/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/simple_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:00:46,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:00:46,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:00:46,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 13:00:46,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:00:46,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:00:46,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:00:46,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 13:00:46,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:00:46,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:00:46,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:00:46,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:00:46,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:00:46,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:00:46,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:00:46,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:00:46,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:00:46,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:00:46,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:00:46,800 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:00:46,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:00:46,801 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:00:46,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:00:47,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:00:47,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:00:47,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:00:47,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:00:47,068 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:00:47,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2022-03-20 13:00:47,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c09bd64/772017db4e77433f8ee1be02db6ac6de/FLAGcbac94699 [2022-03-20 13:00:47,531 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:00:47,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2022-03-20 13:00:47,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c09bd64/772017db4e77433f8ee1be02db6ac6de/FLAGcbac94699 [2022-03-20 13:00:47,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c09bd64/772017db4e77433f8ee1be02db6ac6de [2022-03-20 13:00:47,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:00:47,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:00:47,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:00:47,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:00:47,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:00:47,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:00:47" (1/1) ... [2022-03-20 13:00:47,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec93af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:47, skipping insertion in model container [2022-03-20 13:00:47,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:00:47" (1/1) ... [2022-03-20 13:00:47,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:00:47,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:00:48,087 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/simple_4-1.c[322,335] [2022-03-20 13:00:48,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:00:48,126 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:00:48,139 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/simple_4-1.c[322,335] [2022-03-20 13:00:48,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:00:48,151 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:00:48,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48 WrapperNode [2022-03-20 13:00:48,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:00:48,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:00:48,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:00:48,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:00:48,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:00:48,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:00:48,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:00:48,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:00:48,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (1/1) ... [2022-03-20 13:00:48,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:00:48,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:48,208 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) [2022-03-20 13:00:48,225 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 [2022-03-20 13:00:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:00:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:00:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:00:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 13:00:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:00:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 13:00:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:00:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:00:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:00:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:00:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:00:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:00:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:00:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:00:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:00:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:00:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:00:48,310 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:00:48,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:00:48,388 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:00:48,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:00:48,393 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 13:00:48,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:00:48 BoogieIcfgContainer [2022-03-20 13:00:48,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:00:48,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:00:48,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:00:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:00:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:00:47" (1/3) ... [2022-03-20 13:00:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a804633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:00:48, skipping insertion in model container [2022-03-20 13:00:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:48" (2/3) ... [2022-03-20 13:00:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a804633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:00:48, skipping insertion in model container [2022-03-20 13:00:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:00:48" (3/3) ... [2022-03-20 13:00:48,405 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_4-1.c [2022-03-20 13:00:48,409 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:00:48,409 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:00:48,436 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:00:48,442 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-03-20 13:00:48,443 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:00:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-03-20 13:00:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 13:00:48,469 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:48,470 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:48,470 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2022-03-20 13:00:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:48,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [221511156] [2022-03-20 13:00:48,491 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:00:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 2 times [2022-03-20 13:00:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:48,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484714133] [2022-03-20 13:00:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:48,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484714133] [2022-03-20 13:00:48,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484714133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:48,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:48,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:00:48,678 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:48,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [221511156] [2022-03-20 13:00:48,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [221511156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:48,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:48,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:00:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712957676] [2022-03-20 13:00:48,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:48,691 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 13:00:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 13:00:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 13:00:48,772 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-03-20 13:00:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:48,823 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-03-20 13:00:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 13:00:48,826 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 [2022-03-20 13:00:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:48,830 INFO L225 Difference]: With dead ends: 29 [2022-03-20 13:00:48,830 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 13:00:48,833 INFO L912 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 [2022-03-20 13:00:48,836 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 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 [2022-03-20 13:00:48,837 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 13:00:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 13:00:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-03-20 13:00:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 13:00:48,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 13:00:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:48,870 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 13:00:48,870 INFO L479 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) [2022-03-20 13:00:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 13:00:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 13:00:48,872 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:48,872 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:48,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:00:48,873 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:48,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2022-03-20 13:00:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:48,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1851719386] [2022-03-20 13:00:48,877 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:00:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 2 times [2022-03-20 13:00:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:48,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843650519] [2022-03-20 13:00:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:49,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843650519] [2022-03-20 13:00:49,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843650519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:49,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:49,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:00:49,020 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:49,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1851719386] [2022-03-20 13:00:49,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1851719386] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:49,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:49,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:00:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923927339] [2022-03-20 13:00:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:49,021 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 13:00:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 13:00:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 13:00:49,023 INFO L87 Difference]: Start difference. First operand 12 states and 12 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) [2022-03-20 13:00:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:49,067 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-20 13:00:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 13:00:49,068 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 [2022-03-20 13:00:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:49,069 INFO L225 Difference]: With dead ends: 18 [2022-03-20 13:00:49,069 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 13:00:49,069 INFO L912 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 [2022-03-20 13:00:49,070 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:49,071 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 13:00:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-20 13:00:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-03-20 13:00:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-20 13:00:49,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-20 13:00:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:49,076 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-20 13:00:49,076 INFO L479 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) [2022-03-20 13:00:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-20 13:00:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 13:00:49,077 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:49,077 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:49,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 13:00:49,077 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2022-03-20 13:00:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1703493156] [2022-03-20 13:00:49,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:49,248 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1867307785, now seen corresponding path program 1 times [2022-03-20 13:00:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874900267] [2022-03-20 13:00:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:49,272 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:49,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922397536] [2022-03-20 13:00:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:49,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:49,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:49,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 13:00:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:49,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:49,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 2 times [2022-03-20 13:00:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480100600] [2022-03-20 13:00:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480100600] [2022-03-20 13:00:49,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480100600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:49,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684194252] [2022-03-20 13:00:49,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:00:49,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:49,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:49,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:49,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 13:00:49,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:00:49,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 13:00:49,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:49,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:49,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684194252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:49,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:49,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 7] total 11 [2022-03-20 13:00:49,782 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:49,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1703493156] [2022-03-20 13:00:49,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1703493156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:49,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:49,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:00:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998221638] [2022-03-20 13:00:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:49,783 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 13:00:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 13:00:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-20 13:00:49,785 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:49,834 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-20 13:00:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 13:00:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 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 12 [2022-03-20 13:00:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:49,835 INFO L225 Difference]: With dead ends: 19 [2022-03-20 13:00:49,835 INFO L226 Difference]: Without dead ends: 14 [2022-03-20 13:00:49,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-20 13:00:49,847 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:49,848 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-20 13:00:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-20 13:00:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2022-03-20 13:00:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-20 13:00:49,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-20 13:00:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:49,852 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-20 13:00:49,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-20 13:00:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 13:00:49,852 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:49,853 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:49,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:50,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:50,253 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:50,254 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:50,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 3 times [2022-03-20 13:00:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:50,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1655364950] [2022-03-20 13:00:54,511 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:54,512 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1808202441, now seen corresponding path program 1 times [2022-03-20 13:00:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:54,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468322619] [2022-03-20 13:00:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:54,522 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_2.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539178223] [2022-03-20 13:00:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:54,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:54,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:54,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 13:00:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:54,607 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:54,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 4 times [2022-03-20 13:00:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:54,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306690022] [2022-03-20 13:00:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:54,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306690022] [2022-03-20 13:00:54,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306690022] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:54,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026365124] [2022-03-20 13:00:54,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:00:54,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:54,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:54,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 13:00:54,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:00:54,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:54,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 13:00:54,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:54,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:54,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026365124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:54,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:54,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-20 13:00:54,870 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:54,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1655364950] [2022-03-20 13:00:54,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1655364950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:54,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:54,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:00:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103791130] [2022-03-20 13:00:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:54,871 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 13:00:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 13:00:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-20 13:00:54,872 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-20 13:00:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:54,920 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-20 13:00:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 13:00:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2022-03-20 13:00:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:54,921 INFO L225 Difference]: With dead ends: 20 [2022-03-20 13:00:54,921 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 13:00:54,921 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-20 13:00:54,922 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:54,922 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 13:00:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 13:00:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-03-20 13:00:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-20 13:00:54,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-20 13:00:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:54,926 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-20 13:00:54,926 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-20 13:00:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-20 13:00:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 13:00:54,927 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:54,927 INFO L499 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:54,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:55,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:55,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:55,349 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 5 times [2022-03-20 13:00:55,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:55,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [836691406] [2022-03-20 13:00:55,388 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:55,388 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1749097097, now seen corresponding path program 1 times [2022-03-20 13:00:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089533646] [2022-03-20 13:00:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:55,394 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_3.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100346741] [2022-03-20 13:00:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:55,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:55,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:55,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:55,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 13:00:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:55,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:55,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 6 times [2022-03-20 13:00:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:55,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844865196] [2022-03-20 13:00:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:55,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844865196] [2022-03-20 13:00:55,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844865196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:55,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285631384] [2022-03-20 13:00:55,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:00:55,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:55,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:55,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:55,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 13:00:55,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-20 13:00:55,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:55,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 13:00:55,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:55,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:55,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285631384] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:55,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:55,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 15 [2022-03-20 13:00:55,783 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:55,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [836691406] [2022-03-20 13:00:55,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [836691406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:55,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:55,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 13:00:55,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416012926] [2022-03-20 13:00:55,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:55,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 13:00:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 13:00:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-03-20 13:00:55,785 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:55,861 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-03-20 13:00:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 13:00:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 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 14 [2022-03-20 13:00:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:55,867 INFO L225 Difference]: With dead ends: 21 [2022-03-20 13:00:55,867 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 13:00:55,868 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-03-20 13:00:55,868 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:55,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 13:00:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 13:00:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2022-03-20 13:00:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-20 13:00:55,872 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-03-20 13:00:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:55,872 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-20 13:00:55,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-20 13:00:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 13:00:55,872 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:55,873 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:55,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:56,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-20 13:00:56,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:56,280 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 7 times [2022-03-20 13:00:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [4807654] [2022-03-20 13:00:56,334 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:56,335 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1689991753, now seen corresponding path program 1 times [2022-03-20 13:00:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:56,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195598433] [2022-03-20 13:00:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:56,345 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_4.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:56,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321253812] [2022-03-20 13:00:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:56,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:56,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:56,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 13:00:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:56,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:56,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 8 times [2022-03-20 13:00:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:56,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455658129] [2022-03-20 13:00:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455658129] [2022-03-20 13:00:56,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455658129] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487939994] [2022-03-20 13:00:56,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:00:56,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:56,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:56,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:56,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 13:00:56,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:00:56,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:56,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 13:00:56,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:56,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:56,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487939994] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:56,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:56,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 10] total 17 [2022-03-20 13:00:56,818 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:56,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [4807654] [2022-03-20 13:00:56,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [4807654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:56,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:56,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 13:00:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304505357] [2022-03-20 13:00:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:56,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 13:00:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 13:00:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-03-20 13:00:56,820 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 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) [2022-03-20 13:00:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:56,909 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-03-20 13:00:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 13:00:56,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 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 [2022-03-20 13:00:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:56,910 INFO L225 Difference]: With dead ends: 22 [2022-03-20 13:00:56,910 INFO L226 Difference]: Without dead ends: 17 [2022-03-20 13:00:56,911 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-03-20 13:00:56,911 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:56,912 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-20 13:00:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-20 13:00:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-03-20 13:00:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-03-20 13:00:56,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2022-03-20 13:00:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:56,915 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-03-20 13:00:56,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 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) [2022-03-20 13:00:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-03-20 13:00:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 13:00:56,916 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:56,916 INFO L499 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:57,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:57,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8,SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:57,336 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 9 times [2022-03-20 13:00:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:57,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1002412762] [2022-03-20 13:00:57,384 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:57,384 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1630886409, now seen corresponding path program 1 times [2022-03-20 13:00:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737766392] [2022-03-20 13:00:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:57,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_5.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746629419] [2022-03-20 13:00:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:57,400 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:57,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 13:00:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:57,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:57,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 10 times [2022-03-20 13:00:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:57,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539229598] [2022-03-20 13:00:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:57,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539229598] [2022-03-20 13:00:57,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539229598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346108065] [2022-03-20 13:00:57,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:00:57,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:57,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:57,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 13:00:57,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:00:57,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:57,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 13:00:57,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:57,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:57,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346108065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:57,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-20 13:00:57,795 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1002412762] [2022-03-20 13:00:57,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1002412762] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:57,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 13:00:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381436756] [2022-03-20 13:00:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:57,796 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 13:00:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 13:00:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-03-20 13:00:57,797 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:57,901 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-03-20 13:00:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 13:00:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-20 13:00:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:57,903 INFO L225 Difference]: With dead ends: 23 [2022-03-20 13:00:57,903 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 13:00:57,903 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-03-20 13:00:57,904 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:57,904 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 13:00:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-20 13:00:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-03-20 13:00:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-03-20 13:00:57,908 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2022-03-20 13:00:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:57,908 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-03-20 13:00:57,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-03-20 13:00:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 13:00:57,909 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:57,909 INFO L499 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:57,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-20 13:00:58,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:58,315 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 13:00:58,316 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 11 times [2022-03-20 13:00:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:58,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1069738441] [2022-03-20 13:00:58,357 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:58,357 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1571781065, now seen corresponding path program 1 times [2022-03-20 13:00:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:58,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857931202] [2022-03-20 13:00:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:58,366 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_6.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:58,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515425231] [2022-03-20 13:00:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:58,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:58,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 13:00:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:58,434 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:58,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:58,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 12 times [2022-03-20 13:00:58,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:58,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256589721] [2022-03-20 13:00:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:58,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256589721] [2022-03-20 13:00:58,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256589721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:58,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361076551] [2022-03-20 13:00:58,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:00:58,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:58,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:58,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:58,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 13:00:58,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-20 13:00:58,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-20 13:00:58,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:58,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:00:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:58,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361076551] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:00:58,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:00:58,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 21 [2022-03-20 13:00:58,930 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:00:58,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1069738441] [2022-03-20 13:00:58,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1069738441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:00:58,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:00:58,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 13:00:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869538684] [2022-03-20 13:00:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:00:58,931 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 13:00:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 13:00:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-03-20 13:00:58,931 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:00:59,062 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-03-20 13:00:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 13:00:59,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-20 13:00:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:00:59,063 INFO L225 Difference]: With dead ends: 24 [2022-03-20 13:00:59,063 INFO L226 Difference]: Without dead ends: 19 [2022-03-20 13:00:59,064 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-03-20 13:00:59,064 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:00:59,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:00:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-20 13:00:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-03-20 13:00:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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) [2022-03-20 13:00:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-03-20 13:00:59,068 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2022-03-20 13:00:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:00:59,069 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-03-20 13:00:59,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:00:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-03-20 13:00:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 13:00:59,069 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:59,069 INFO L499 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:59,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 13:00:59,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-20 13:00:59,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12,SelfDestructingSolverStorable13 [2022-03-20 13:00:59,475 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 13 times [2022-03-20 13:00:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:59,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1547475024] [2022-03-20 13:00:59,533 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:00:59,533 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:00:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1512675721, now seen corresponding path program 1 times [2022-03-20 13:00:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:59,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794218823] [2022-03-20 13:00:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:59,541 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_7.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:00:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:00:59,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677224836] [2022-03-20 13:00:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:59,567 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 13:00:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:59,611 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:59,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 14 times [2022-03-20 13:00:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:59,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559858682] [2022-03-20 13:00:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:00:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:00:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:00:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559858682] [2022-03-20 13:00:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559858682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:00:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785343868] [2022-03-20 13:00:59,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:00:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:00:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:59,734 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:00:59,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 13:00:59,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:00:59,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:00:59,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-20 13:00:59,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:00:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:00:59,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:00,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785343868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:00,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:00,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2022-03-20 13:01:00,149 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1547475024] [2022-03-20 13:01:00,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1547475024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:00,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:00,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 13:01:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580541698] [2022-03-20 13:01:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:00,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 13:01:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 13:01:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-03-20 13:01:00,151 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:00,311 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-03-20 13:01:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 13:01:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-20 13:01:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:00,312 INFO L225 Difference]: With dead ends: 25 [2022-03-20 13:01:00,313 INFO L226 Difference]: Without dead ends: 20 [2022-03-20 13:01:00,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2022-03-20 13:01:00,314 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:00,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-20 13:01:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-20 13:01:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-03-20 13:01:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-03-20 13:01:00,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2022-03-20 13:01:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:00,319 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-03-20 13:01:00,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-03-20 13:01:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-20 13:01:00,319 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:00,319 INFO L499 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:00,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:00,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-20 13:01:00,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14,SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:00,725 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 15 times [2022-03-20 13:01:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:00,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [258234750] [2022-03-20 13:01:00,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:00,772 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1453570377, now seen corresponding path program 1 times [2022-03-20 13:01:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:00,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700186162] [2022-03-20 13:01:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:00,783 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_8.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:00,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92463734] [2022-03-20 13:01:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:00,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:00,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 13:01:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:00,832 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:00,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 16 times [2022-03-20 13:01:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:00,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38354058] [2022-03-20 13:01:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:00,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38354058] [2022-03-20 13:01:00,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38354058] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797176965] [2022-03-20 13:01:00,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:00,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:00,969 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:00,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 13:01:00,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:00,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:01,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-20 13:01:01,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:01,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:01,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797176965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:01,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:01,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-03-20 13:01:01,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [258234750] [2022-03-20 13:01:01,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [258234750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:01,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:01,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 13:01:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877661090] [2022-03-20 13:01:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:01,277 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 13:01:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 13:01:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-03-20 13:01:01,278 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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) [2022-03-20 13:01:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:01,441 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-03-20 13:01:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 13:01:01,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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 [2022-03-20 13:01:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:01,442 INFO L225 Difference]: With dead ends: 26 [2022-03-20 13:01:01,442 INFO L226 Difference]: Without dead ends: 21 [2022-03-20 13:01:01,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2022-03-20 13:01:01,443 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:01,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-20 13:01:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-03-20 13:01:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-03-20 13:01:01,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2022-03-20 13:01:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:01,447 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-03-20 13:01:01,447 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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) [2022-03-20 13:01:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-03-20 13:01:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 13:01:01,448 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:01,448 INFO L499 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:01,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:01,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:01,848 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16,SelfDestructingSolverStorable17 [2022-03-20 13:01:01,849 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 17 times [2022-03-20 13:01:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:01,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [967081151] [2022-03-20 13:01:01,882 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:01,882 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1394465033, now seen corresponding path program 1 times [2022-03-20 13:01:01,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:01,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245023635] [2022-03-20 13:01:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:01,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:01,886 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_9.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497899387] [2022-03-20 13:01:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:01,894 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:01,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 13:01:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:01,955 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:01,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 18 times [2022-03-20 13:01:01,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:01,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179951728] [2022-03-20 13:01:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:02,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179951728] [2022-03-20 13:01:02,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179951728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:02,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739062600] [2022-03-20 13:01:02,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:02,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:02,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:02,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:02,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-20 13:01:02,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-20 13:01:02,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-20 13:01:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:02,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:02,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739062600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:02,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:02,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 27 [2022-03-20 13:01:02,682 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:02,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [967081151] [2022-03-20 13:01:02,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [967081151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:02,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:02,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 13:01:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059432701] [2022-03-20 13:01:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:02,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 13:01:02,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 13:01:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2022-03-20 13:01:02,687 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:02,871 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-03-20 13:01:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 13:01:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-20 13:01:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:02,872 INFO L225 Difference]: With dead ends: 27 [2022-03-20 13:01:02,872 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 13:01:02,873 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2022-03-20 13:01:02,873 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:02,874 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 13:01:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-20 13:01:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-03-20 13:01:02,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2022-03-20 13:01:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:02,877 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-03-20 13:01:02,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-03-20 13:01:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 13:01:02,878 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:02,878 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:02,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:03,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:03,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:03,284 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 19 times [2022-03-20 13:01:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704732507] [2022-03-20 13:01:03,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:03,331 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1335359689, now seen corresponding path program 1 times [2022-03-20 13:01:03,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:03,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079756363] [2022-03-20 13:01:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:03,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:03,335 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_10.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:03,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033076800] [2022-03-20 13:01:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:03,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:03,342 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-20 13:01:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:03,407 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:03,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 20 times [2022-03-20 13:01:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962832030] [2022-03-20 13:01:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:03,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962832030] [2022-03-20 13:01:03,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962832030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418377577] [2022-03-20 13:01:03,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:03,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:03,567 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:03,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-20 13:01:03,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:03,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:03,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-20 13:01:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:03,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:04,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418377577] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:04,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:04,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 16] total 29 [2022-03-20 13:01:04,078 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704732507] [2022-03-20 13:01:04,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704732507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:04,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:04,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 13:01:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14064120] [2022-03-20 13:01:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:04,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 13:01:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 13:01:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-03-20 13:01:04,079 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2022-03-20 13:01:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:04,286 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-03-20 13:01:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 13:01:04,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 [2022-03-20 13:01:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:04,288 INFO L225 Difference]: With dead ends: 28 [2022-03-20 13:01:04,288 INFO L226 Difference]: Without dead ends: 23 [2022-03-20 13:01:04,289 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1166, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 13:01:04,289 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:04,289 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-20 13:01:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-20 13:01:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-03-20 13:01:04,292 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2022-03-20 13:01:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:04,293 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-03-20 13:01:04,293 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2022-03-20 13:01:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-03-20 13:01:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 13:01:04,293 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:04,293 INFO L499 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:04,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:04,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:04,694 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20,SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:04,694 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 21 times [2022-03-20 13:01:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:04,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [55523362] [2022-03-20 13:01:04,724 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:04,724 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1276254345, now seen corresponding path program 1 times [2022-03-20 13:01:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358499214] [2022-03-20 13:01:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:04,728 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_11.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:04,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302930950] [2022-03-20 13:01:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:04,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:04,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:04,736 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:04,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-20 13:01:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:04,779 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:04,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 22 times [2022-03-20 13:01:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:04,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445683052] [2022-03-20 13:01:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:04,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445683052] [2022-03-20 13:01:04,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445683052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:04,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312313549] [2022-03-20 13:01:04,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:04,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:04,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:04,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:04,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-20 13:01:04,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:04,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:04,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-20 13:01:05,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:05,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:05,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312313549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:05,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:05,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 28 [2022-03-20 13:01:05,419 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [55523362] [2022-03-20 13:01:05,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [55523362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:05,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:05,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 13:01:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269420549] [2022-03-20 13:01:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:05,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 13:01:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 13:01:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-03-20 13:01:05,421 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:05,624 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-03-20 13:01:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 13:01:05,625 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-20 13:01:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:05,625 INFO L225 Difference]: With dead ends: 29 [2022-03-20 13:01:05,625 INFO L226 Difference]: Without dead ends: 24 [2022-03-20 13:01:05,635 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 13:01:05,635 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:05,636 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-20 13:01:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-20 13:01:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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) [2022-03-20 13:01:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-03-20 13:01:05,639 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-03-20 13:01:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:05,639 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-03-20 13:01:05,640 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-03-20 13:01:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 13:01:05,640 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:05,640 INFO L499 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:05,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:05,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-20 13:01:06,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22,SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:06,046 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:06,046 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 23 times [2022-03-20 13:01:06,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:06,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2097901719] [2022-03-20 13:01:06,072 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:06,072 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1217149001, now seen corresponding path program 1 times [2022-03-20 13:01:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:06,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255872679] [2022-03-20 13:01:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:06,079 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_12.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250743645] [2022-03-20 13:01:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:06,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:06,093 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:06,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-20 13:01:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:06,141 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:06,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 24 times [2022-03-20 13:01:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:06,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858654029] [2022-03-20 13:01:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858654029] [2022-03-20 13:01:06,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858654029] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111788259] [2022-03-20 13:01:06,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:06,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:06,336 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:06,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-20 13:01:06,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-20 13:01:06,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 13:01:06,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:06,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:06,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111788259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:06,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:06,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 30 [2022-03-20 13:01:06,843 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2097901719] [2022-03-20 13:01:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2097901719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:06,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 13:01:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15107573] [2022-03-20 13:01:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:06,844 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 13:01:06,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 13:01:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2022-03-20 13:01:06,845 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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) [2022-03-20 13:01:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:07,063 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-03-20 13:01:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 13:01:07,063 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 [2022-03-20 13:01:07,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:07,063 INFO L225 Difference]: With dead ends: 30 [2022-03-20 13:01:07,064 INFO L226 Difference]: Without dead ends: 25 [2022-03-20 13:01:07,064 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2022-03-20 13:01:07,065 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:07,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-20 13:01:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-20 13:01:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-03-20 13:01:07,069 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2022-03-20 13:01:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:07,069 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-03-20 13:01:07,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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) [2022-03-20 13:01:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-03-20 13:01:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 13:01:07,070 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:07,070 INFO L499 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:07,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-20 13:01:07,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-20 13:01:07,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24,SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:07,472 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 25 times [2022-03-20 13:01:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1840124409] [2022-03-20 13:01:07,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:07,524 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1158043657, now seen corresponding path program 1 times [2022-03-20 13:01:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324342230] [2022-03-20 13:01:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:07,529 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_13.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:07,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236718439] [2022-03-20 13:01:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:07,540 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:07,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-20 13:01:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:07,588 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:07,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 26 times [2022-03-20 13:01:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558174921] [2022-03-20 13:01:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:07,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558174921] [2022-03-20 13:01:07,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558174921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286876056] [2022-03-20 13:01:07,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:07,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:07,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:07,796 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:07,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-20 13:01:07,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:07,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:07,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-20 13:01:07,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:07,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:08,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286876056] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:08,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:08,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 32 [2022-03-20 13:01:08,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1840124409] [2022-03-20 13:01:08,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1840124409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:08,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:08,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-20 13:01:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176326171] [2022-03-20 13:01:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:08,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 13:01:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 13:01:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2022-03-20 13:01:08,292 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:08,556 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-03-20 13:01:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 13:01:08,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-03-20 13:01:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:08,557 INFO L225 Difference]: With dead ends: 31 [2022-03-20 13:01:08,557 INFO L226 Difference]: Without dead ends: 26 [2022-03-20 13:01:08,558 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=1507, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 13:01:08,558 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:08,558 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-20 13:01:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-20 13:01:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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) [2022-03-20 13:01:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-03-20 13:01:08,562 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2022-03-20 13:01:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:08,562 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-03-20 13:01:08,562 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:08,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-03-20 13:01:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 13:01:08,563 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:08,563 INFO L499 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:08,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-20 13:01:08,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:08,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26,SelfDestructingSolverStorable27 [2022-03-20 13:01:08,976 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 27 times [2022-03-20 13:01:08,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:08,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [480318886] [2022-03-20 13:01:09,008 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:09,008 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1098938313, now seen corresponding path program 1 times [2022-03-20 13:01:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:09,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402394466] [2022-03-20 13:01:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:09,018 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_14.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:09,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555607036] [2022-03-20 13:01:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:09,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:09,030 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:09,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-20 13:01:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:09,082 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:09,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 28 times [2022-03-20 13:01:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:09,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256081812] [2022-03-20 13:01:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:09,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256081812] [2022-03-20 13:01:09,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256081812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305143930] [2022-03-20 13:01:09,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:09,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:09,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:09,312 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:09,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-20 13:01:09,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:09,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:09,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-20 13:01:09,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:09,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:09,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305143930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:09,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:09,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-03-20 13:01:09,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:09,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [480318886] [2022-03-20 13:01:09,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [480318886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:09,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:09,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 13:01:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578747887] [2022-03-20 13:01:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:09,827 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 13:01:09,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 13:01:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-03-20 13:01:09,828 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:10,119 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-03-20 13:01:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 13:01:10,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-03-20 13:01:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:10,120 INFO L225 Difference]: With dead ends: 32 [2022-03-20 13:01:10,120 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 13:01:10,121 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2022-03-20 13:01:10,121 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:10,121 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 13:01:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 13:01:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-03-20 13:01:10,125 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2022-03-20 13:01:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:10,125 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-03-20 13:01:10,125 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-03-20 13:01:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-20 13:01:10,126 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:10,126 INFO L499 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:10,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:10,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-20 13:01:10,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-20 13:01:10,527 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 29 times [2022-03-20 13:01:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:10,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [115444726] [2022-03-20 13:01:10,561 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:10,561 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1039832969, now seen corresponding path program 1 times [2022-03-20 13:01:10,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:10,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018904749] [2022-03-20 13:01:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:10,564 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_15.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:10,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308788257] [2022-03-20 13:01:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:10,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:10,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:10,571 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:10,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-20 13:01:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:10,629 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:10,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 30 times [2022-03-20 13:01:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:10,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640593663] [2022-03-20 13:01:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:10,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640593663] [2022-03-20 13:01:10,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640593663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15892734] [2022-03-20 13:01:10,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:10,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:10,872 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:10,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-20 13:01:11,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-03-20 13:01:11,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:11,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-20 13:01:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:11,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:11,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15892734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:11,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:11,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 39 [2022-03-20 13:01:11,825 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [115444726] [2022-03-20 13:01:11,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [115444726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:11,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:11,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 13:01:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334131136] [2022-03-20 13:01:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:11,826 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 13:01:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 13:01:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2022-03-20 13:01:11,827 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:12,144 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-03-20 13:01:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 13:01:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-20 13:01:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:12,145 INFO L225 Difference]: With dead ends: 33 [2022-03-20 13:01:12,145 INFO L226 Difference]: Without dead ends: 28 [2022-03-20 13:01:12,146 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=729, Invalid=2241, Unknown=0, NotChecked=0, Total=2970 [2022-03-20 13:01:12,146 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:12,147 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-03-20 13:01:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-03-20 13:01:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 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) [2022-03-20 13:01:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-03-20 13:01:12,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2022-03-20 13:01:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:12,150 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-03-20 13:01:12,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:12,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-03-20 13:01:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-20 13:01:12,151 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:12,151 INFO L499 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:12,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:12,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-20 13:01:12,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30,SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:12,557 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 31 times [2022-03-20 13:01:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:12,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1883037753] [2022-03-20 13:01:12,580 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:12,580 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash -980727625, now seen corresponding path program 1 times [2022-03-20 13:01:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:12,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268730757] [2022-03-20 13:01:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:12,584 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_16.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:12,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540526862] [2022-03-20 13:01:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:12,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:12,594 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:12,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-20 13:01:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:12,637 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:12,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 32 times [2022-03-20 13:01:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:12,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839556266] [2022-03-20 13:01:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:12,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839556266] [2022-03-20 13:01:12,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839556266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476781463] [2022-03-20 13:01:12,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:12,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:12,892 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:12,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-20 13:01:12,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:12,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:12,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-20 13:01:12,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:13,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476781463] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:13,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:13,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 41 [2022-03-20 13:01:13,830 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:13,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1883037753] [2022-03-20 13:01:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1883037753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:13,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:13,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-20 13:01:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908918188] [2022-03-20 13:01:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:13,831 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 13:01:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 13:01:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1221, Unknown=0, NotChecked=0, Total=1640 [2022-03-20 13:01:13,832 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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) [2022-03-20 13:01:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:14,183 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-03-20 13:01:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 13:01:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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 [2022-03-20 13:01:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:14,183 INFO L225 Difference]: With dead ends: 34 [2022-03-20 13:01:14,183 INFO L226 Difference]: Without dead ends: 29 [2022-03-20 13:01:14,185 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=808, Invalid=2498, Unknown=0, NotChecked=0, Total=3306 [2022-03-20 13:01:14,185 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:14,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-20 13:01:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-20 13:01:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 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) [2022-03-20 13:01:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-03-20 13:01:14,189 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2022-03-20 13:01:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:14,189 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-03-20 13:01:14,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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) [2022-03-20 13:01:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-03-20 13:01:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 13:01:14,190 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:14,190 INFO L499 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:14,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:14,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-20 13:01:14,594 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:14,594 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 33 times [2022-03-20 13:01:14,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2121819071] [2022-03-20 13:01:14,619 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:14,619 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -921622281, now seen corresponding path program 1 times [2022-03-20 13:01:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:14,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544991029] [2022-03-20 13:01:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:14,623 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_17.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:14,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831396254] [2022-03-20 13:01:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:14,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:14,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:14,630 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:14,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-20 13:01:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:14,677 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:14,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 34 times [2022-03-20 13:01:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207076163] [2022-03-20 13:01:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:14,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:14,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207076163] [2022-03-20 13:01:14,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207076163] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:14,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442398214] [2022-03-20 13:01:14,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:14,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:14,932 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:14,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-20 13:01:14,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:14,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:14,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-20 13:01:14,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:15,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:15,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442398214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:15,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:15,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 40 [2022-03-20 13:01:15,713 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2121819071] [2022-03-20 13:01:15,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2121819071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:15,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:15,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 13:01:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218452200] [2022-03-20 13:01:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:15,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 13:01:15,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 13:01:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1123, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 13:01:15,715 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:16,104 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-03-20 13:01:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 13:01:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-03-20 13:01:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:16,105 INFO L225 Difference]: With dead ends: 35 [2022-03-20 13:01:16,105 INFO L226 Difference]: Without dead ends: 30 [2022-03-20 13:01:16,106 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=867, Invalid=2439, Unknown=0, NotChecked=0, Total=3306 [2022-03-20 13:01:16,107 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:16,107 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-20 13:01:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-20 13:01:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 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) [2022-03-20 13:01:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-03-20 13:01:16,110 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2022-03-20 13:01:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:16,110 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-03-20 13:01:16,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-03-20 13:01:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 13:01:16,111 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:16,111 INFO L499 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:16,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:16,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-20 13:01:16,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34,SelfDestructingSolverStorable35 [2022-03-20 13:01:16,520 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 35 times [2022-03-20 13:01:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1648053820] [2022-03-20 13:01:16,545 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:16,546 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash -862516937, now seen corresponding path program 1 times [2022-03-20 13:01:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:16,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043933427] [2022-03-20 13:01:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:16,549 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_18.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:16,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64977005] [2022-03-20 13:01:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:16,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:16,556 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:16,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-20 13:01:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:16,604 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:16,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 36 times [2022-03-20 13:01:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:16,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607986028] [2022-03-20 13:01:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607986028] [2022-03-20 13:01:16,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607986028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713768221] [2022-03-20 13:01:16,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:16,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:16,884 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:16,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-20 13:01:17,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-03-20 13:01:17,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:17,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-20 13:01:17,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:17,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:18,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713768221] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:18,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 24] total 45 [2022-03-20 13:01:18,253 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1648053820] [2022-03-20 13:01:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1648053820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:18,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-20 13:01:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144081576] [2022-03-20 13:01:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:18,254 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 13:01:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 13:01:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1475, Unknown=0, NotChecked=0, Total=1980 [2022-03-20 13:01:18,255 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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) [2022-03-20 13:01:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:18,637 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-03-20 13:01:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 13:01:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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 [2022-03-20 13:01:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:18,639 INFO L225 Difference]: With dead ends: 36 [2022-03-20 13:01:18,639 INFO L226 Difference]: Without dead ends: 31 [2022-03-20 13:01:18,640 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2022-03-20 13:01:18,640 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:18,641 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:01:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-20 13:01:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-20 13:01:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-03-20 13:01:18,644 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2022-03-20 13:01:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:18,644 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-03-20 13:01:18,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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) [2022-03-20 13:01:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-03-20 13:01:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 13:01:18,644 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:18,644 INFO L499 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:18,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:18,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:19,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36,SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:19,045 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 37 times [2022-03-20 13:01:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:19,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2137324146] [2022-03-20 13:01:19,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:19,075 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash -803411593, now seen corresponding path program 1 times [2022-03-20 13:01:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:19,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820462570] [2022-03-20 13:01:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:19,078 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_19.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837770199] [2022-03-20 13:01:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:19,089 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:19,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-20 13:01:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:19,137 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:19,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 38 times [2022-03-20 13:01:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814433080] [2022-03-20 13:01:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:19,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814433080] [2022-03-20 13:01:19,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814433080] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:19,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145361390] [2022-03-20 13:01:19,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:19,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:19,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:19,447 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:19,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-20 13:01:19,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:19,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:19,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-20 13:01:19,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:19,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:20,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145361390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:20,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:20,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 25] total 47 [2022-03-20 13:01:20,561 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2137324146] [2022-03-20 13:01:20,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2137324146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:20,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:20,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 13:01:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586870934] [2022-03-20 13:01:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:20,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 13:01:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 13:01:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2022-03-20 13:01:20,563 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:21,022 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-03-20 13:01:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 13:01:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-20 13:01:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:21,023 INFO L225 Difference]: With dead ends: 37 [2022-03-20 13:01:21,023 INFO L226 Difference]: Without dead ends: 32 [2022-03-20 13:01:21,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1069, Invalid=3353, Unknown=0, NotChecked=0, Total=4422 [2022-03-20 13:01:21,025 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:21,025 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-20 13:01:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-20 13:01:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 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) [2022-03-20 13:01:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-03-20 13:01:21,029 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2022-03-20 13:01:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:21,029 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-03-20 13:01:21,029 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-03-20 13:01:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 13:01:21,030 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:21,030 INFO L499 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:21,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-20 13:01:21,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-20 13:01:21,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38,SelfDestructingSolverStorable39 [2022-03-20 13:01:21,436 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 39 times [2022-03-20 13:01:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:21,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1525367547] [2022-03-20 13:01:21,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:21,462 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -744306249, now seen corresponding path program 1 times [2022-03-20 13:01:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:21,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917780861] [2022-03-20 13:01:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:21,468 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_20.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:21,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655393925] [2022-03-20 13:01:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:21,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:21,475 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:21,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-20 13:01:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:21,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:21,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 40 times [2022-03-20 13:01:21,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:21,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513083626] [2022-03-20 13:01:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:21,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513083626] [2022-03-20 13:01:21,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513083626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:21,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696739168] [2022-03-20 13:01:21,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:21,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:21,876 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:21,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-20 13:01:21,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:21,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:21,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-20 13:01:21,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:22,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:22,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696739168] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:22,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:22,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 46 [2022-03-20 13:01:22,755 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:22,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1525367547] [2022-03-20 13:01:22,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1525367547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:22,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:22,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-03-20 13:01:22,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671443525] [2022-03-20 13:01:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:22,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-20 13:01:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-20 13:01:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=1498, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 13:01:22,758 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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) [2022-03-20 13:01:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:23,195 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-03-20 13:01:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 13:01:23,197 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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 [2022-03-20 13:01:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:23,197 INFO L225 Difference]: With dead ends: 38 [2022-03-20 13:01:23,198 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 13:01:23,199 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1137, Invalid=3285, Unknown=0, NotChecked=0, Total=4422 [2022-03-20 13:01:23,199 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:23,199 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 13:01:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 13:01:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-03-20 13:01:23,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2022-03-20 13:01:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:23,207 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-03-20 13:01:23,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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) [2022-03-20 13:01:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-03-20 13:01:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 13:01:23,208 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:23,208 INFO L499 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:23,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:23,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:23,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-20 13:01:23,612 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 41 times [2022-03-20 13:01:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:23,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [994250242] [2022-03-20 13:01:23,641 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:23,641 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -685200905, now seen corresponding path program 1 times [2022-03-20 13:01:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:23,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023962055] [2022-03-20 13:01:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:23,644 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_21.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:23,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712868744] [2022-03-20 13:01:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:23,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:23,651 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:23,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-20 13:01:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:23,699 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:23,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 42 times [2022-03-20 13:01:23,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:23,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347695350] [2022-03-20 13:01:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:23,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:24,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347695350] [2022-03-20 13:01:24,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347695350] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110170370] [2022-03-20 13:01:24,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:24,060 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:24,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-20 13:01:24,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-03-20 13:01:24,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:24,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-20 13:01:24,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:24,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:25,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110170370] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:25,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 27] total 51 [2022-03-20 13:01:25,519 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [994250242] [2022-03-20 13:01:25,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [994250242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:25,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:25,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 13:01:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083411673] [2022-03-20 13:01:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:25,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 13:01:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 13:01:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1901, Unknown=0, NotChecked=0, Total=2550 [2022-03-20 13:01:25,522 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:26,024 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-03-20 13:01:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 13:01:26,024 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-03-20 13:01:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:26,024 INFO L225 Difference]: With dead ends: 39 [2022-03-20 13:01:26,024 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 13:01:26,026 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2022-03-20 13:01:26,026 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:26,027 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 13:01:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-20 13:01:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 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) [2022-03-20 13:01:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-03-20 13:01:26,032 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2022-03-20 13:01:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:26,032 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-03-20 13:01:26,033 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-03-20 13:01:26,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 13:01:26,033 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:26,033 INFO L499 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:26,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-20 13:01:26,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-20 13:01:26,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:26,440 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 43 times [2022-03-20 13:01:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1775854332] [2022-03-20 13:01:26,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:26,465 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash -626095561, now seen corresponding path program 1 times [2022-03-20 13:01:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:26,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221283120] [2022-03-20 13:01:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:26,468 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_22.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088205449] [2022-03-20 13:01:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:26,475 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:26,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-20 13:01:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:26,525 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:26,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 44 times [2022-03-20 13:01:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:26,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386936912] [2022-03-20 13:01:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:26,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386936912] [2022-03-20 13:01:26,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386936912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:26,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233876713] [2022-03-20 13:01:26,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:26,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:26,946 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:26,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-20 13:01:26,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:26,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:26,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-20 13:01:26,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:27,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:28,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233876713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:28,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:28,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 28] total 53 [2022-03-20 13:01:28,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:28,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1775854332] [2022-03-20 13:01:28,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1775854332] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:28,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:28,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-20 13:01:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807749826] [2022-03-20 13:01:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:28,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 13:01:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 13:01:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=2055, Unknown=0, NotChecked=0, Total=2756 [2022-03-20 13:01:28,280 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 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) [2022-03-20 13:01:28,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:28,832 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-03-20 13:01:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-20 13:01:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 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 [2022-03-20 13:01:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:28,833 INFO L225 Difference]: With dead ends: 40 [2022-03-20 13:01:28,833 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 13:01:28,833 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1366, Invalid=4334, Unknown=0, NotChecked=0, Total=5700 [2022-03-20 13:01:28,834 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:28,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 13:01:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-20 13:01:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-03-20 13:01:28,837 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2022-03-20 13:01:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:28,837 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-03-20 13:01:28,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 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) [2022-03-20 13:01:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-03-20 13:01:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-20 13:01:28,838 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:28,838 INFO L499 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:28,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-20 13:01:29,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:29,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44,SelfDestructingSolverStorable45 [2022-03-20 13:01:29,240 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 45 times [2022-03-20 13:01:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:29,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1574880312] [2022-03-20 13:01:29,271 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:29,271 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash -566990217, now seen corresponding path program 1 times [2022-03-20 13:01:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:29,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86892202] [2022-03-20 13:01:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:29,275 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_23.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:29,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26222037] [2022-03-20 13:01:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:29,288 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:29,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-20 13:01:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:29,331 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:29,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 46 times [2022-03-20 13:01:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:29,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720773479] [2022-03-20 13:01:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:29,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720773479] [2022-03-20 13:01:29,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720773479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:29,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054467556] [2022-03-20 13:01:29,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:29,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:29,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:29,740 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:29,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-20 13:01:29,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:29,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:29,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-20 13:01:29,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:29,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:30,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054467556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:30,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 52 [2022-03-20 13:01:30,852 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1574880312] [2022-03-20 13:01:30,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1574880312] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:30,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-20 13:01:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670091582] [2022-03-20 13:01:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:30,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-20 13:01:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-20 13:01:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-03-20 13:01:30,853 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:31,498 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-03-20 13:01:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-20 13:01:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-20 13:01:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:31,499 INFO L225 Difference]: With dead ends: 41 [2022-03-20 13:01:31,499 INFO L226 Difference]: Without dead ends: 36 [2022-03-20 13:01:31,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1443, Invalid=4257, Unknown=0, NotChecked=0, Total=5700 [2022-03-20 13:01:31,500 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:31,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-20 13:01:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-20 13:01:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2022-03-20 13:01:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-03-20 13:01:31,504 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2022-03-20 13:01:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:31,504 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-03-20 13:01:31,504 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-03-20 13:01:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-20 13:01:31,505 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:31,505 INFO L499 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:31,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-20 13:01:31,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-20 13:01:31,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46,SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:31,910 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 47 times [2022-03-20 13:01:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:31,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [377142524] [2022-03-20 13:01:31,935 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:31,935 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash -507884873, now seen corresponding path program 1 times [2022-03-20 13:01:31,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976089659] [2022-03-20 13:01:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:31,938 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_24.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:31,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257660745] [2022-03-20 13:01:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:31,945 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-20 13:01:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:31,992 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:32,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 48 times [2022-03-20 13:01:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:32,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814228384] [2022-03-20 13:01:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814228384] [2022-03-20 13:01:32,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814228384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:32,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246991622] [2022-03-20 13:01:32,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:32,444 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:32,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-20 13:01:32,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-03-20 13:01:32,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:32,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-20 13:01:32,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:32,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:34,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246991622] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:34,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:34,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 30] total 57 [2022-03-20 13:01:34,346 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:34,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [377142524] [2022-03-20 13:01:34,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [377142524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:34,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:34,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-03-20 13:01:34,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346217935] [2022-03-20 13:01:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:34,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-20 13:01:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-20 13:01:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2381, Unknown=0, NotChecked=0, Total=3192 [2022-03-20 13:01:34,348 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 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) [2022-03-20 13:01:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:34,941 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-03-20 13:01:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-20 13:01:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 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 [2022-03-20 13:01:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:34,942 INFO L225 Difference]: With dead ends: 42 [2022-03-20 13:01:34,942 INFO L226 Difference]: Without dead ends: 37 [2022-03-20 13:01:34,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1584, Invalid=5058, Unknown=0, NotChecked=0, Total=6642 [2022-03-20 13:01:34,943 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:34,943 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-20 13:01:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-20 13:01:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-03-20 13:01:34,947 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2022-03-20 13:01:34,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:34,947 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-03-20 13:01:34,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 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) [2022-03-20 13:01:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-03-20 13:01:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 13:01:34,948 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:34,948 INFO L499 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:34,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-20 13:01:35,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-20 13:01:35,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48,SelfDestructingSolverStorable49 [2022-03-20 13:01:35,352 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:35,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 49 times [2022-03-20 13:01:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:35,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1916773163] [2022-03-20 13:01:35,388 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:35,389 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash -448779529, now seen corresponding path program 1 times [2022-03-20 13:01:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:35,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271868371] [2022-03-20 13:01:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:35,393 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_25.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509093737] [2022-03-20 13:01:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:35,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:35,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:35,398 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:35,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-20 13:01:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:35,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:35,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 50 times [2022-03-20 13:01:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:35,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540729697] [2022-03-20 13:01:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:35,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540729697] [2022-03-20 13:01:35,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540729697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:35,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261339231] [2022-03-20 13:01:35,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:35,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:35,948 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:35,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-20 13:01:36,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:36,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-20 13:01:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:36,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:37,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261339231] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:37,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:37,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 56 [2022-03-20 13:01:37,190 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1916773163] [2022-03-20 13:01:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1916773163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:37,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:37,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-03-20 13:01:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839726057] [2022-03-20 13:01:37,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:37,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-20 13:01:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-20 13:01:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2243, Unknown=0, NotChecked=0, Total=3080 [2022-03-20 13:01:37,192 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:37,827 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-03-20 13:01:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-20 13:01:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-03-20 13:01:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:37,828 INFO L225 Difference]: With dead ends: 43 [2022-03-20 13:01:37,828 INFO L226 Difference]: Without dead ends: 38 [2022-03-20 13:01:37,828 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1667, Invalid=4975, Unknown=0, NotChecked=0, Total=6642 [2022-03-20 13:01:37,829 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:37,829 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 13:01:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-20 13:01:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-20 13:01:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 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) [2022-03-20 13:01:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-03-20 13:01:37,833 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2022-03-20 13:01:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:37,833 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-03-20 13:01:37,833 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-03-20 13:01:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 13:01:37,834 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:37,834 INFO L499 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:37,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:38,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-20 13:01:38,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-03-20 13:01:38,239 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 51 times [2022-03-20 13:01:38,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:38,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2122267342] [2022-03-20 13:01:38,268 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:38,269 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -389674185, now seen corresponding path program 1 times [2022-03-20 13:01:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:38,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949883829] [2022-03-20 13:01:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:38,272 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_26.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:38,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758737036] [2022-03-20 13:01:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:38,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:38,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:38,289 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:38,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-20 13:01:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:38,329 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:38,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 52 times [2022-03-20 13:01:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428374795] [2022-03-20 13:01:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428374795] [2022-03-20 13:01:38,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428374795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318735896] [2022-03-20 13:01:38,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:38,818 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:38,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-20 13:01:38,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:38,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:38,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-20 13:01:38,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:39,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318735896] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:40,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:40,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 58 [2022-03-20 13:01:40,134 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2122267342] [2022-03-20 13:01:40,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2122267342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:40,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:40,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-03-20 13:01:40,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548115705] [2022-03-20 13:01:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:40,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-20 13:01:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-20 13:01:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=2410, Unknown=0, NotChecked=0, Total=3306 [2022-03-20 13:01:40,135 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 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) [2022-03-20 13:01:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:40,800 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-03-20 13:01:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-20 13:01:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 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 [2022-03-20 13:01:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:40,801 INFO L225 Difference]: With dead ends: 44 [2022-03-20 13:01:40,801 INFO L226 Difference]: Without dead ends: 39 [2022-03-20 13:01:40,802 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1785, Invalid=5355, Unknown=0, NotChecked=0, Total=7140 [2022-03-20 13:01:40,803 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:40,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 13:01:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-20 13:01:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-20 13:01:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 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) [2022-03-20 13:01:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-03-20 13:01:40,806 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2022-03-20 13:01:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:40,807 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-03-20 13:01:40,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 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) [2022-03-20 13:01:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-03-20 13:01:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 13:01:40,807 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:40,807 INFO L499 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:40,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-20 13:01:41,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-20 13:01:41,223 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52,SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:41,223 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 53 times [2022-03-20 13:01:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:41,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1924196338] [2022-03-20 13:01:41,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:41,245 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -330568841, now seen corresponding path program 1 times [2022-03-20 13:01:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:41,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356821680] [2022-03-20 13:01:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:41,248 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_27.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144091437] [2022-03-20 13:01:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:41,254 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:41,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-20 13:01:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:41,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:41,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 54 times [2022-03-20 13:01:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:41,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148657298] [2022-03-20 13:01:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:41,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148657298] [2022-03-20 13:01:41,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148657298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:41,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219840574] [2022-03-20 13:01:41,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:41,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:41,773 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:41,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-20 13:01:43,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-03-20 13:01:43,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-20 13:01:43,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:44,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:45,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219840574] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:45,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:45,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 60 [2022-03-20 13:01:45,234 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:45,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1924196338] [2022-03-20 13:01:45,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1924196338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:45,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:45,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-20 13:01:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118145449] [2022-03-20 13:01:45,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:45,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-20 13:01:45,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-20 13:01:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=2583, Unknown=0, NotChecked=0, Total=3540 [2022-03-20 13:01:45,236 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:46,002 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-03-20 13:01:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-20 13:01:46,002 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-20 13:01:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:46,003 INFO L225 Difference]: With dead ends: 45 [2022-03-20 13:01:46,003 INFO L226 Difference]: Without dead ends: 40 [2022-03-20 13:01:46,003 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1907, Invalid=5749, Unknown=0, NotChecked=0, Total=7656 [2022-03-20 13:01:46,004 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:46,004 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 148 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 13:01:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-20 13:01:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-03-20 13:01:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 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) [2022-03-20 13:01:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2022-03-20 13:01:46,007 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2022-03-20 13:01:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:46,007 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2022-03-20 13:01:46,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2022-03-20 13:01:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 13:01:46,008 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:46,008 INFO L499 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:46,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-20 13:01:46,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-20 13:01:46,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54,SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:46,411 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 55 times [2022-03-20 13:01:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1649786664] [2022-03-20 13:01:46,441 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:46,441 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -271463497, now seen corresponding path program 1 times [2022-03-20 13:01:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236712340] [2022-03-20 13:01:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:46,444 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_28.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:46,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291437938] [2022-03-20 13:01:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:46,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:46,453 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:46,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-20 13:01:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:46,505 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:46,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 56 times [2022-03-20 13:01:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:46,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604953534] [2022-03-20 13:01:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604953534] [2022-03-20 13:01:47,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604953534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739254944] [2022-03-20 13:01:47,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:01:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:47,064 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:47,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-20 13:01:47,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:01:47,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:47,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-20 13:01:47,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:47,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:48,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739254944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:48,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:48,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 62 [2022-03-20 13:01:48,525 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1649786664] [2022-03-20 13:01:48,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1649786664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:48,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:48,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-20 13:01:48,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728385591] [2022-03-20 13:01:48,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:48,526 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-20 13:01:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-20 13:01:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2022-03-20 13:01:48,527 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 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) [2022-03-20 13:01:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:49,278 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-03-20 13:01:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-20 13:01:49,278 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 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 [2022-03-20 13:01:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:49,279 INFO L225 Difference]: With dead ends: 46 [2022-03-20 13:01:49,279 INFO L226 Difference]: Without dead ends: 41 [2022-03-20 13:01:49,280 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2033, Invalid=6157, Unknown=0, NotChecked=0, Total=8190 [2022-03-20 13:01:49,280 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:49,280 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 158 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 13:01:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-20 13:01:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-20 13:01:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 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) [2022-03-20 13:01:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-03-20 13:01:49,284 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2022-03-20 13:01:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:49,284 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-03-20 13:01:49,284 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 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) [2022-03-20 13:01:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-03-20 13:01:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 13:01:49,287 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:49,287 INFO L499 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:49,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-20 13:01:49,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-20 13:01:49,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:49,695 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 57 times [2022-03-20 13:01:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [194964675] [2022-03-20 13:01:49,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:49,725 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -212358153, now seen corresponding path program 1 times [2022-03-20 13:01:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166609205] [2022-03-20 13:01:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:49,729 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_29.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:49,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452766693] [2022-03-20 13:01:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:49,735 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-20 13:01:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:49,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:49,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 58 times [2022-03-20 13:01:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:49,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604437753] [2022-03-20 13:01:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:50,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:50,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604437753] [2022-03-20 13:01:50,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604437753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:50,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431970478] [2022-03-20 13:01:50,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:01:50,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:50,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:50,399 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:50,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-20 13:01:50,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:01:50,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-20 13:01:50,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:50,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:52,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431970478] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:52,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:52,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 64 [2022-03-20 13:01:52,082 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:52,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [194964675] [2022-03-20 13:01:52,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [194964675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:52,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:52,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-20 13:01:52,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322339069] [2022-03-20 13:01:52,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:52,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-20 13:01:52,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-20 13:01:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=2947, Unknown=0, NotChecked=0, Total=4032 [2022-03-20 13:01:52,084 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:52,926 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-03-20 13:01:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-20 13:01:52,926 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-03-20 13:01:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:52,926 INFO L225 Difference]: With dead ends: 47 [2022-03-20 13:01:52,926 INFO L226 Difference]: Without dead ends: 42 [2022-03-20 13:01:52,927 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2163, Invalid=6579, Unknown=0, NotChecked=0, Total=8742 [2022-03-20 13:01:52,928 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:52,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 153 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 13:01:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-20 13:01:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-20 13:01:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 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) [2022-03-20 13:01:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-03-20 13:01:52,931 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2022-03-20 13:01:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:52,932 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-03-20 13:01:52,932 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-03-20 13:01:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 13:01:52,932 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:52,932 INFO L499 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:52,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-20 13:01:53,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-20 13:01:53,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58,SelfDestructingSolverStorable59 [2022-03-20 13:01:53,340 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 59 times [2022-03-20 13:01:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:53,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [687115581] [2022-03-20 13:01:53,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:53,384 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -153252809, now seen corresponding path program 1 times [2022-03-20 13:01:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:53,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663761912] [2022-03-20 13:01:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:53,387 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_30.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764065629] [2022-03-20 13:01:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:53,394 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:53,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-20 13:01:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:53,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:53,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 60 times [2022-03-20 13:01:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:53,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061326296] [2022-03-20 13:01:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:01:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:01:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:54,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:01:54,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061326296] [2022-03-20 13:01:54,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061326296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:01:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921700417] [2022-03-20 13:01:54,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:01:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:54,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:54,037 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:54,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-20 13:01:56,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-03-20 13:01:56,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:01:56,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-20 13:01:56,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:01:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:56,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:01:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:01:58,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921700417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:01:58,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:01:58,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 36] total 69 [2022-03-20 13:01:58,197 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:01:58,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [687115581] [2022-03-20 13:01:58,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [687115581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:01:58,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:01:58,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-03-20 13:01:58,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125840641] [2022-03-20 13:01:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:01:58,198 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-20 13:01:58,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-20 13:01:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3503, Unknown=0, NotChecked=0, Total=4692 [2022-03-20 13:01:58,199 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 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) [2022-03-20 13:01:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:01:59,157 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-03-20 13:01:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-20 13:01:59,157 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 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 [2022-03-20 13:01:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:01:59,157 INFO L225 Difference]: With dead ends: 48 [2022-03-20 13:01:59,158 INFO L226 Difference]: Without dead ends: 43 [2022-03-20 13:01:59,159 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2334, Invalid=7566, Unknown=0, NotChecked=0, Total=9900 [2022-03-20 13:01:59,159 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:01:59,159 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 13:01:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-20 13:01:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-20 13:01:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:01:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-03-20 13:01:59,163 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2022-03-20 13:01:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:01:59,163 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-03-20 13:01:59,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 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) [2022-03-20 13:01:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-03-20 13:01:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 13:01:59,164 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:01:59,164 INFO L499 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:01:59,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-20 13:01:59,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-20 13:01:59,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:59,568 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:01:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:01:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 61 times [2022-03-20 13:01:59,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:01:59,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1088684500] [2022-03-20 13:01:59,595 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:01:59,595 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:01:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -94147465, now seen corresponding path program 1 times [2022-03-20 13:01:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119468772] [2022-03-20 13:01:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:59,598 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_31.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:01:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:01:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643197235] [2022-03-20 13:01:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:59,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:01:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:01:59,604 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:01:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-20 13:01:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:59,643 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:01:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:01:59,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:01:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 62 times [2022-03-20 13:01:59,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:01:59,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296734901] [2022-03-20 13:01:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:01:59,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:01:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296734901] [2022-03-20 13:02:00,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296734901] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664310933] [2022-03-20 13:02:00,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:02:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:00,238 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:00,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-20 13:02:00,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:02:00,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:00,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-20 13:02:00,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:00,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664310933] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:02,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:02,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 37] total 71 [2022-03-20 13:02:02,540 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1088684500] [2022-03-20 13:02:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1088684500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:02,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-20 13:02:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981628182] [2022-03-20 13:02:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:02,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-20 13:02:02,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:02,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-20 13:02:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3711, Unknown=0, NotChecked=0, Total=4970 [2022-03-20 13:02:02,541 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:03,508 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-03-20 13:02:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-20 13:02:03,508 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-03-20 13:02:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:03,509 INFO L225 Difference]: With dead ends: 49 [2022-03-20 13:02:03,509 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 13:02:03,510 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2473, Invalid=8033, Unknown=0, NotChecked=0, Total=10506 [2022-03-20 13:02:03,510 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:03,510 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 13:02:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 13:02:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-20 13:02:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 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) [2022-03-20 13:02:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-03-20 13:02:03,513 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2022-03-20 13:02:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:03,513 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-03-20 13:02:03,513 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-03-20 13:02:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 13:02:03,514 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:03,514 INFO L499 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:03,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:03,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-20 13:02:03,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:03,923 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 63 times [2022-03-20 13:02:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:03,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [220991665] [2022-03-20 13:02:03,952 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:03,952 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -35042121, now seen corresponding path program 1 times [2022-03-20 13:02:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:03,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847529975] [2022-03-20 13:02:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:03,956 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_32.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928711063] [2022-03-20 13:02:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:03,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:03,961 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:03,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-20 13:02:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:04,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:04,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 64 times [2022-03-20 13:02:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:04,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182270701] [2022-03-20 13:02:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:04,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182270701] [2022-03-20 13:02:04,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182270701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902558932] [2022-03-20 13:02:04,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:02:04,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:04,647 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:04,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-20 13:02:04,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:02:04,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:04,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-20 13:02:04,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:04,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:06,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902558932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:06,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:06,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 70 [2022-03-20 13:02:06,525 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:06,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [220991665] [2022-03-20 13:02:06,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [220991665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:06,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:06,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-20 13:02:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097996358] [2022-03-20 13:02:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:06,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-20 13:02:06,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-20 13:02:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1292, Invalid=3538, Unknown=0, NotChecked=0, Total=4830 [2022-03-20 13:02:06,526 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 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) [2022-03-20 13:02:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:07,454 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-03-20 13:02:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-20 13:02:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 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 [2022-03-20 13:02:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:07,455 INFO L225 Difference]: With dead ends: 50 [2022-03-20 13:02:07,455 INFO L226 Difference]: Without dead ends: 45 [2022-03-20 13:02:07,456 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2577, Invalid=7929, Unknown=0, NotChecked=0, Total=10506 [2022-03-20 13:02:07,456 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:07,457 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 13:02:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-20 13:02:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-03-20 13:02:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 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) [2022-03-20 13:02:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-03-20 13:02:07,459 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2022-03-20 13:02:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:07,459 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-03-20 13:02:07,459 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 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) [2022-03-20 13:02:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-03-20 13:02:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 13:02:07,460 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:07,460 INFO L499 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:07,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-20 13:02:07,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-20 13:02:07,860 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64,SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:07,861 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 65 times [2022-03-20 13:02:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:07,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1576278331] [2022-03-20 13:02:07,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:07,888 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 24063223, now seen corresponding path program 1 times [2022-03-20 13:02:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024044155] [2022-03-20 13:02:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:07,891 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_33.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:07,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433111733] [2022-03-20 13:02:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:07,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:07,897 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:07,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-20 13:02:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:07,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:07,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 66 times [2022-03-20 13:02:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:07,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892957720] [2022-03-20 13:02:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:08,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892957720] [2022-03-20 13:02:08,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892957720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:08,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897957050] [2022-03-20 13:02:08,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:02:08,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:08,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:08,588 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:08,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-20 13:02:09,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-03-20 13:02:09,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-20 13:02:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:09,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:12,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897957050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:12,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:12,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 39] total 75 [2022-03-20 13:02:12,063 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1576278331] [2022-03-20 13:02:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1576278331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:12,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:12,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-20 13:02:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513921168] [2022-03-20 13:02:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:12,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-20 13:02:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-20 13:02:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=4145, Unknown=0, NotChecked=0, Total=5550 [2022-03-20 13:02:12,064 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:13,070 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-03-20 13:02:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 13:02:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-20 13:02:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:13,071 INFO L225 Difference]: With dead ends: 51 [2022-03-20 13:02:13,071 INFO L226 Difference]: Without dead ends: 46 [2022-03-20 13:02:13,072 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2763, Invalid=9009, Unknown=0, NotChecked=0, Total=11772 [2022-03-20 13:02:13,072 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:13,072 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 13:02:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-20 13:02:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-03-20 13:02:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 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) [2022-03-20 13:02:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-03-20 13:02:13,075 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2022-03-20 13:02:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:13,075 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-03-20 13:02:13,075 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-03-20 13:02:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 13:02:13,076 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:13,076 INFO L499 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:13,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:13,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:13,477 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66,SelfDestructingSolverStorable67 [2022-03-20 13:02:13,477 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 67 times [2022-03-20 13:02:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:13,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [385145135] [2022-03-20 13:02:13,501 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:13,502 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash 83168567, now seen corresponding path program 1 times [2022-03-20 13:02:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:13,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150766269] [2022-03-20 13:02:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:13,504 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_34.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231025037] [2022-03-20 13:02:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:13,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:13,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:13,511 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:13,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-20 13:02:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:13,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:13,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:13,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 68 times [2022-03-20 13:02:13,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:13,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861129169] [2022-03-20 13:02:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:13,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861129169] [2022-03-20 13:02:14,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861129169] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81777834] [2022-03-20 13:02:14,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:02:14,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:14,216 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:14,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-20 13:02:14,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:02:14,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:14,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 74 conjunts are in the unsatisfiable core [2022-03-20 13:02:14,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:14,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81777834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:16,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 40] total 77 [2022-03-20 13:02:16,845 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [385145135] [2022-03-20 13:02:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [385145135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:16,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-03-20 13:02:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217063038] [2022-03-20 13:02:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:16,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-20 13:02:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-20 13:02:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4371, Unknown=0, NotChecked=0, Total=5852 [2022-03-20 13:02:16,847 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 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) [2022-03-20 13:02:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:17,892 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-03-20 13:02:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-20 13:02:17,893 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 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 [2022-03-20 13:02:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:17,893 INFO L225 Difference]: With dead ends: 52 [2022-03-20 13:02:17,893 INFO L226 Difference]: Without dead ends: 47 [2022-03-20 13:02:17,894 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2914, Invalid=9518, Unknown=0, NotChecked=0, Total=12432 [2022-03-20 13:02:17,895 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:17,895 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 13:02:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-20 13:02:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-20 13:02:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 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) [2022-03-20 13:02:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-03-20 13:02:17,898 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2022-03-20 13:02:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:17,898 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-03-20 13:02:17,898 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 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) [2022-03-20 13:02:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-03-20 13:02:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 13:02:17,899 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:17,899 INFO L499 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:17,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-03-20 13:02:18,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-20 13:02:18,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68,SelfDestructingSolverStorable69 [2022-03-20 13:02:18,299 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 69 times [2022-03-20 13:02:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:18,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [411730299] [2022-03-20 13:02:18,321 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:18,321 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 142273911, now seen corresponding path program 1 times [2022-03-20 13:02:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:18,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606901348] [2022-03-20 13:02:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:18,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:18,324 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_35.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135861264] [2022-03-20 13:02:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:18,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:18,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:18,329 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:18,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-20 13:02:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:18,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:18,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 70 times [2022-03-20 13:02:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:18,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441175709] [2022-03-20 13:02:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:19,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441175709] [2022-03-20 13:02:19,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441175709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:19,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803728479] [2022-03-20 13:02:19,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:02:19,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:19,087 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:19,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-20 13:02:19,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:02:19,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-20 13:02:19,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:19,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803728479] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:21,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:21,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 76 [2022-03-20 13:02:21,281 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [411730299] [2022-03-20 13:02:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [411730299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:21,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:21,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-03-20 13:02:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037261931] [2022-03-20 13:02:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:21,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-20 13:02:21,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-20 13:02:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=4183, Unknown=0, NotChecked=0, Total=5700 [2022-03-20 13:02:21,283 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:22,390 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-03-20 13:02:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-20 13:02:22,390 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-03-20 13:02:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:22,390 INFO L225 Difference]: With dead ends: 53 [2022-03-20 13:02:22,391 INFO L226 Difference]: Without dead ends: 48 [2022-03-20 13:02:22,392 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3027, Invalid=9405, Unknown=0, NotChecked=0, Total=12432 [2022-03-20 13:02:22,392 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:22,392 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 188 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 13:02:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-20 13:02:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-03-20 13:02:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 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) [2022-03-20 13:02:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-03-20 13:02:22,395 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2022-03-20 13:02:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:22,396 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-03-20 13:02:22,396 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-03-20 13:02:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 13:02:22,396 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:22,396 INFO L499 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:22,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-20 13:02:22,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:22,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:22,799 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 71 times [2022-03-20 13:02:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:22,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334656754] [2022-03-20 13:02:22,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:22,827 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash 201379255, now seen corresponding path program 1 times [2022-03-20 13:02:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:22,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863908528] [2022-03-20 13:02:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:22,831 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_36.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120633730] [2022-03-20 13:02:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:22,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:22,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:22,837 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:22,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-20 13:02:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:22,890 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:22,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 72 times [2022-03-20 13:02:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862669417] [2022-03-20 13:02:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:23,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:23,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862669417] [2022-03-20 13:02:23,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862669417] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:23,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772151684] [2022-03-20 13:02:23,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:02:23,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:23,611 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:23,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-20 13:02:25,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-03-20 13:02:25,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:25,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-20 13:02:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:25,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:28,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772151684] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:28,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:28,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 42] total 81 [2022-03-20 13:02:28,470 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:28,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334656754] [2022-03-20 13:02:28,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334656754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:28,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:28,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-03-20 13:02:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650971838] [2022-03-20 13:02:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:28,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-20 13:02:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-20 13:02:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4841, Unknown=0, NotChecked=0, Total=6480 [2022-03-20 13:02:28,472 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 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) [2022-03-20 13:02:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:29,686 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-03-20 13:02:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-20 13:02:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 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 [2022-03-20 13:02:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:29,686 INFO L225 Difference]: With dead ends: 54 [2022-03-20 13:02:29,686 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 13:02:29,688 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3228, Invalid=10578, Unknown=0, NotChecked=0, Total=13806 [2022-03-20 13:02:29,688 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:29,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 148 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 13:02:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 13:02:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-20 13:02:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-03-20 13:02:29,692 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2022-03-20 13:02:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:29,692 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-03-20 13:02:29,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 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) [2022-03-20 13:02:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-03-20 13:02:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 13:02:29,693 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:29,693 INFO L499 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:29,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-20 13:02:29,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-20 13:02:30,099 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72,SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:30,099 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 73 times [2022-03-20 13:02:30,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:30,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [920788644] [2022-03-20 13:02:30,122 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:30,122 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 260484599, now seen corresponding path program 1 times [2022-03-20 13:02:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536562730] [2022-03-20 13:02:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:30,125 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_37.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506491110] [2022-03-20 13:02:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:30,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:30,130 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:30,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-20 13:02:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:30,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:30,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 74 times [2022-03-20 13:02:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:30,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80748840] [2022-03-20 13:02:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:30,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80748840] [2022-03-20 13:02:30,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80748840] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:30,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431961191] [2022-03-20 13:02:30,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:02:30,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:30,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:30,998 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:30,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-20 13:02:31,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:02:31,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:31,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-20 13:02:31,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:31,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:34,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431961191] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:34,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:34,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 43] total 83 [2022-03-20 13:02:34,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:34,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [920788644] [2022-03-20 13:02:34,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [920788644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:34,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:34,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-03-20 13:02:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914459597] [2022-03-20 13:02:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:34,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-20 13:02:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-20 13:02:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=5085, Unknown=0, NotChecked=0, Total=6806 [2022-03-20 13:02:34,063 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:35,283 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-03-20 13:02:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-20 13:02:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-03-20 13:02:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:35,284 INFO L225 Difference]: With dead ends: 55 [2022-03-20 13:02:35,284 INFO L226 Difference]: Without dead ends: 50 [2022-03-20 13:02:35,285 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3391, Invalid=11129, Unknown=0, NotChecked=0, Total=14520 [2022-03-20 13:02:35,285 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:35,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 13:02:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-20 13:02:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-03-20 13:02:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 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) [2022-03-20 13:02:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-03-20 13:02:35,289 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2022-03-20 13:02:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:35,289 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-03-20 13:02:35,289 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-03-20 13:02:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 13:02:35,289 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:35,290 INFO L499 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:35,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:35,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-20 13:02:35,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:35,695 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:35,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 75 times [2022-03-20 13:02:35,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:35,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [963894541] [2022-03-20 13:02:35,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:35,718 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 319589943, now seen corresponding path program 1 times [2022-03-20 13:02:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:35,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778759376] [2022-03-20 13:02:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:35,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:35,721 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_38.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:35,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906028843] [2022-03-20 13:02:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:35,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:35,726 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:35,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-20 13:02:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:35,778 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:35,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 76 times [2022-03-20 13:02:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:35,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417685343] [2022-03-20 13:02:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:35,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:36,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:36,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417685343] [2022-03-20 13:02:36,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417685343] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:36,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965827520] [2022-03-20 13:02:36,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:02:36,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:36,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:36,627 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:36,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-20 13:02:36,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:02:36,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:36,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-20 13:02:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:36,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965827520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:39,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 82 [2022-03-20 13:02:39,078 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [963894541] [2022-03-20 13:02:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [963894541] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:39,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-03-20 13:02:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158257199] [2022-03-20 13:02:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:39,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-20 13:02:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-20 13:02:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1760, Invalid=4882, Unknown=0, NotChecked=0, Total=6642 [2022-03-20 13:02:39,080 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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) [2022-03-20 13:02:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:40,312 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-03-20 13:02:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-20 13:02:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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 [2022-03-20 13:02:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:40,313 INFO L225 Difference]: With dead ends: 56 [2022-03-20 13:02:40,313 INFO L226 Difference]: Without dead ends: 51 [2022-03-20 13:02:40,315 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3513, Invalid=11007, Unknown=0, NotChecked=0, Total=14520 [2022-03-20 13:02:40,315 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:40,315 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 13:02:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-20 13:02:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-03-20 13:02:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 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) [2022-03-20 13:02:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-03-20 13:02:40,319 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2022-03-20 13:02:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:40,319 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-03-20 13:02:40,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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) [2022-03-20 13:02:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-03-20 13:02:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 13:02:40,319 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:40,320 INFO L499 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:40,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:40,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-20 13:02:40,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76,SelfDestructingSolverStorable77 [2022-03-20 13:02:40,725 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 77 times [2022-03-20 13:02:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:40,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1468922320] [2022-03-20 13:02:40,746 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:40,746 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash 378695287, now seen corresponding path program 1 times [2022-03-20 13:02:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:40,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692766510] [2022-03-20 13:02:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:40,749 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_39.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:40,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410844436] [2022-03-20 13:02:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:40,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:40,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:40,754 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:40,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-20 13:02:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:40,789 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:40,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 78 times [2022-03-20 13:02:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:40,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691936840] [2022-03-20 13:02:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:41,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691936840] [2022-03-20 13:02:41,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691936840] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:41,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330825760] [2022-03-20 13:02:41,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:02:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:41,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:41,728 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:41,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-20 13:02:44,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-20 13:02:44,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:44,617 WARN L261 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-20 13:02:44,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:44,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:47,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330825760] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:47,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:47,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 45] total 87 [2022-03-20 13:02:47,913 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1468922320] [2022-03-20 13:02:47,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1468922320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:47,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:47,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-03-20 13:02:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781868167] [2022-03-20 13:02:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:47,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-20 13:02:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-20 13:02:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5591, Unknown=0, NotChecked=0, Total=7482 [2022-03-20 13:02:47,915 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:49,232 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-03-20 13:02:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-20 13:02:49,233 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-03-20 13:02:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:49,233 INFO L225 Difference]: With dead ends: 57 [2022-03-20 13:02:49,233 INFO L226 Difference]: Without dead ends: 52 [2022-03-20 13:02:49,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3729, Invalid=12273, Unknown=0, NotChecked=0, Total=16002 [2022-03-20 13:02:49,235 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:49,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 13:02:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-20 13:02:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-20 13:02:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 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) [2022-03-20 13:02:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-03-20 13:02:49,239 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2022-03-20 13:02:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:49,239 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-03-20 13:02:49,239 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-03-20 13:02:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 13:02:49,239 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:49,240 INFO L499 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:49,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-20 13:02:49,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-03-20 13:02:49,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:49,644 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 79 times [2022-03-20 13:02:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:49,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1994766591] [2022-03-20 13:02:49,664 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:49,664 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 437800631, now seen corresponding path program 1 times [2022-03-20 13:02:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843367815] [2022-03-20 13:02:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:49,668 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_40.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:49,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133351389] [2022-03-20 13:02:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:49,673 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:49,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-20 13:02:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:49,714 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:49,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 80 times [2022-03-20 13:02:49,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479729342] [2022-03-20 13:02:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:49,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:50,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479729342] [2022-03-20 13:02:50,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479729342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:50,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925901973] [2022-03-20 13:02:50,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:02:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:50,551 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:50,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-20 13:02:50,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:02:50,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:50,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 83 conjunts are in the unsatisfiable core [2022-03-20 13:02:50,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:50,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:53,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925901973] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:53,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:53,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 86 [2022-03-20 13:02:53,521 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:53,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1994766591] [2022-03-20 13:02:53,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1994766591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:53,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:53,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-03-20 13:02:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430928334] [2022-03-20 13:02:53,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:53,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-20 13:02:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-20 13:02:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1932, Invalid=5378, Unknown=0, NotChecked=0, Total=7310 [2022-03-20 13:02:53,523 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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) [2022-03-20 13:02:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:02:54,892 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-03-20 13:02:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-20 13:02:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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 [2022-03-20 13:02:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:02:54,892 INFO L225 Difference]: With dead ends: 58 [2022-03-20 13:02:54,893 INFO L226 Difference]: Without dead ends: 53 [2022-03-20 13:02:54,894 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3857, Invalid=12145, Unknown=0, NotChecked=0, Total=16002 [2022-03-20 13:02:54,894 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 13:02:54,894 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 13:02:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-20 13:02:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-20 13:02:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:02:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-03-20 13:02:54,898 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2022-03-20 13:02:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:02:54,899 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-03-20 13:02:54,899 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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) [2022-03-20 13:02:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-03-20 13:02:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 13:02:54,899 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:02:54,899 INFO L499 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:02:54,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-20 13:02:55,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-20 13:02:55,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:55,304 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:02:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:02:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 81 times [2022-03-20 13:02:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [166054230] [2022-03-20 13:02:55,330 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:02:55,331 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:02:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 496905975, now seen corresponding path program 1 times [2022-03-20 13:02:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977130868] [2022-03-20 13:02:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:55,334 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_41.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:02:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:02:55,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050856124] [2022-03-20 13:02:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:55,339 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:55,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-20 13:02:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:55,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:02:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:02:55,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:02:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 82 times [2022-03-20 13:02:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:02:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449285670] [2022-03-20 13:02:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:02:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:02:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:02:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:02:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:02:56,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449285670] [2022-03-20 13:02:56,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449285670] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:02:56,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760979925] [2022-03-20 13:02:56,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:02:56,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:02:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:02:56,319 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:02:56,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-20 13:02:56,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:02:56,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:02:56,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 85 conjunts are in the unsatisfiable core [2022-03-20 13:02:56,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:02:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:56,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:02:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:02:59,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760979925] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:02:59,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:02:59,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 88 [2022-03-20 13:02:59,204 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:02:59,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [166054230] [2022-03-20 13:02:59,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [166054230] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:02:59,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:02:59,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-03-20 13:02:59,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426850915] [2022-03-20 13:02:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:02:59,204 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-20 13:02:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:02:59,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-20 13:02:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2021, Invalid=5635, Unknown=0, NotChecked=0, Total=7656 [2022-03-20 13:02:59,205 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:00,615 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-03-20 13:03:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-20 13:03:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-20 13:03:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:00,617 INFO L225 Difference]: With dead ends: 59 [2022-03-20 13:03:00,617 INFO L226 Difference]: Without dead ends: 54 [2022-03-20 13:03:00,618 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4035, Invalid=12735, Unknown=0, NotChecked=0, Total=16770 [2022-03-20 13:03:00,618 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:00,618 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 13:03:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-20 13:03:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-20 13:03:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 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) [2022-03-20 13:03:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-03-20 13:03:00,621 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2022-03-20 13:03:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:00,622 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-03-20 13:03:00,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-03-20 13:03:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 13:03:00,622 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:00,622 INFO L499 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:00,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-20 13:03:00,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-20 13:03:01,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82,SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:01,026 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 83 times [2022-03-20 13:03:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:01,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1509687988] [2022-03-20 13:03:01,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:01,054 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash 556011319, now seen corresponding path program 1 times [2022-03-20 13:03:01,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:01,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503777692] [2022-03-20 13:03:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:01,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:01,057 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_42.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:01,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547777656] [2022-03-20 13:03:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:01,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:01,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:01,062 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:01,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-20 13:03:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:01,118 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:01,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 84 times [2022-03-20 13:03:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:01,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045936586] [2022-03-20 13:03:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:02,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:02,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045936586] [2022-03-20 13:03:02,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045936586] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:02,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351579099] [2022-03-20 13:03:02,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:03:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:02,081 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:02,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-20 13:03:04,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-03-20 13:03:04,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:04,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-20 13:03:04,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:05,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:08,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351579099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:08,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:08,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 48] total 93 [2022-03-20 13:03:08,678 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:08,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1509687988] [2022-03-20 13:03:08,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1509687988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:08,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:08,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-03-20 13:03:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332479021] [2022-03-20 13:03:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:08,678 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-20 13:03:08,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-20 13:03:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6395, Unknown=0, NotChecked=0, Total=8556 [2022-03-20 13:03:08,680 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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) [2022-03-20 13:03:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:10,219 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-03-20 13:03:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-20 13:03:10,219 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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 [2022-03-20 13:03:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:10,220 INFO L225 Difference]: With dead ends: 60 [2022-03-20 13:03:10,220 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 13:03:10,221 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4266, Invalid=14094, Unknown=0, NotChecked=0, Total=18360 [2022-03-20 13:03:10,221 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:10,222 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 13:03:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 13:03:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-20 13:03:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-03-20 13:03:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-03-20 13:03:10,225 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2022-03-20 13:03:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:10,226 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-03-20 13:03:10,226 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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) [2022-03-20 13:03:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-03-20 13:03:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 13:03:10,226 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:10,226 INFO L499 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:10,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:10,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-03-20 13:03:10,633 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:10,633 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 85 times [2022-03-20 13:03:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:10,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1708564466] [2022-03-20 13:03:10,656 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:10,656 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:10,656 INFO L85 PathProgramCache]: Analyzing trace with hash 615116663, now seen corresponding path program 1 times [2022-03-20 13:03:10,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:10,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146109676] [2022-03-20 13:03:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:10,659 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_43.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:10,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023202810] [2022-03-20 13:03:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:10,665 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:10,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-20 13:03:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:10,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:10,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 86 times [2022-03-20 13:03:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:10,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991235940] [2022-03-20 13:03:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:10,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:11,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:11,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991235940] [2022-03-20 13:03:11,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991235940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:11,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291783099] [2022-03-20 13:03:11,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:03:11,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:11,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:11,795 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:11,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-20 13:03:11,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:03:11,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:11,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-20 13:03:11,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:12,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:14,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291783099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:14,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:14,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 92 [2022-03-20 13:03:14,876 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:14,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1708564466] [2022-03-20 13:03:14,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1708564466] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:14,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:14,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-03-20 13:03:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855702391] [2022-03-20 13:03:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:14,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-20 13:03:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-20 13:03:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2205, Invalid=6167, Unknown=0, NotChecked=0, Total=8372 [2022-03-20 13:03:14,878 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:16,428 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-03-20 13:03:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-20 13:03:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-03-20 13:03:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:16,429 INFO L225 Difference]: With dead ends: 61 [2022-03-20 13:03:16,429 INFO L226 Difference]: Without dead ends: 56 [2022-03-20 13:03:16,430 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4403, Invalid=13957, Unknown=0, NotChecked=0, Total=18360 [2022-03-20 13:03:16,431 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:16,431 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 233 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 13:03:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-20 13:03:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-20 13:03:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 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) [2022-03-20 13:03:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-03-20 13:03:16,435 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2022-03-20 13:03:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:16,435 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-03-20 13:03:16,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-03-20 13:03:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 13:03:16,435 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:16,435 INFO L499 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:16,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:16,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:16,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:16,836 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 87 times [2022-03-20 13:03:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:16,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [932532317] [2022-03-20 13:03:16,856 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:16,857 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 674222007, now seen corresponding path program 1 times [2022-03-20 13:03:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:16,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137118220] [2022-03-20 13:03:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:16,863 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_44.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:16,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123574271] [2022-03-20 13:03:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:16,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:16,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:16,868 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:16,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-20 13:03:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:16,914 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:16,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 88 times [2022-03-20 13:03:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286378304] [2022-03-20 13:03:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286378304] [2022-03-20 13:03:17,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286378304] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740979108] [2022-03-20 13:03:17,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:03:17,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:17,906 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:17,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-20 13:03:18,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:03:18,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:18,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 91 conjunts are in the unsatisfiable core [2022-03-20 13:03:18,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:18,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:21,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740979108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:21,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:21,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 94 [2022-03-20 13:03:21,172 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [932532317] [2022-03-20 13:03:21,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [932532317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:21,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:21,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-03-20 13:03:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109482732] [2022-03-20 13:03:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:21,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-20 13:03:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:21,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-20 13:03:21,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2300, Invalid=6442, Unknown=0, NotChecked=0, Total=8742 [2022-03-20 13:03:21,174 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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) [2022-03-20 13:03:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:22,789 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-03-20 13:03:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-20 13:03:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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 [2022-03-20 13:03:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:22,790 INFO L225 Difference]: With dead ends: 62 [2022-03-20 13:03:22,790 INFO L226 Difference]: Without dead ends: 57 [2022-03-20 13:03:22,791 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4593, Invalid=14589, Unknown=0, NotChecked=0, Total=19182 [2022-03-20 13:03:22,792 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:22,792 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 13:03:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-20 13:03:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-20 13:03:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 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) [2022-03-20 13:03:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-03-20 13:03:22,796 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2022-03-20 13:03:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:22,796 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-03-20 13:03:22,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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) [2022-03-20 13:03:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-03-20 13:03:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 13:03:22,797 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:22,797 INFO L499 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:22,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:23,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-20 13:03:23,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88,SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:23,208 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 89 times [2022-03-20 13:03:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:23,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [239454441] [2022-03-20 13:03:23,238 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:23,239 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 733327351, now seen corresponding path program 1 times [2022-03-20 13:03:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:23,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440550456] [2022-03-20 13:03:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:23,242 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_45.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:23,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183049953] [2022-03-20 13:03:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:23,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:23,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:23,246 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:23,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-20 13:03:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:23,297 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:23,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 90 times [2022-03-20 13:03:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970129572] [2022-03-20 13:03:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:23,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970129572] [2022-03-20 13:03:24,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970129572] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816299153] [2022-03-20 13:03:24,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:03:24,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:24,390 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:24,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-20 13:03:33,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2022-03-20 13:03:33,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:33,461 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 93 conjunts are in the unsatisfiable core [2022-03-20 13:03:33,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:33,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:36,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816299153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:36,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:36,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 96 [2022-03-20 13:03:36,756 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:36,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [239454441] [2022-03-20 13:03:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [239454441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:36,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-03-20 13:03:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170663024] [2022-03-20 13:03:36,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:36,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-20 13:03:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-20 13:03:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2397, Invalid=6723, Unknown=0, NotChecked=0, Total=9120 [2022-03-20 13:03:36,758 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:38,495 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-03-20 13:03:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-20 13:03:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-03-20 13:03:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:38,496 INFO L225 Difference]: With dead ends: 63 [2022-03-20 13:03:38,496 INFO L226 Difference]: Without dead ends: 58 [2022-03-20 13:03:38,498 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4787, Invalid=15235, Unknown=0, NotChecked=0, Total=20022 [2022-03-20 13:03:38,498 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:38,498 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 13:03:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-03-20 13:03:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-03-20 13:03:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 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) [2022-03-20 13:03:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-03-20 13:03:38,502 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2022-03-20 13:03:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:38,502 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-03-20 13:03:38,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-03-20 13:03:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 13:03:38,503 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:38,503 INFO L499 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:38,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:38,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-20 13:03:38,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:38,908 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 91 times [2022-03-20 13:03:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:38,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1748511863] [2022-03-20 13:03:38,930 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:38,930 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash 792432695, now seen corresponding path program 1 times [2022-03-20 13:03:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:38,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345701579] [2022-03-20 13:03:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:38,932 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_46.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:38,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273716996] [2022-03-20 13:03:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:38,937 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:38,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-20 13:03:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:38,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:38,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 92 times [2022-03-20 13:03:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:38,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37835977] [2022-03-20 13:03:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:40,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37835977] [2022-03-20 13:03:40,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37835977] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:40,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538947571] [2022-03-20 13:03:40,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:03:40,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:40,015 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:40,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-20 13:03:40,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:03:40,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:40,126 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-20 13:03:40,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:40,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:43,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538947571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:43,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:43,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-03-20 13:03:43,526 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:43,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1748511863] [2022-03-20 13:03:43,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1748511863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:43,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:43,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-03-20 13:03:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512266833] [2022-03-20 13:03:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:43,527 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-20 13:03:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-20 13:03:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-03-20 13:03:43,528 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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) [2022-03-20 13:03:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:45,246 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-03-20 13:03:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-20 13:03:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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 [2022-03-20 13:03:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:45,247 INFO L225 Difference]: With dead ends: 64 [2022-03-20 13:03:45,247 INFO L226 Difference]: Without dead ends: 59 [2022-03-20 13:03:45,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4985, Invalid=15895, Unknown=0, NotChecked=0, Total=20880 [2022-03-20 13:03:45,249 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:45,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 13:03:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-20 13:03:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-20 13:03:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-03-20 13:03:45,252 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2022-03-20 13:03:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:45,253 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-03-20 13:03:45,253 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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) [2022-03-20 13:03:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-03-20 13:03:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 13:03:45,253 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:45,253 INFO L499 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:45,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:45,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:45,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:45,658 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 93 times [2022-03-20 13:03:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:45,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [374172164] [2022-03-20 13:03:45,681 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:45,682 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 851538039, now seen corresponding path program 1 times [2022-03-20 13:03:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:45,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396009330] [2022-03-20 13:03:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:45,684 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_47.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:45,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739194064] [2022-03-20 13:03:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:45,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:45,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:45,688 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:45,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-20 13:03:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:45,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:45,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 94 times [2022-03-20 13:03:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:45,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625163551] [2022-03-20 13:03:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:46,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625163551] [2022-03-20 13:03:46,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625163551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937064194] [2022-03-20 13:03:46,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:03:46,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:46,808 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:46,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-20 13:03:46,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:03:46,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:03:46,919 WARN L261 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 97 conjunts are in the unsatisfiable core [2022-03-20 13:03:46,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:03:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:47,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:03:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:50,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937064194] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:03:50,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:03:50,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 100 [2022-03-20 13:03:50,483 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:03:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [374172164] [2022-03-20 13:03:50,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [374172164] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:03:50,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:03:50,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-03-20 13:03:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694073596] [2022-03-20 13:03:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:03:50,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-20 13:03:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-20 13:03:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2597, Invalid=7303, Unknown=0, NotChecked=0, Total=9900 [2022-03-20 13:03:50,485 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:03:52,329 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-03-20 13:03:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-20 13:03:52,330 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-03-20 13:03:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:03:52,330 INFO L225 Difference]: With dead ends: 65 [2022-03-20 13:03:52,330 INFO L226 Difference]: Without dead ends: 60 [2022-03-20 13:03:52,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5187, Invalid=16569, Unknown=0, NotChecked=0, Total=21756 [2022-03-20 13:03:52,332 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 13:03:52,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 13:03:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-20 13:03:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-03-20 13:03:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 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) [2022-03-20 13:03:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-03-20 13:03:52,336 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2022-03-20 13:03:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:03:52,336 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-03-20 13:03:52,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:03:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-03-20 13:03:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 13:03:52,337 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:03:52,337 INFO L499 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:03:52,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-20 13:03:52,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-20 13:03:52,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:52,751 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:03:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:03:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 95 times [2022-03-20 13:03:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:03:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1016023964] [2022-03-20 13:03:52,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:03:52,773 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:03:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 910643383, now seen corresponding path program 1 times [2022-03-20 13:03:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:52,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745598672] [2022-03-20 13:03:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:52,776 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_48.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:03:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:03:52,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655245710] [2022-03-20 13:03:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:52,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:52,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:52,780 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:52,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-20 13:03:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:52,817 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:03:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:03:52,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:03:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 96 times [2022-03-20 13:03:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:03:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569143943] [2022-03-20 13:03:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:03:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:03:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:03:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:03:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:03:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:03:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569143943] [2022-03-20 13:03:53,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569143943] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:03:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366561751] [2022-03-20 13:03:53,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:03:53,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:03:53,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:03:53,936 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:03:53,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-20 13:04:00,533 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-03-20 13:04:00,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:00,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 102 conjunts are in the unsatisfiable core [2022-03-20 13:04:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:00,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:05,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366561751] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:05,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:05,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 54] total 105 [2022-03-20 13:04:05,380 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1016023964] [2022-03-20 13:04:05,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1016023964] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:05,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:05,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-03-20 13:04:05,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717720645] [2022-03-20 13:04:05,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:05,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-20 13:04:05,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-20 13:04:05,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=8165, Unknown=0, NotChecked=0, Total=10920 [2022-03-20 13:04:05,382 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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) [2022-03-20 13:04:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:04:07,380 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-03-20 13:04:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-20 13:04:07,380 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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 [2022-03-20 13:04:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:04:07,381 INFO L225 Difference]: With dead ends: 66 [2022-03-20 13:04:07,381 INFO L226 Difference]: Without dead ends: 61 [2022-03-20 13:04:07,382 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5448, Invalid=18114, Unknown=0, NotChecked=0, Total=23562 [2022-03-20 13:04:07,382 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 13:04:07,382 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 213 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 13:04:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-20 13:04:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-20 13:04:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 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) [2022-03-20 13:04:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-03-20 13:04:07,386 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2022-03-20 13:04:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:04:07,386 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-03-20 13:04:07,386 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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) [2022-03-20 13:04:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-03-20 13:04:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 13:04:07,387 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:04:07,387 INFO L499 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:04:07,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-03-20 13:04:07,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-03-20 13:04:07,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96,SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:07,792 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:04:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:04:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 97 times [2022-03-20 13:04:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:07,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [100784059] [2022-03-20 13:04:07,816 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:04:07,817 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:04:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 969748727, now seen corresponding path program 1 times [2022-03-20 13:04:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286427015] [2022-03-20 13:04:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:07,819 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_49.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:04:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:04:07,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678373250] [2022-03-20 13:04:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:07,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:07,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:07,824 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:07,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-20 13:04:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:07,883 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:04:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:07,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:04:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 98 times [2022-03-20 13:04:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355178013] [2022-03-20 13:04:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:04:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:04:09,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355178013] [2022-03-20 13:04:09,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355178013] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:04:09,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297058906] [2022-03-20 13:04:09,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:04:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:09,085 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:09,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-20 13:04:09,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:04:09,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:09,125 WARN L261 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 104 conjunts are in the unsatisfiable core [2022-03-20 13:04:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:09,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:14,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297058906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:14,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:14,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 55] total 107 [2022-03-20 13:04:14,138 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:14,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [100784059] [2022-03-20 13:04:14,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [100784059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:14,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:14,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-03-20 13:04:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986554632] [2022-03-20 13:04:14,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:14,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-20 13:04:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-20 13:04:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8481, Unknown=0, NotChecked=0, Total=11342 [2022-03-20 13:04:14,140 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:04:16,183 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-03-20 13:04:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-20 13:04:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-03-20 13:04:16,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:04:16,188 INFO L225 Difference]: With dead ends: 67 [2022-03-20 13:04:16,188 INFO L226 Difference]: Without dead ends: 62 [2022-03-20 13:04:16,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5659, Invalid=18833, Unknown=0, NotChecked=0, Total=24492 [2022-03-20 13:04:16,190 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 13:04:16,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 13:04:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-20 13:04:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-20 13:04:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 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) [2022-03-20 13:04:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2022-03-20 13:04:16,194 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2022-03-20 13:04:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:04:16,194 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2022-03-20 13:04:16,194 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2022-03-20 13:04:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 13:04:16,195 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:04:16,195 INFO L499 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:04:16,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-03-20 13:04:16,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-03-20 13:04:16,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98,SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:16,603 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:04:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:04:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 99 times [2022-03-20 13:04:16,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:16,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [481968449] [2022-03-20 13:04:16,627 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:04:16,628 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:04:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1028854071, now seen corresponding path program 1 times [2022-03-20 13:04:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:16,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851683266] [2022-03-20 13:04:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:16,630 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_50.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:04:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:04:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879910192] [2022-03-20 13:04:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:16,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:16,635 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:16,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-20 13:04:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:16,681 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:04:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:16,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:04:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 100 times [2022-03-20 13:04:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:16,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825114011] [2022-03-20 13:04:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:04:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:17,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:04:17,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825114011] [2022-03-20 13:04:17,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825114011] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:04:17,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557551250] [2022-03-20 13:04:17,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:04:17,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:17,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:17,904 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:17,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-20 13:04:17,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:04:17,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:17,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 103 conjunts are in the unsatisfiable core [2022-03-20 13:04:17,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:18,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:22,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557551250] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:22,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:22,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 106 [2022-03-20 13:04:22,041 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:22,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [481968449] [2022-03-20 13:04:22,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [481968449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:22,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:22,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-03-20 13:04:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669160685] [2022-03-20 13:04:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:22,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-20 13:04:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-20 13:04:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2912, Invalid=8218, Unknown=0, NotChecked=0, Total=11130 [2022-03-20 13:04:22,043 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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) [2022-03-20 13:04:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:04:24,087 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-03-20 13:04:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-20 13:04:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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 [2022-03-20 13:04:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:04:24,088 INFO L225 Difference]: With dead ends: 68 [2022-03-20 13:04:24,088 INFO L226 Difference]: Without dead ends: 63 [2022-03-20 13:04:24,089 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=5817, Invalid=18675, Unknown=0, NotChecked=0, Total=24492 [2022-03-20 13:04:24,090 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 13:04:24,091 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 13:04:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-20 13:04:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-03-20 13:04:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-03-20 13:04:24,095 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2022-03-20 13:04:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:04:24,095 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-03-20 13:04:24,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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) [2022-03-20 13:04:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-03-20 13:04:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 13:04:24,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:04:24,096 INFO L499 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:04:24,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-20 13:04:24,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-20 13:04:24,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:24,503 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:04:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:04:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 101 times [2022-03-20 13:04:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:24,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [569414272] [2022-03-20 13:04:24,526 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:04:24,526 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:04:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1087959415, now seen corresponding path program 1 times [2022-03-20 13:04:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388198155] [2022-03-20 13:04:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:24,529 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_51.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:04:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:04:24,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938308573] [2022-03-20 13:04:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:24,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:24,533 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:24,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-20 13:04:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:24,554 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:04:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:24,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:04:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 102 times [2022-03-20 13:04:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:24,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429385364] [2022-03-20 13:04:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:04:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:04:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429385364] [2022-03-20 13:04:25,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429385364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:04:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500660152] [2022-03-20 13:04:25,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:04:25,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:25,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:25,858 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:25,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-20 13:04:35,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-03-20 13:04:35,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:35,199 WARN L261 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-20 13:04:35,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:35,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:40,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500660152] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:40,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:40,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 57] total 111 [2022-03-20 13:04:40,537 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:40,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [569414272] [2022-03-20 13:04:40,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [569414272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:40,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:40,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-03-20 13:04:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497601275] [2022-03-20 13:04:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:40,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-20 13:04:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-20 13:04:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=9131, Unknown=0, NotChecked=0, Total=12210 [2022-03-20 13:04:40,539 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:04:42,738 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-03-20 13:04:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-20 13:04:42,739 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-03-20 13:04:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:04:42,739 INFO L225 Difference]: With dead ends: 69 [2022-03-20 13:04:42,739 INFO L226 Difference]: Without dead ends: 64 [2022-03-20 13:04:42,740 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6093, Invalid=20313, Unknown=0, NotChecked=0, Total=26406 [2022-03-20 13:04:42,741 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 13:04:42,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 263 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 13:04:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-20 13:04:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-03-20 13:04:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 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) [2022-03-20 13:04:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-03-20 13:04:42,746 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2022-03-20 13:04:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:04:42,746 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-03-20 13:04:42,746 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-03-20 13:04:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 13:04:42,746 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:04:42,746 INFO L499 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:04:42,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-03-20 13:04:42,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-20 13:04:43,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102,SelfDestructingSolverStorable103 [2022-03-20 13:04:43,147 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:04:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:04:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 103 times [2022-03-20 13:04:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:43,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1538570602] [2022-03-20 13:04:43,179 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:04:43,180 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:04:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1147064759, now seen corresponding path program 1 times [2022-03-20 13:04:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:43,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517372913] [2022-03-20 13:04:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:43,183 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_52.0))) (+ .cse0 main_~x~0_5 (* (- 4294967296) (div (+ .cse0 main_~x~0_5) 4294967296)) (- 1))) 0)) [2022-03-20 13:04:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:04:43,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948301697] [2022-03-20 13:04:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:43,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:43,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:43,189 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:43,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-20 13:04:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:43,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:04:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:43,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:04:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 104 times [2022-03-20 13:04:43,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:43,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423019446] [2022-03-20 13:04:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:04:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:04:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423019446] [2022-03-20 13:04:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423019446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:04:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140813778] [2022-03-20 13:04:44,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:04:44,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:44,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:44,505 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:44,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-20 13:04:44,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:04:44,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:44,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 110 conjunts are in the unsatisfiable core [2022-03-20 13:04:44,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:44,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:50,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140813778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:50,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:50,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 58] total 113 [2022-03-20 13:04:50,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1538570602] [2022-03-20 13:04:50,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1538570602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:50,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:50,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-03-20 13:04:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221161599] [2022-03-20 13:04:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:50,121 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-20 13:04:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-20 13:04:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9465, Unknown=0, NotChecked=0, Total=12656 [2022-03-20 13:04:50,122 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 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) [2022-03-20 13:04:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:04:52,389 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-03-20 13:04:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-20 13:04:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 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 [2022-03-20 13:04:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:04:52,390 INFO L225 Difference]: With dead ends: 70 [2022-03-20 13:04:52,390 INFO L226 Difference]: Without dead ends: 65 [2022-03-20 13:04:52,391 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=6316, Invalid=21074, Unknown=0, NotChecked=0, Total=27390 [2022-03-20 13:04:52,391 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 13:04:52,391 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 168 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 13:04:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-20 13:04:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-03-20 13:04:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:04:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-03-20 13:04:52,395 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2022-03-20 13:04:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:04:52,395 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-03-20 13:04:52,395 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 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) [2022-03-20 13:04:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-03-20 13:04:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-20 13:04:52,396 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:04:52,396 INFO L499 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:04:52,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-20 13:04:52,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-20 13:04:52,800 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:52,800 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:04:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:04:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 105 times [2022-03-20 13:04:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:52,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [309117458] [2022-03-20 13:04:52,823 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:04:52,823 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:04:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1206170103, now seen corresponding path program 1 times [2022-03-20 13:04:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088531163] [2022-03-20 13:04:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:52,825 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_53.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:04:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:04:52,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266042263] [2022-03-20 13:04:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:52,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:52,829 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:52,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-20 13:04:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:52,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:04:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:04:52,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:04:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 106 times [2022-03-20 13:04:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:04:52,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646181410] [2022-03-20 13:04:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:04:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:04:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:04:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:04:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:54,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:04:54,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646181410] [2022-03-20 13:04:54,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646181410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:04:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976877124] [2022-03-20 13:04:54,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:04:54,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:04:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:04:54,204 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:04:54,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-20 13:04:54,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:04:54,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:04:54,329 WARN L261 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjunts are in the unsatisfiable core [2022-03-20 13:04:54,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:04:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:54,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:04:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:04:58,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976877124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:04:58,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:04:58,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 112 [2022-03-20 13:04:58,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:04:58,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [309117458] [2022-03-20 13:04:58,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [309117458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:04:58,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:04:58,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-03-20 13:04:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720327287] [2022-03-20 13:04:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:04:58,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-20 13:04:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:04:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-20 13:04:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3245, Invalid=9187, Unknown=0, NotChecked=0, Total=12432 [2022-03-20 13:04:58,844 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:05:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:05:01,159 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-03-20 13:05:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-20 13:05:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 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 64 [2022-03-20 13:05:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:05:01,160 INFO L225 Difference]: With dead ends: 71 [2022-03-20 13:05:01,160 INFO L226 Difference]: Without dead ends: 66 [2022-03-20 13:05:01,160 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6483, Invalid=20907, Unknown=0, NotChecked=0, Total=27390 [2022-03-20 13:05:01,161 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:05:01,161 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 13:05:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-20 13:05:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-03-20 13:05:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 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) [2022-03-20 13:05:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2022-03-20 13:05:01,165 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2022-03-20 13:05:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:05:01,165 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2022-03-20 13:05:01,165 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:05:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2022-03-20 13:05:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 13:05:01,166 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:05:01,166 INFO L499 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:05:01,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-03-20 13:05:01,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-03-20 13:05:01,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106,SelfDestructingSolverStorable107 [2022-03-20 13:05:01,571 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:05:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:05:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 107 times [2022-03-20 13:05:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:01,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1705770867] [2022-03-20 13:05:01,591 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:05:01,592 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:05:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1265275447, now seen corresponding path program 1 times [2022-03-20 13:05:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:01,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007537959] [2022-03-20 13:05:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:01,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:01,594 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_54.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:05:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:05:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381143857] [2022-03-20 13:05:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:01,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:01,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:01,598 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:01,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-20 13:05:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:01,633 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:05:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:01,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:05:01,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 108 times [2022-03-20 13:05:01,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:01,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311865467] [2022-03-20 13:05:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:05:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:05:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311865467] [2022-03-20 13:05:03,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311865467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:05:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237708395] [2022-03-20 13:05:03,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:05:03,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:03,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:03,028 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:03,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-20 13:05:18,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-03-20 13:05:18,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:05:18,530 WARN L261 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 114 conjunts are in the unsatisfiable core [2022-03-20 13:05:18,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:05:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:18,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:05:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:24,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237708395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:05:24,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:05:24,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 60] total 117 [2022-03-20 13:05:24,426 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:05:24,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1705770867] [2022-03-20 13:05:24,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1705770867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:05:24,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:05:24,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-03-20 13:05:24,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725000821] [2022-03-20 13:05:24,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:05:24,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-20 13:05:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-20 13:05:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=10151, Unknown=0, NotChecked=0, Total=13572 [2022-03-20 13:05:24,428 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 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) [2022-03-20 13:05:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:05:26,839 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-03-20 13:05:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-20 13:05:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 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 [2022-03-20 13:05:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:05:26,840 INFO L225 Difference]: With dead ends: 72 [2022-03-20 13:05:26,840 INFO L226 Difference]: Without dead ends: 67 [2022-03-20 13:05:26,841 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=6774, Invalid=22638, Unknown=0, NotChecked=0, Total=29412 [2022-03-20 13:05:26,841 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:05:26,841 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 258 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 13:05:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-20 13:05:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-03-20 13:05:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 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) [2022-03-20 13:05:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-03-20 13:05:26,844 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2022-03-20 13:05:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:05:26,844 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-03-20 13:05:26,844 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 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) [2022-03-20 13:05:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-03-20 13:05:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 13:05:26,845 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:05:26,845 INFO L499 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:05:26,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-20 13:05:27,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-20 13:05:27,245 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:27,246 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:05:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:05:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 109 times [2022-03-20 13:05:27,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:27,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1311279657] [2022-03-20 13:05:27,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:05:27,266 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:05:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1324380791, now seen corresponding path program 1 times [2022-03-20 13:05:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:27,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333679159] [2022-03-20 13:05:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:27,268 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_55.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:05:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:05:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679208805] [2022-03-20 13:05:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:27,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:27,272 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:27,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-20 13:05:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:27,311 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:05:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:27,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:05:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 110 times [2022-03-20 13:05:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:27,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476984631] [2022-03-20 13:05:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:05:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:28,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:05:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476984631] [2022-03-20 13:05:28,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476984631] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:05:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73481892] [2022-03-20 13:05:28,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:05:28,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:28,746 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:28,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-20 13:05:28,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:05:28,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:05:28,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 116 conjunts are in the unsatisfiable core [2022-03-20 13:05:28,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:05:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:29,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:05:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:34,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73481892] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:05:34,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:05:34,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 61] total 119 [2022-03-20 13:05:34,967 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:05:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1311279657] [2022-03-20 13:05:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1311279657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:05:34,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:05:34,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-03-20 13:05:34,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254520325] [2022-03-20 13:05:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:05:34,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-20 13:05:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-20 13:05:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10503, Unknown=0, NotChecked=0, Total=14042 [2022-03-20 13:05:34,969 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:05:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:05:37,460 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-03-20 13:05:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-20 13:05:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 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 66 [2022-03-20 13:05:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:05:37,461 INFO L225 Difference]: With dead ends: 73 [2022-03-20 13:05:37,461 INFO L226 Difference]: Without dead ends: 68 [2022-03-20 13:05:37,463 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=7009, Invalid=23441, Unknown=0, NotChecked=0, Total=30450 [2022-03-20 13:05:37,463 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:05:37,463 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 3240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3127 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 13:05:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-20 13:05:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-03-20 13:05:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 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) [2022-03-20 13:05:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2022-03-20 13:05:37,466 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2022-03-20 13:05:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:05:37,466 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2022-03-20 13:05:37,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:05:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2022-03-20 13:05:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 13:05:37,467 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:05:37,467 INFO L499 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:05:37,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-20 13:05:37,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-20 13:05:37,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-20 13:05:37,868 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:05:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:05:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 111 times [2022-03-20 13:05:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:37,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1461219217] [2022-03-20 13:05:37,896 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:05:37,897 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:05:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1383486135, now seen corresponding path program 1 times [2022-03-20 13:05:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:37,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734647524] [2022-03-20 13:05:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:37,900 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_56.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:05:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:05:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493722488] [2022-03-20 13:05:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:37,904 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:37,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-20 13:05:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:37,928 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:05:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:37,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:05:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 112 times [2022-03-20 13:05:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:37,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465287749] [2022-03-20 13:05:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:05:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:05:39,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465287749] [2022-03-20 13:05:39,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465287749] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:05:39,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144146611] [2022-03-20 13:05:39,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:05:39,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:39,396 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:39,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-20 13:05:39,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:05:39,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:05:39,531 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 115 conjunts are in the unsatisfiable core [2022-03-20 13:05:39,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:05:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:39,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:05:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:44,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144146611] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:05:44,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:05:44,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 118 [2022-03-20 13:05:44,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:05:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1461219217] [2022-03-20 13:05:44,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1461219217] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:05:44,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:05:44,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-03-20 13:05:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760714751] [2022-03-20 13:05:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:05:44,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-20 13:05:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-20 13:05:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3596, Invalid=10210, Unknown=0, NotChecked=0, Total=13806 [2022-03-20 13:05:44,464 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 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) [2022-03-20 13:05:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:05:47,049 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-03-20 13:05:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-20 13:05:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 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 [2022-03-20 13:05:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:05:47,050 INFO L225 Difference]: With dead ends: 74 [2022-03-20 13:05:47,050 INFO L226 Difference]: Without dead ends: 69 [2022-03-20 13:05:47,052 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=7185, Invalid=23265, Unknown=0, NotChecked=0, Total=30450 [2022-03-20 13:05:47,052 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:05:47,052 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 248 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 13:05:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-20 13:05:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-03-20 13:05:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 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) [2022-03-20 13:05:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-03-20 13:05:47,056 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2022-03-20 13:05:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:05:47,056 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-03-20 13:05:47,056 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 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) [2022-03-20 13:05:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-03-20 13:05:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 13:05:47,056 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:05:47,056 INFO L499 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:05:47,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-20 13:05:47,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-03-20 13:05:47,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112,SelfDestructingSolverStorable113 [2022-03-20 13:05:47,461 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:05:47,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:05:47,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 113 times [2022-03-20 13:05:47,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:05:47,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [335305531] [2022-03-20 13:05:47,487 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:05:47,487 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:05:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1442591479, now seen corresponding path program 1 times [2022-03-20 13:05:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327955969] [2022-03-20 13:05:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:47,489 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_57.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:05:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:05:47,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435490423] [2022-03-20 13:05:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:47,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:47,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:47,493 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:47,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-20 13:05:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:47,529 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:05:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:05:47,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:05:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 114 times [2022-03-20 13:05:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:05:47,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687166821] [2022-03-20 13:05:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:05:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:05:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:05:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:05:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:05:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:05:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687166821] [2022-03-20 13:05:49,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687166821] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:05:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495030391] [2022-03-20 13:05:49,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:05:49,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:05:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:05:49,027 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:05:49,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-20 13:06:04,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2022-03-20 13:06:04,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:06:04,363 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 120 conjunts are in the unsatisfiable core [2022-03-20 13:06:04,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:06:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:04,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:06:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:10,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495030391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:06:10,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:06:10,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 63] total 123 [2022-03-20 13:06:10,950 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:06:10,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [335305531] [2022-03-20 13:06:10,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [335305531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:06:10,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:06:10,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-03-20 13:06:10,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259360246] [2022-03-20 13:06:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:06:10,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-20 13:06:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:10,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-20 13:06:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=11225, Unknown=0, NotChecked=0, Total=15006 [2022-03-20 13:06:10,952 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:06:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:06:13,663 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-03-20 13:06:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-20 13:06:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 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 68 [2022-03-20 13:06:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:06:13,664 INFO L225 Difference]: With dead ends: 75 [2022-03-20 13:06:13,664 INFO L226 Difference]: Without dead ends: 70 [2022-03-20 13:06:13,666 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=7491, Invalid=25089, Unknown=0, NotChecked=0, Total=32580 [2022-03-20 13:06:13,667 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:06:13,667 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 3555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 13:06:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-03-20 13:06:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-03-20 13:06:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 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) [2022-03-20 13:06:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2022-03-20 13:06:13,672 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2022-03-20 13:06:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:06:13,672 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2022-03-20 13:06:13,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:06:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2022-03-20 13:06:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 13:06:13,672 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:06:13,672 INFO L499 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:06:13,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-20 13:06:13,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-20 13:06:14,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:14,081 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:06:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:06:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 115 times [2022-03-20 13:06:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:14,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1626319488] [2022-03-20 13:06:14,112 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:06:14,113 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:06:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1501696823, now seen corresponding path program 1 times [2022-03-20 13:06:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:14,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019264745] [2022-03-20 13:06:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:14,116 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_58.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:06:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:06:14,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377388069] [2022-03-20 13:06:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:14,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:14,120 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:14,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-20 13:06:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:14,149 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:06:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:14,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:06:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 116 times [2022-03-20 13:06:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:14,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056409840] [2022-03-20 13:06:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:06:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:06:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056409840] [2022-03-20 13:06:15,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056409840] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:06:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021271620] [2022-03-20 13:06:15,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 13:06:15,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:15,758 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:15,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-20 13:06:15,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 13:06:15,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:06:15,801 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 122 conjunts are in the unsatisfiable core [2022-03-20 13:06:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:06:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:16,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:06:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:22,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021271620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:06:22,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:06:22,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 64] total 125 [2022-03-20 13:06:22,622 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:06:22,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1626319488] [2022-03-20 13:06:22,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1626319488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:06:22,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:06:22,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-03-20 13:06:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442930426] [2022-03-20 13:06:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:06:22,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-20 13:06:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-20 13:06:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11595, Unknown=0, NotChecked=0, Total=15500 [2022-03-20 13:06:22,624 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 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) [2022-03-20 13:06:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:06:25,362 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-03-20 13:06:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-20 13:06:25,363 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 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 [2022-03-20 13:06:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:06:25,363 INFO L225 Difference]: With dead ends: 76 [2022-03-20 13:06:25,363 INFO L226 Difference]: Without dead ends: 71 [2022-03-20 13:06:25,365 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=7738, Invalid=25934, Unknown=0, NotChecked=0, Total=33672 [2022-03-20 13:06:25,365 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:06:25,365 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 13:06:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-20 13:06:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-20 13:06:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:06:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-03-20 13:06:25,368 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2022-03-20 13:06:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:06:25,369 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-03-20 13:06:25,369 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 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) [2022-03-20 13:06:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-03-20 13:06:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 13:06:25,369 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:06:25,369 INFO L499 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:06:25,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-20 13:06:25,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-03-20 13:06:25,770 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116,SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:25,770 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:06:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:06:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 117 times [2022-03-20 13:06:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [923588586] [2022-03-20 13:06:25,792 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:06:25,792 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:06:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1560802167, now seen corresponding path program 1 times [2022-03-20 13:06:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:25,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551073704] [2022-03-20 13:06:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:25,794 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_59.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:06:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:06:25,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329117292] [2022-03-20 13:06:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:25,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:25,798 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:25,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-20 13:06:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:25,822 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:06:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:25,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:06:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 118 times [2022-03-20 13:06:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179027108] [2022-03-20 13:06:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:06:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:06:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179027108] [2022-03-20 13:06:27,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179027108] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:06:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001622992] [2022-03-20 13:06:27,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 13:06:27,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:27,525 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:27,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-20 13:06:27,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 13:06:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 13:06:27,673 WARN L261 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 121 conjunts are in the unsatisfiable core [2022-03-20 13:06:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 13:06:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:27,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 13:06:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:33,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001622992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 13:06:33,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 13:06:33,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 124 [2022-03-20 13:06:33,221 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:06:33,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [923588586] [2022-03-20 13:06:33,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [923588586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:06:33,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:06:33,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-03-20 13:06:33,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889242709] [2022-03-20 13:06:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:06:33,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-20 13:06:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-20 13:06:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3965, Invalid=11287, Unknown=0, NotChecked=0, Total=15252 [2022-03-20 13:06:33,223 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:06:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:06:36,036 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-03-20 13:06:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-20 13:06:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 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 70 [2022-03-20 13:06:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:06:36,037 INFO L225 Difference]: With dead ends: 77 [2022-03-20 13:06:36,037 INFO L226 Difference]: Without dead ends: 72 [2022-03-20 13:06:36,038 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1893 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=7923, Invalid=25749, Unknown=0, NotChecked=0, Total=33672 [2022-03-20 13:06:36,039 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:06:36,039 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 3858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3737 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 13:06:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-20 13:06:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-03-20 13:06:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 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) [2022-03-20 13:06:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-03-20 13:06:36,043 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2022-03-20 13:06:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:06:36,043 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-03-20 13:06:36,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:06:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-03-20 13:06:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 13:06:36,044 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:06:36,044 INFO L499 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:06:36,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-20 13:06:36,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-20 13:06:36,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119,SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:36,467 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:06:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:06:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 119 times [2022-03-20 13:06:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:06:36,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1915628524] [2022-03-20 13:06:36,488 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:06:36,488 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:06:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1619907511, now seen corresponding path program 1 times [2022-03-20 13:06:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:36,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769130002] [2022-03-20 13:06:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:36,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:36,491 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_60.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 13:06:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 13:06:36,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131414587] [2022-03-20 13:06:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:36,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:36,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:36,496 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:36,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-20 13:06:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:36,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:06:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:06:36,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:06:36,546 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 120 times [2022-03-20 13:06:36,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:06:36,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607033810] [2022-03-20 13:06:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:06:36,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:06:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:06:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:06:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:06:38,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:06:38,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607033810] [2022-03-20 13:06:38,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607033810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 13:06:38,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773935523] [2022-03-20 13:06:38,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 13:06:38,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 13:06:38,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:06:38,186 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 13:06:38,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process