:33:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:26,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 01:33:26,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 01:33:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 01:33:26,586 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:33:39,954 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2022-02-15 01:33:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 01:33:39,954 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-02-15 01:33:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:33:39,955 INFO L225 Difference]: With dead ends: 94 [2022-02-15 01:33:39,955 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 01:33:39,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 38 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=416, Invalid=6064, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 01:33:39,956 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:33:39,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 38 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-02-15 01:33:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 01:33:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-02-15 01:33:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-02-15 01:33:39,968 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 83 [2022-02-15 01:33:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:33:39,968 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-02-15 01:33:39,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:33:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-02-15 01:33:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 01:33:39,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:33:39,969 INFO L514 BasicCegarLoop]: trace histogram [37, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:33:39,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 01:33:39,969 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:33:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:33:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash 48207437, now seen corresponding path program 35 times [2022-02-15 01:33:39,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:33:39,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936309986] [2022-02-15 01:33:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:33:40,053 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:33:40,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:40,137 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:33:40,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:33:40,345 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:33:40,345 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:33:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:33:40,348 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_138.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_138.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:33:40,348 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_138.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_138.0)) 4294967296)) 65520) 0) [2022-02-15 01:33:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:40,361 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_138.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_138.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:33:40,361 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_138.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_138.1)) 4294967296)) 65520) 0) [2022-02-15 01:33:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:33:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:33:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:33:56,490 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:33:56,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936309986] [2022-02-15 01:33:56,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [936309986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:33:56,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:33:56,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 01:33:56,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701177996] [2022-02-15 01:33:56,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:33:56,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 01:33:56,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:33:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 01:33:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 01:33:56,492 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:34:13,554 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2022-02-15 01:34:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 01:34:13,555 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-02-15 01:34:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:34:13,555 INFO L225 Difference]: With dead ends: 96 [2022-02-15 01:34:13,555 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 01:34:13,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 4 SyntacticMatches, 39 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=427, Invalid=6379, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 01:34:13,556 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 83 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-02-15 01:34:13,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 163 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-02-15 01:34:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 01:34:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-02-15 01:34:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-02-15 01:34:13,572 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 85 [2022-02-15 01:34:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:34:13,572 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-02-15 01:34:13,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 41 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-02-15 01:34:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 01:34:13,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:34:13,573 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:34:13,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 01:34:13,573 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:34:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:34:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash -651307800, now seen corresponding path program 36 times [2022-02-15 01:34:13,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:34:13,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636537259] [2022-02-15 01:34:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:34:13,658 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:34:13,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:13,754 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:34:13,856 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:13,972 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:34:13,972 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:34:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:34:13,975 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_142.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_142.0)) 4294967296)) 65520) 0) [2022-02-15 01:34:13,975 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_142.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_142.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:34:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:13,983 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_142.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_142.1)) 4294967296)) 65520) 0) [2022-02-15 01:34:13,983 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_142.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_142.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:34:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:34:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:14,153 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 01:34:27,874 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:34:27,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636537259] [2022-02-15 01:34:27,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [636537259] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:34:27,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:34:27,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 01:34:27,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651135976] [2022-02-15 01:34:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:34:27,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 01:34:27,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:34:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 01:34:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 01:34:27,875 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:34:43,155 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-02-15 01:34:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 01:34:43,156 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-02-15 01:34:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:34:43,156 INFO L225 Difference]: With dead ends: 98 [2022-02-15 01:34:43,156 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 01:34:43,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 4 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=438, Invalid=6702, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 01:34:43,157 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 85 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:34:43,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 88 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-02-15 01:34:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 01:34:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-15 01:34:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2022-02-15 01:34:43,171 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 87 [2022-02-15 01:34:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:34:43,171 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2022-02-15 01:34:43,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.930232558139535) internal successors, (83), 42 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:34:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2022-02-15 01:34:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 01:34:43,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:34:43,172 INFO L514 BasicCegarLoop]: trace histogram [39, 37, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:34:43,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 01:34:43,172 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:34:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:34:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1424414915, now seen corresponding path program 37 times [2022-02-15 01:34:43,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:34:43,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607517453] [2022-02-15 01:34:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:34:43,241 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:34:43,311 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:43,312 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:34:43,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:34:43,513 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:34:43,513 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:34:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:34:43,516 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_146.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_146.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:34:43,516 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_146.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_146.0)) 4294967296)) 65520) 0) [2022-02-15 01:34:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:43,529 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_146.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_146.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:34:43,530 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_146.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_146.1)) 4294967296)) 65520) 0) [2022-02-15 01:34:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:34:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:34:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:35:00,861 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:35:00,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607517453] [2022-02-15 01:35:00,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607517453] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:35:00,861 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:35:00,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 01:35:00,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276780672] [2022-02-15 01:35:00,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:35:00,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 01:35:00,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:35:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 01:35:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1991, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 01:35:00,862 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:35:18,775 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-02-15 01:35:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 01:35:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-02-15 01:35:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:35:18,776 INFO L225 Difference]: With dead ends: 102 [2022-02-15 01:35:18,776 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 01:35:18,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 4 SyntacticMatches, 41 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=447, Invalid=7035, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 01:35:18,777 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:35:18,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 38 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-02-15 01:35:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 01:35:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2022-02-15 01:35:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2022-02-15 01:35:18,789 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 89 [2022-02-15 01:35:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:35:18,790 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2022-02-15 01:35:18,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2022-02-15 01:35:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 01:35:18,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:35:18,790 INFO L514 BasicCegarLoop]: trace histogram [40, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:35:18,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 01:35:18,790 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:35:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:35:18,791 INFO L85 PathProgramCache]: Analyzing trace with hash -965848610, now seen corresponding path program 38 times [2022-02-15 01:35:18,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:35:18,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172645097] [2022-02-15 01:35:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:35:18,920 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:35:18,990 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:18,990 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:35:19,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:20,160 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:35:20,160 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:35:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:35:20,163 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_150.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_150.0)) 4294967296)) 65520) 0) [2022-02-15 01:35:20,163 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_150.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_150.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:35:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,180 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_150.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_150.1)) 4294967296)) 65520) 0) [2022-02-15 01:35:20,181 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_150.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_150.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:35:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:35:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:35:38,106 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:35:38,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172645097] [2022-02-15 01:35:38,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [172645097] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:35:38,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:35:38,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 01:35:38,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617895875] [2022-02-15 01:35:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:35:38,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 01:35:38,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:35:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 01:35:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 01:35:38,107 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:35:56,700 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-02-15 01:35:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 01:35:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-02-15 01:35:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:35:56,701 INFO L225 Difference]: With dead ends: 102 [2022-02-15 01:35:56,701 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 01:35:56,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 42 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=460, Invalid=7372, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 01:35:56,702 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-15 01:35:56,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 123 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-02-15 01:35:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 01:35:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-02-15 01:35:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-02-15 01:35:56,730 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 91 [2022-02-15 01:35:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:35:56,730 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-02-15 01:35:56,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 44 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:35:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-02-15 01:35:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 01:35:56,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:35:56,730 INFO L514 BasicCegarLoop]: trace histogram [41, 39, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:35:56,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 01:35:56,731 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:35:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:35:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -201592775, now seen corresponding path program 39 times [2022-02-15 01:35:56,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:35:56,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998923708] [2022-02-15 01:35:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:35:56,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:35:56,908 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:56,908 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:35:57,001 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:35:57,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:35:57,138 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:35:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:35:57,140 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_154.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_154.0)) 4294967296)) 65520) 0) [2022-02-15 01:35:57,141 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_154.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_154.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:35:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:57,158 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_154.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_154.1)) 4294967296)) 65520) 0) [2022-02-15 01:35:57,159 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_154.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_154.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:35:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:35:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:35:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:36:13,209 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:36:13,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998923708] [2022-02-15 01:36:13,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [998923708] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:36:13,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:36:13,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 01:36:13,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322541527] [2022-02-15 01:36:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:36:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 01:36:13,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:36:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 01:36:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2264, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 01:36:13,211 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:36:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:36:30,453 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2022-02-15 01:36:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 01:36:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2022-02-15 01:36:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:36:30,454 INFO L225 Difference]: With dead ends: 104 [2022-02-15 01:36:30,454 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 01:36:30,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 4 SyntacticMatches, 42 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=479, Invalid=7893, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 01:36:30,455 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3487 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-15 01:36:30,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 63 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3487 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-02-15 01:36:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 01:36:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-02-15 01:36:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:36:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2022-02-15 01:36:30,468 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 93 [2022-02-15 01:36:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:36:30,468 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2022-02-15 01:36:30,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 45 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:36:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2022-02-15 01:36:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-15 01:36:30,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:36:30,469 INFO L514 BasicCegarLoop]: trace histogram [42, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:36:30,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 01:36:30,469 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:36:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:36:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash -191142956, now seen corresponding path program 40 times [2022-02-15 01:36:30,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:36:30,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78319388] [2022-02-15 01:36:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:36:30,528 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:36:30,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:36:30,586 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:36:31,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:36:31,561 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:36:31,561 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:36:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:36:31,564 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_158.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_158.0)) 4294967296)) 65520) 0) [2022-02-15 01:36:31,564 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_158.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_158.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:36:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,571 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_158.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_158.1)) 4294967296)) 65520) 0) [2022-02-15 01:36:31,571 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_158.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_158.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:36:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:36:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:36:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:36:51,169 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:36:51,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78319388] [2022-02-15 01:36:51,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [78319388] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:36:51,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:36:51,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 01:36:51,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570602116] [2022-02-15 01:36:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:36:51,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 01:36:51,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:36:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 01:36:51,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2267, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 01:36:51,171 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:37:12,294 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-02-15 01:37:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 01:37:12,295 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-02-15 01:37:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:37:12,295 INFO L225 Difference]: With dead ends: 106 [2022-02-15 01:37:12,295 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 01:37:12,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 4 SyntacticMatches, 44 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=480, Invalid=8076, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 01:37:12,296 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-02-15 01:37:12,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 148 Invalid, 3950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-02-15 01:37:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 01:37:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-15 01:37:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2022-02-15 01:37:12,315 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 95 [2022-02-15 01:37:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:37:12,315 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2022-02-15 01:37:12,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2022-02-15 01:37:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 01:37:12,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:37:12,316 INFO L514 BasicCegarLoop]: trace histogram [43, 41, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:37:12,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 01:37:12,316 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:37:12,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:37:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1261198511, now seen corresponding path program 41 times [2022-02-15 01:37:12,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:37:12,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307997067] [2022-02-15 01:37:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:37:12,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:37:12,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:12,450 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:37:15,209 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:15,306 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:37:15,306 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:37:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:37:15,309 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_162.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_162.0)) 4294967296)) 268435455) 0)) [2022-02-15 01:37:15,309 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_162.0) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_162.0)) 4294967296)) 65520) 0) [2022-02-15 01:37:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:15,317 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_162.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_162.1)) 4294967296)) 268435455) 0)) [2022-02-15 01:37:15,318 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 1) main_~x~0_6) (* (- 2) .v_it_162.1) (* 4294967296 (div (+ main_~x~0_6 (* 2 .v_it_162.1)) 4294967296)) 65520) 0) [2022-02-15 01:37:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:37:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:15,469 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 01:37:31,358 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:37:31,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307997067] [2022-02-15 01:37:31,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [307997067] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:37:31,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:37:31,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 01:37:31,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738094847] [2022-02-15 01:37:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:37:31,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 01:37:31,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:37:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 01:37:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2362, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 01:37:31,360 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:37:49,226 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2022-02-15 01:37:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 01:37:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-02-15 01:37:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:37:49,228 INFO L225 Difference]: With dead ends: 108 [2022-02-15 01:37:49,228 INFO L226 Difference]: Without dead ends: 101 [2022-02-15 01:37:49,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 4 SyntacticMatches, 45 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=493, Invalid=8437, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 01:37:49,229 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-15 01:37:49,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 128 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-02-15 01:37:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-15 01:37:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-02-15 01:37:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2022-02-15 01:37:49,267 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 97 [2022-02-15 01:37:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:37:49,268 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2022-02-15 01:37:49,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.9375) internal successors, (93), 47 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 01:37:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2022-02-15 01:37:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 01:37:49,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:37:49,268 INFO L514 BasicCegarLoop]: trace histogram [44, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:37:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 01:37:49,269 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:37:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:37:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1096977098, now seen corresponding path program 42 times [2022-02-15 01:37:49,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:37:49,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380977654] [2022-02-15 01:37:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:37:49,370 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:37:49,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:49,460 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:37:49,547 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 01:37:49,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:37:49,697 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2022-02-15 01:37:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:37:49,700 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_166.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_166.0) main_~x~0_6) 4294967296)) 268435455) 0)) [2022-02-15 01:37:49,700 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_166.0) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_166.0) main_~x~0_6) 4294967296)) 65520) 0) [2022-02-15 01:37:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,708 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_166.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_166.1) main_~x~0_6) 4294967296)) 268435455) 0)) [2022-02-15 01:37:49,708 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* (- 2) .v_it_166.1) (* (- 1) main_~x~0_6) (* 4294967296 (div (+ (* 2 .v_it_166.1) main_~x~0_6) 4294967296)) 65520) 0) [2022-02-15 01:37:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:37:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:37:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:38:20,531 WARN L228 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:38:27,267 WARN L228 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:38:39,279 WARN L228 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:38:58,069 WARN L228 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 01:39:05,660 WARN L228 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)