/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_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 14:33:40,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 14:33:40,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 14:33:40,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 14:33:41,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 14:33:41,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 14:33:41,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 14:33:41,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 14:33:41,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 14:33:41,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 14:33:41,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 14:33:41,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 14:33:41,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 14:33:41,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 14:33:41,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 14:33:41,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 14:33:41,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 14:33:41,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 14:33:41,042 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 14:33:41,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:33:41,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 14:33:41,043 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 14:33:41,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 14:33:41,044 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 14:33:41,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 14:33:41,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 14:33:41,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 14:33:41,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 14:33:41,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 14:33:41,224 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 14:33:41,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-1.c [2022-04-06 14:33:41,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4143b0f8b/349c18ba8ab2477b93301f661d4e16c4/FLAG9b32272e8 [2022-04-06 14:33:41,589 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 14:33:41,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-1.c [2022-04-06 14:33:41,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4143b0f8b/349c18ba8ab2477b93301f661d4e16c4/FLAG9b32272e8 [2022-04-06 14:33:42,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4143b0f8b/349c18ba8ab2477b93301f661d4e16c4 [2022-04-06 14:33:42,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 14:33:42,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 14:33:42,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 14:33:42,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 14:33:42,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 14:33:42,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f52646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42, skipping insertion in model container [2022-04-06 14:33:42,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 14:33:42,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 14:33:42,197 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_1-1.c[322,335] [2022-04-06 14:33:42,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:33:42,213 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 14:33:42,221 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_1-1.c[322,335] [2022-04-06 14:33:42,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:33:42,235 INFO L208 MainTranslator]: Completed translation [2022-04-06 14:33:42,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42 WrapperNode [2022-04-06 14:33:42,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 14:33:42,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 14:33:42,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 14:33:42,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 14:33:42,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 14:33:42,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 14:33:42,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 14:33:42,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 14:33:42,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (1/1) ... [2022-04-06 14:33:42,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:33:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:42,288 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) [2022-04-06 14:33:42,294 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 [2022-04-06 14:33:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 14:33:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 14:33:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 14:33:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 14:33:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 14:33:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 14:33:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 14:33:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 14:33:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 14:33:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 14:33:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 14:33:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 14:33:42,361 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 14:33:42,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 14:33:42,458 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 14:33:42,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 14:33:42,463 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 14:33:42,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:33:42 BoogieIcfgContainer [2022-04-06 14:33:42,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 14:33:42,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 14:33:42,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 14:33:42,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 14:33:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 02:33:42" (1/3) ... [2022-04-06 14:33:42,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b2b637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:33:42, skipping insertion in model container [2022-04-06 14:33:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:33:42" (2/3) ... [2022-04-06 14:33:42,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b2b637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:33:42, skipping insertion in model container [2022-04-06 14:33:42,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:33:42" (3/3) ... [2022-04-06 14:33:42,472 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_1-1.c [2022-04-06 14:33:42,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 14:33:42,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 14:33:42,512 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 14:33:42,520 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 [2022-04-06 14:33:42,520 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 14:33:42,531 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) [2022-04-06 14:33:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 14:33:42,537 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:42,537 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:42,539 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2022-04-06 14:33:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:42,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [670353919] [2022-04-06 14:33:42,558 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 14:33:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 2 times [2022-04-06 14:33:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:42,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538011939] [2022-04-06 14:33:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:42,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:42,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538011939] [2022-04-06 14:33:42,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538011939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:42,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:42,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 14:33:42,699 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [670353919] [2022-04-06 14:33:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [670353919] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:42,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:42,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 14:33:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279770715] [2022-04-06 14:33:42,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:42,703 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 14:33:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 14:33:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 14:33:42,722 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) [2022-04-06 14:33:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:42,768 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-04-06 14:33:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 14:33:42,769 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 [2022-04-06 14:33:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:42,773 INFO L225 Difference]: With dead ends: 29 [2022-04-06 14:33:42,773 INFO L226 Difference]: Without dead ends: 12 [2022-04-06 14:33:42,776 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 [2022-04-06 14:33:42,778 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 [2022-04-06 14:33:42,779 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] [2022-04-06 14:33:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-04-06 14:33:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-04-06 14:33:42,805 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) [2022-04-06 14:33:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-06 14:33:42,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-04-06 14:33:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:42,807 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-06 14:33:42,808 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) [2022-04-06 14:33:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-06 14:33:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 14:33:42,808 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:42,809 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:42,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 14:33:42,809 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2022-04-06 14:33:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:42,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1323391078] [2022-04-06 14:33:42,811 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 14:33:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 2 times [2022-04-06 14:33:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244007801] [2022-04-06 14:33:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:42,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244007801] [2022-04-06 14:33:42,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244007801] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:42,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 14:33:42,929 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:42,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1323391078] [2022-04-06 14:33:42,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1323391078] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:42,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:42,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 14:33:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334017004] [2022-04-06 14:33:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:42,930 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 14:33:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 14:33:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 14:33:42,931 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) [2022-04-06 14:33:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:42,960 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-06 14:33:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 14:33:42,960 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 [2022-04-06 14:33:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:42,961 INFO L225 Difference]: With dead ends: 18 [2022-04-06 14:33:42,961 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 14:33:42,961 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 [2022-04-06 14:33:42,962 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 [2022-04-06 14:33:42,963 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] [2022-04-06 14:33:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 14:33:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 14:33:42,965 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) [2022-04-06 14:33:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 14:33:42,966 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-06 14:33:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:42,966 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 14:33:42,966 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) [2022-04-06 14:33:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 14:33:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 14:33:42,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:42,967 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:42,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 14:33:42,967 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2022-04-06 14:33:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1310945451] [2022-04-06 14:33:43,062 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:43,063 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1867307785, now seen corresponding path program 1 times [2022-04-06 14:33:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:43,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571090874] [2022-04-06 14:33:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:43,073 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_1.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:33:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:43,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562978675] [2022-04-06 14:33:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:43,098 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) [2022-04-06 14:33:43,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 14:33:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:43,146 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:43,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 2 times [2022-04-06 14:33:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047610860] [2022-04-06 14:33:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:43,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047610860] [2022-04-06 14:33:43,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047610860] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335716771] [2022-04-06 14:33:43,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:33:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:43,242 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) [2022-04-06 14:33:43,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 14:33:43,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:33:43,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 14:33:43,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:43,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:43,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335716771] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:43,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:43,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-06 14:33:43,414 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:43,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1310945451] [2022-04-06 14:33:43,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1310945451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:43,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:43,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 14:33:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891224669] [2022-04-06 14:33:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:43,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 14:33:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 14:33:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 14:33:43,416 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) [2022-04-06 14:33:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:43,446 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-04-06 14:33:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 14:33:43,446 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 [2022-04-06 14:33:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:43,446 INFO L225 Difference]: With dead ends: 19 [2022-04-06 14:33:43,446 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 14:33:43,447 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-06 14:33:43,448 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 [2022-04-06 14:33:43,448 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] [2022-04-06 14:33:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 14:33:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 14:33:43,451 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) [2022-04-06 14:33:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-06 14:33:43,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-06 14:33:43,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:43,451 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-06 14:33:43,451 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) [2022-04-06 14:33:43,451 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-06 14:33:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-06 14:33:43,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:43,452 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:43,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:43,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:43,865 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 [2022-04-06 14:33:43,866 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:43,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:43,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 3 times [2022-04-06 14:33:43,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:43,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2067793643] [2022-04-06 14:33:43,940 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:43,941 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1808202441, now seen corresponding path program 1 times [2022-04-06 14:33:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785553140] [2022-04-06 14:33:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:43,947 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_2.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_2.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:43,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823519675] [2022-04-06 14:33:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:43,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:43,968 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) [2022-04-06 14:33:43,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 14:33:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:44,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:44,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 4 times [2022-04-06 14:33:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:44,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981143910] [2022-04-06 14:33:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:44,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981143910] [2022-04-06 14:33:44,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981143910] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638987128] [2022-04-06 14:33:44,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:33:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:44,108 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) [2022-04-06 14:33:44,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 14:33:44,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:33:44,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 14:33:44,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:44,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:44,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638987128] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:44,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:44,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-04-06 14:33:44,265 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:44,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2067793643] [2022-04-06 14:33:44,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2067793643] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:44,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:44,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 14:33:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792619298] [2022-04-06 14:33:44,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:44,268 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 14:33:44,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 14:33:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-06 14:33:44,269 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) [2022-04-06 14:33:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:44,309 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-06 14:33:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 14:33:44,309 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 [2022-04-06 14:33:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:44,310 INFO L225 Difference]: With dead ends: 20 [2022-04-06 14:33:44,310 INFO L226 Difference]: Without dead ends: 15 [2022-04-06 14:33:44,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-06 14:33:44,315 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:44,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-06 14:33:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-06 14:33:44,324 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) [2022-04-06 14:33:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-06 14:33:44,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-04-06 14:33:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:44,326 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-06 14:33:44,326 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) [2022-04-06 14:33:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-06 14:33:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 14:33:44,327 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:44,327 INFO L499 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:44,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:44,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-06 14:33:44,739 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 [2022-04-06 14:33:44,740 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 5 times [2022-04-06 14:33:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:44,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [965997868] [2022-04-06 14:33:44,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:44,789 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1749097097, now seen corresponding path program 1 times [2022-04-06 14:33:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:44,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178867755] [2022-04-06 14:33:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:44,796 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_3.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_3.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:33:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:44,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624380262] [2022-04-06 14:33:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:44,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:44,807 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) [2022-04-06 14:33:44,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 14:33:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:44,849 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:44,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 6 times [2022-04-06 14:33:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:44,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118144521] [2022-04-06 14:33:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:44,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:44,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118144521] [2022-04-06 14:33:44,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118144521] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:44,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054699205] [2022-04-06 14:33:44,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:33:44,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:44,951 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) [2022-04-06 14:33:44,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 14:33:44,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-04-06 14:33:44,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:44,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 14:33:44,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:45,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:45,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054699205] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:45,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:45,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 15 [2022-04-06 14:33:45,140 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [965997868] [2022-04-06 14:33:45,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [965997868] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:45,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:45,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 14:33:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371483107] [2022-04-06 14:33:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:45,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 14:33:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 14:33:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-04-06 14:33:45,141 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) [2022-04-06 14:33:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:45,205 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-04-06 14:33:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 14:33:45,211 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 [2022-04-06 14:33:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:45,211 INFO L225 Difference]: With dead ends: 21 [2022-04-06 14:33:45,211 INFO L226 Difference]: Without dead ends: 16 [2022-04-06 14:33:45,212 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-04-06 14:33:45,212 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:45,212 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-06 14:33:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-06 14:33:45,214 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) [2022-04-06 14:33:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-06 14:33:45,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-04-06 14:33:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:45,215 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-06 14:33:45,215 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) [2022-04-06 14:33:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-06 14:33:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-06 14:33:45,216 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:45,216 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:45,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:45,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:45,623 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 [2022-04-06 14:33:45,624 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 7 times [2022-04-06 14:33:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [820690010] [2022-04-06 14:33:45,664 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:45,665 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1689991753, now seen corresponding path program 1 times [2022-04-06 14:33:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:45,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063013242] [2022-04-06 14:33:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:45,670 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_4.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_4.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:33:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:45,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468520662] [2022-04-06 14:33:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:45,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:45,693 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) [2022-04-06 14:33:45,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 14:33:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:45,743 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:45,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 8 times [2022-04-06 14:33:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:45,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068655818] [2022-04-06 14:33:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:45,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:45,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068655818] [2022-04-06 14:33:45,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068655818] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:45,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323174134] [2022-04-06 14:33:45,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:33:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:45,831 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) [2022-04-06 14:33:45,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 14:33:45,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:33:45,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:45,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 14:33:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:45,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:45,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323174134] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:45,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:45,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-04-06 14:33:45,999 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [820690010] [2022-04-06 14:33:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [820690010] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:45,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 14:33:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541365655] [2022-04-06 14:33:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:45,999 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 14:33:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 14:33:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-04-06 14:33:46,000 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) [2022-04-06 14:33:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:46,066 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-04-06 14:33:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 14:33:46,067 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 [2022-04-06 14:33:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:46,067 INFO L225 Difference]: With dead ends: 22 [2022-04-06 14:33:46,067 INFO L226 Difference]: Without dead ends: 17 [2022-04-06 14:33:46,068 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-04-06 14:33:46,068 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:46,068 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-06 14:33:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-06 14:33:46,071 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) [2022-04-06 14:33:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-06 14:33:46,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2022-04-06 14:33:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:46,071 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-06 14:33:46,071 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) [2022-04-06 14:33:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-06 14:33:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-06 14:33:46,072 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:46,072 INFO L499 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:46,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:46,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:46,485 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 [2022-04-06 14:33:46,486 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 9 times [2022-04-06 14:33:46,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:46,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [543481469] [2022-04-06 14:33:46,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:46,729 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1630886409, now seen corresponding path program 1 times [2022-04-06 14:33:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:46,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899901263] [2022-04-06 14:33:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:46,733 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_5.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_5.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891905793] [2022-04-06 14:33:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:46,751 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) [2022-04-06 14:33:46,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 14:33:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:46,836 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:46,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 10 times [2022-04-06 14:33:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:46,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174462431] [2022-04-06 14:33:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:46,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174462431] [2022-04-06 14:33:46,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174462431] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453357952] [2022-04-06 14:33:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:33:46,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:46,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:46,934 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) [2022-04-06 14:33:46,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 14:33:46,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:33:46,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:46,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 14:33:46,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:47,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:47,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453357952] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:47,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:47,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-04-06 14:33:47,094 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [543481469] [2022-04-06 14:33:47,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [543481469] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:47,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:47,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 14:33:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566574329] [2022-04-06 14:33:47,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:47,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 14:33:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:47,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 14:33:47,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-04-06 14:33:47,095 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) [2022-04-06 14:33:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:47,175 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-04-06 14:33:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 14:33:47,175 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 [2022-04-06 14:33:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:47,176 INFO L225 Difference]: With dead ends: 23 [2022-04-06 14:33:47,176 INFO L226 Difference]: Without dead ends: 18 [2022-04-06 14:33:47,176 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-04-06 14:33:47,177 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:47,177 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-06 14:33:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-06 14:33:47,179 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) [2022-04-06 14:33:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-04-06 14:33:47,179 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2022-04-06 14:33:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:47,180 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-04-06 14:33:47,180 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) [2022-04-06 14:33:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-06 14:33:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 14:33:47,180 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:47,180 INFO L499 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:47,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:47,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:47,583 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 [2022-04-06 14:33:47,584 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 11 times [2022-04-06 14:33:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:47,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1564279743] [2022-04-06 14:33:47,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:47,631 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1571781065, now seen corresponding path program 1 times [2022-04-06 14:33:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:47,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495583155] [2022-04-06 14:33:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:47,641 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_6.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_6.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:47,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387254697] [2022-04-06 14:33:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:47,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:47,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:47,657 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) [2022-04-06 14:33:47,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 14:33:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:47,696 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:47,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 12 times [2022-04-06 14:33:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837340629] [2022-04-06 14:33:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837340629] [2022-04-06 14:33:47,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837340629] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470396814] [2022-04-06 14:33:47,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:33:47,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:47,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:47,799 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) [2022-04-06 14:33:47,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 14:33:47,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-06 14:33:47,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:47,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-06 14:33:47,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:47,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:48,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470396814] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:48,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:48,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 21 [2022-04-06 14:33:48,074 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1564279743] [2022-04-06 14:33:48,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1564279743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:48,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:48,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 14:33:48,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691617253] [2022-04-06 14:33:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:48,075 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 14:33:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 14:33:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-04-06 14:33:48,076 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) [2022-04-06 14:33:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:48,168 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-04-06 14:33:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 14:33:48,168 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 [2022-04-06 14:33:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:48,168 INFO L225 Difference]: With dead ends: 24 [2022-04-06 14:33:48,168 INFO L226 Difference]: Without dead ends: 19 [2022-04-06 14:33:48,169 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-04-06 14:33:48,169 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 [2022-04-06 14:33:48,169 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] [2022-04-06 14:33:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-06 14:33:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-06 14:33:48,171 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) [2022-04-06 14:33:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-04-06 14:33:48,172 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2022-04-06 14:33:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:48,172 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-04-06 14:33:48,172 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) [2022-04-06 14:33:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-04-06 14:33:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 14:33:48,172 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:48,173 INFO L499 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:48,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:48,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-04-06 14:33:48,577 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 [2022-04-06 14:33:48,577 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 13 times [2022-04-06 14:33:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [258688934] [2022-04-06 14:33:48,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:48,772 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1512675721, now seen corresponding path program 1 times [2022-04-06 14:33:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066546374] [2022-04-06 14:33:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:48,776 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_7.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_7.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619607083] [2022-04-06 14:33:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:48,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:48,796 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) [2022-04-06 14:33:48,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 14:33:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:48,843 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:48,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 14 times [2022-04-06 14:33:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:48,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321458353] [2022-04-06 14:33:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321458353] [2022-04-06 14:33:48,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321458353] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689426725] [2022-04-06 14:33:48,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:33:48,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:48,951 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) [2022-04-06 14:33:48,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 14:33:48,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:33:48,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:48,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 14:33:48,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:49,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:49,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689426725] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:49,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:49,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2022-04-06 14:33:49,171 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:49,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [258688934] [2022-04-06 14:33:49,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [258688934] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:49,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:49,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 14:33:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125115263] [2022-04-06 14:33:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:49,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 14:33:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 14:33:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-04-06 14:33:49,172 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) [2022-04-06 14:33:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:49,270 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-04-06 14:33:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 14:33:49,270 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 [2022-04-06 14:33:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:49,271 INFO L225 Difference]: With dead ends: 25 [2022-04-06 14:33:49,271 INFO L226 Difference]: Without dead ends: 20 [2022-04-06 14:33:49,271 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-04-06 14:33:49,271 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:49,272 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-04-06 14:33:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-04-06 14:33:49,274 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) [2022-04-06 14:33:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-04-06 14:33:49,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2022-04-06 14:33:49,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:49,274 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-04-06 14:33:49,274 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) [2022-04-06 14:33:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-04-06 14:33:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-06 14:33:49,275 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:49,275 INFO L499 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:49,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:49,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-04-06 14:33:49,679 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 [2022-04-06 14:33:49,679 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 15 times [2022-04-06 14:33:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:49,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1797176695] [2022-04-06 14:33:49,723 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:49,724 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1453570377, now seen corresponding path program 1 times [2022-04-06 14:33:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:49,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483398662] [2022-04-06 14:33:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:49,727 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_8.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_8.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324723962] [2022-04-06 14:33:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:49,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:49,741 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) [2022-04-06 14:33:49,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 14:33:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:49,791 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:49,805 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 16 times [2022-04-06 14:33:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323190470] [2022-04-06 14:33:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:49,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:49,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323190470] [2022-04-06 14:33:49,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323190470] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:49,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022891150] [2022-04-06 14:33:49,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:33:49,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:49,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:49,911 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) [2022-04-06 14:33:49,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 14:33:49,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:33:49,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:49,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 14:33:49,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:49,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:50,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022891150] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:50,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:50,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-04-06 14:33:50,162 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1797176695] [2022-04-06 14:33:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1797176695] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:50,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:50,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 14:33:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792221097] [2022-04-06 14:33:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:50,162 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 14:33:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 14:33:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-04-06 14:33:50,163 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) [2022-04-06 14:33:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:50,306 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-04-06 14:33:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 14:33:50,306 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 [2022-04-06 14:33:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:50,306 INFO L225 Difference]: With dead ends: 26 [2022-04-06 14:33:50,306 INFO L226 Difference]: Without dead ends: 21 [2022-04-06 14:33:50,307 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2022-04-06 14:33:50,307 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:50,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:33:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-04-06 14:33:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-04-06 14:33:50,310 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) [2022-04-06 14:33:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-04-06 14:33:50,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2022-04-06 14:33:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:50,310 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-04-06 14:33:50,310 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) [2022-04-06 14:33:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-04-06 14:33:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 14:33:50,311 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:50,311 INFO L499 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:50,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:50,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:50,727 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 [2022-04-06 14:33:50,728 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 17 times [2022-04-06 14:33:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:50,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1854218325] [2022-04-06 14:33:50,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:50,764 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1394465033, now seen corresponding path program 1 times [2022-04-06 14:33:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888998382] [2022-04-06 14:33:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:50,768 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_9.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_9.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:50,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044781792] [2022-04-06 14:33:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:50,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:50,774 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) [2022-04-06 14:33:50,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 14:33:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:50,821 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:50,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:50,830 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 18 times [2022-04-06 14:33:50,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:50,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505874683] [2022-04-06 14:33:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:50,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505874683] [2022-04-06 14:33:50,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505874683] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289513695] [2022-04-06 14:33:50,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:33:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:50,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:50,960 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) [2022-04-06 14:33:50,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 14:33:51,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-04-06 14:33:51,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:51,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 14:33:51,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:51,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:51,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289513695] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:51,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:51,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 24 [2022-04-06 14:33:51,313 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:51,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1854218325] [2022-04-06 14:33:51,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1854218325] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:51,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:51,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 14:33:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165552858] [2022-04-06 14:33:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:51,313 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 14:33:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 14:33:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2022-04-06 14:33:51,314 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) [2022-04-06 14:33:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:51,447 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-04-06 14:33:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 14:33:51,448 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 [2022-04-06 14:33:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:51,448 INFO L225 Difference]: With dead ends: 27 [2022-04-06 14:33:51,448 INFO L226 Difference]: Without dead ends: 22 [2022-04-06 14:33:51,449 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=799, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 14:33:51,449 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:51,449 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-06 14:33:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-04-06 14:33:51,451 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) [2022-04-06 14:33:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-04-06 14:33:51,452 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2022-04-06 14:33:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:51,452 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-04-06 14:33:51,452 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) [2022-04-06 14:33:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-04-06 14:33:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-06 14:33:51,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:51,452 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:51,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-04-06 14:33:51,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-04-06 14:33:51,853 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 [2022-04-06 14:33:51,853 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 19 times [2022-04-06 14:33:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:51,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1564531497] [2022-04-06 14:33:51,880 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:51,880 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1335359689, now seen corresponding path program 1 times [2022-04-06 14:33:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:51,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103441556] [2022-04-06 14:33:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:51,883 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_10.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_10.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:51,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092075524] [2022-04-06 14:33:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:51,890 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) [2022-04-06 14:33:51,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 14:33:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:51,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:51,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 20 times [2022-04-06 14:33:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:51,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734098829] [2022-04-06 14:33:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:52,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:52,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734098829] [2022-04-06 14:33:52,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734098829] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:52,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736935727] [2022-04-06 14:33:52,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:33:52,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:52,059 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) [2022-04-06 14:33:52,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 14:33:52,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:33:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:52,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 14:33:52,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:52,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:52,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736935727] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:52,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:52,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-04-06 14:33:52,374 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:52,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1564531497] [2022-04-06 14:33:52,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1564531497] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:52,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:52,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 14:33:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169307387] [2022-04-06 14:33:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:52,375 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 14:33:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 14:33:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-04-06 14:33:52,376 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) [2022-04-06 14:33:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:52,536 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-04-06 14:33:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 14:33:52,537 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 [2022-04-06 14:33:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:52,537 INFO L225 Difference]: With dead ends: 28 [2022-04-06 14:33:52,537 INFO L226 Difference]: Without dead ends: 23 [2022-04-06 14:33:52,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=377, Invalid=955, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 14:33:52,538 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:52,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:33:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-06 14:33:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-06 14:33:52,540 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) [2022-04-06 14:33:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-04-06 14:33:52,540 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2022-04-06 14:33:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:52,540 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-04-06 14:33:52,540 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) [2022-04-06 14:33:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-04-06 14:33:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 14:33:52,541 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:52,541 INFO L499 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:52,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:52,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:52,945 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 [2022-04-06 14:33:52,946 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 21 times [2022-04-06 14:33:52,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:52,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2025337332] [2022-04-06 14:33:52,985 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:52,985 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:52,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1276254345, now seen corresponding path program 1 times [2022-04-06 14:33:52,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:52,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947544922] [2022-04-06 14:33:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:52,989 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_11.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_11.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:52,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733061278] [2022-04-06 14:33:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:52,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:52,994 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) [2022-04-06 14:33:52,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 14:33:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:53,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:53,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 22 times [2022-04-06 14:33:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:53,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027578347] [2022-04-06 14:33:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:53,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027578347] [2022-04-06 14:33:53,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027578347] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704125155] [2022-04-06 14:33:53,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:33:53,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:53,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:53,177 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) [2022-04-06 14:33:53,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-06 14:33:53,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:33:53,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:53,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-06 14:33:53,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:53,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:53,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704125155] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:53,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:53,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 28 [2022-04-06 14:33:53,531 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2025337332] [2022-04-06 14:33:53,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2025337332] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:53,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:53,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 14:33:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074773651] [2022-04-06 14:33:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:53,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 14:33:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 14:33:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-04-06 14:33:53,532 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) [2022-04-06 14:33:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:53,721 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-04-06 14:33:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 14:33:53,722 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 [2022-04-06 14:33:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:53,722 INFO L225 Difference]: With dead ends: 29 [2022-04-06 14:33:53,722 INFO L226 Difference]: Without dead ends: 24 [2022-04-06 14:33:53,723 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 14:33:53,723 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:53,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:33:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-06 14:33:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-06 14:33:53,725 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) [2022-04-06 14:33:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-04-06 14:33:53,726 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-04-06 14:33:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:53,726 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-04-06 14:33:53,726 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) [2022-04-06 14:33:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-06 14:33:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 14:33:53,726 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:53,726 INFO L499 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:53,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:53,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:54,127 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 [2022-04-06 14:33:54,127 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 23 times [2022-04-06 14:33:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:54,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1542596910] [2022-04-06 14:33:54,153 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:54,153 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1217149001, now seen corresponding path program 1 times [2022-04-06 14:33:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:54,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095931722] [2022-04-06 14:33:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:54,157 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_12.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_12.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35971914] [2022-04-06 14:33:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:54,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:54,161 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) [2022-04-06 14:33:54,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-06 14:33:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:54,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:54,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 24 times [2022-04-06 14:33:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460211245] [2022-04-06 14:33:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:54,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460211245] [2022-04-06 14:33:54,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460211245] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616314091] [2022-04-06 14:33:54,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:33:54,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:54,356 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) [2022-04-06 14:33:54,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-06 14:33:54,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 14:33:54,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:54,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-06 14:33:54,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:54,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:54,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616314091] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:54,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:54,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 18] total 33 [2022-04-06 14:33:54,982 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:54,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1542596910] [2022-04-06 14:33:54,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1542596910] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:54,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:54,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 14:33:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895217584] [2022-04-06 14:33:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:54,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 14:33:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 14:33:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2022-04-06 14:33:54,983 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) [2022-04-06 14:33:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:55,200 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-04-06 14:33:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 14:33:55,200 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 [2022-04-06 14:33:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:55,201 INFO L225 Difference]: With dead ends: 30 [2022-04-06 14:33:55,201 INFO L226 Difference]: Without dead ends: 25 [2022-04-06 14:33:55,201 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2022-04-06 14:33:55,202 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 [2022-04-06 14:33:55,202 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] [2022-04-06 14:33:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-06 14:33:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-06 14:33:55,204 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) [2022-04-06 14:33:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-04-06 14:33:55,205 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2022-04-06 14:33:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:55,205 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-04-06 14:33:55,205 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) [2022-04-06 14:33:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-04-06 14:33:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 14:33:55,205 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:55,205 INFO L499 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:55,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:55,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:55,607 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 [2022-04-06 14:33:55,607 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 25 times [2022-04-06 14:33:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1193521017] [2022-04-06 14:33:55,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:55,639 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1158043657, now seen corresponding path program 1 times [2022-04-06 14:33:55,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:55,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904507929] [2022-04-06 14:33:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:55,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:55,642 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_13.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_13.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:55,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844369624] [2022-04-06 14:33:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:55,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:55,647 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) [2022-04-06 14:33:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-06 14:33:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:55,691 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:55,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 26 times [2022-04-06 14:33:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:55,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191537547] [2022-04-06 14:33:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191537547] [2022-04-06 14:33:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191537547] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750732549] [2022-04-06 14:33:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:33:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:55,857 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) [2022-04-06 14:33:55,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-06 14:33:55,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:33:55,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:55,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-06 14:33:55,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:55,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:56,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750732549] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:56,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:56,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 32 [2022-04-06 14:33:56,287 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:56,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1193521017] [2022-04-06 14:33:56,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1193521017] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:56,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:56,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 14:33:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823414819] [2022-04-06 14:33:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:56,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 14:33:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 14:33:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2022-04-06 14:33:56,288 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) [2022-04-06 14:33:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:56,495 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-04-06 14:33:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 14:33:56,496 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 [2022-04-06 14:33:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:56,496 INFO L225 Difference]: With dead ends: 31 [2022-04-06 14:33:56,496 INFO L226 Difference]: Without dead ends: 26 [2022-04-06 14:33:56,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=1507, Unknown=0, NotChecked=0, Total=2070 [2022-04-06 14:33:56,497 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:56,498 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:33:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-06 14:33:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-06 14:33:56,500 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) [2022-04-06 14:33:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-04-06 14:33:56,500 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2022-04-06 14:33:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:56,500 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-04-06 14:33:56,500 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) [2022-04-06 14:33:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-04-06 14:33:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 14:33:56,501 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:56,501 INFO L499 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:56,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-04-06 14:33:56,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-04-06 14:33:56,903 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 [2022-04-06 14:33:56,903 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 27 times [2022-04-06 14:33:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:56,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1480893910] [2022-04-06 14:33:56,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:56,932 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1098938313, now seen corresponding path program 1 times [2022-04-06 14:33:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:56,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087514298] [2022-04-06 14:33:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:56,935 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_14.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_14.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:56,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963146325] [2022-04-06 14:33:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:56,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:56,952 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) [2022-04-06 14:33:56,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-06 14:33:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:56,990 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:57,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 28 times [2022-04-06 14:33:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:57,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628724287] [2022-04-06 14:33:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:57,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:57,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628724287] [2022-04-06 14:33:57,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628724287] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:57,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665554042] [2022-04-06 14:33:57,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:33:57,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:57,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:57,209 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) [2022-04-06 14:33:57,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-06 14:33:57,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:33:57,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-06 14:33:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:57,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:57,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665554042] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:57,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:57,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-04-06 14:33:57,649 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:57,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1480893910] [2022-04-06 14:33:57,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1480893910] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:57,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:57,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 14:33:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114306814] [2022-04-06 14:33:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:57,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 14:33:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 14:33:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 14:33:57,650 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) [2022-04-06 14:33:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:57,885 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-04-06 14:33:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 14:33:57,886 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 [2022-04-06 14:33:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:57,886 INFO L225 Difference]: With dead ends: 32 [2022-04-06 14:33:57,886 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 14:33:57,887 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2022-04-06 14:33:57,887 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:57,887 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:33:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 14:33:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 14:33:57,889 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) [2022-04-06 14:33:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-04-06 14:33:57,890 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2022-04-06 14:33:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:57,890 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-04-06 14:33:57,890 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) [2022-04-06 14:33:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-04-06 14:33:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-06 14:33:57,890 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:57,890 INFO L499 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:57,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:58,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:58,294 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 [2022-04-06 14:33:58,294 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:33:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:33:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 29 times [2022-04-06 14:33:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:58,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1259174216] [2022-04-06 14:33:58,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:33:58,331 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:33:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1039832969, now seen corresponding path program 1 times [2022-04-06 14:33:58,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:58,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275154629] [2022-04-06 14:33:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:58,334 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_15.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_15.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:33:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:33:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733044667] [2022-04-06 14:33:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:58,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:58,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:58,339 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) [2022-04-06 14:33:58,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-06 14:33:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:58,373 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:33:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:33:58,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:33:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 30 times [2022-04-06 14:33:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:33:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236080317] [2022-04-06 14:33:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:33:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:33:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:33:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:33:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:58,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:33:58,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236080317] [2022-04-06 14:33:58,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236080317] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:33:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751708420] [2022-04-06 14:33:58,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:33:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:33:58,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:33:58,569 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) [2022-04-06 14:33:58,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-06 14:33:58,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-04-06 14:33:58,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:33:58,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-06 14:33:58,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:33:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:58,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:33:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:33:59,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751708420] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:33:59,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:33:59,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 39 [2022-04-06 14:33:59,334 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:33:59,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1259174216] [2022-04-06 14:33:59,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1259174216] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:33:59,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:33:59,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 14:33:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578310398] [2022-04-06 14:33:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:33:59,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 14:33:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:33:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 14:33:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2022-04-06 14:33:59,336 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) [2022-04-06 14:33:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:33:59,608 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-04-06 14:33:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 14:33:59,608 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 [2022-04-06 14:33:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:33:59,608 INFO L225 Difference]: With dead ends: 33 [2022-04-06 14:33:59,608 INFO L226 Difference]: Without dead ends: 28 [2022-04-06 14:33:59,609 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=729, Invalid=2241, Unknown=0, NotChecked=0, Total=2970 [2022-04-06 14:33:59,610 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:33:59,610 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:33:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-06 14:33:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-04-06 14:33:59,612 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) [2022-04-06 14:33:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-04-06 14:33:59,612 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2022-04-06 14:33:59,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:33:59,612 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-04-06 14:33:59,612 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) [2022-04-06 14:33:59,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-04-06 14:33:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 14:33:59,613 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:33:59,613 INFO L499 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:33:59,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-06 14:33:59,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-04-06 14:34:00,015 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 [2022-04-06 14:34:00,016 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 31 times [2022-04-06 14:34:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:00,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [367515165] [2022-04-06 14:34:00,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:00,067 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash -980727625, now seen corresponding path program 1 times [2022-04-06 14:34:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:00,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422721279] [2022-04-06 14:34:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:00,074 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_16.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_16.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:00,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44778120] [2022-04-06 14:34:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:00,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:00,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:00,079 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) [2022-04-06 14:34:00,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-06 14:34:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:00,120 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:00,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 32 times [2022-04-06 14:34:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:00,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223034476] [2022-04-06 14:34:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:00,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223034476] [2022-04-06 14:34:00,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223034476] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647664168] [2022-04-06 14:34:00,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:00,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:00,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:00,327 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) [2022-04-06 14:34:00,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-06 14:34:00,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:00,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:00,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 35 conjunts are in the unsatisfiable core [2022-04-06 14:34:00,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:00,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:00,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647664168] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:00,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:00,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 38 [2022-04-06 14:34:00,886 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:00,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [367515165] [2022-04-06 14:34:00,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [367515165] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:00,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:00,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 14:34:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152559354] [2022-04-06 14:34:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:00,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 14:34:00,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 14:34:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1010, Unknown=0, NotChecked=0, Total=1406 [2022-04-06 14:34:00,888 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) [2022-04-06 14:34:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:01,191 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-04-06 14:34:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 14:34:01,192 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 [2022-04-06 14:34:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:01,192 INFO L225 Difference]: With dead ends: 34 [2022-04-06 14:34:01,192 INFO L226 Difference]: Without dead ends: 29 [2022-04-06 14:34:01,193 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=785, Invalid=2185, Unknown=0, NotChecked=0, Total=2970 [2022-04-06 14:34:01,193 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:01,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:34:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-06 14:34:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-06 14:34:01,196 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) [2022-04-06 14:34:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-04-06 14:34:01,196 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2022-04-06 14:34:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:01,196 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-04-06 14:34:01,196 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) [2022-04-06 14:34:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-04-06 14:34:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 14:34:01,197 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:01,197 INFO L499 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:01,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-04-06 14:34:01,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-04-06 14:34:01,599 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 [2022-04-06 14:34:01,599 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 33 times [2022-04-06 14:34:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2130514906] [2022-04-06 14:34:01,623 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:01,623 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:01,623 INFO L85 PathProgramCache]: Analyzing trace with hash -921622281, now seen corresponding path program 1 times [2022-04-06 14:34:01,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:01,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823263197] [2022-04-06 14:34:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:01,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:01,626 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_17.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_17.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:01,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538313578] [2022-04-06 14:34:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:01,630 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) [2022-04-06 14:34:01,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-06 14:34:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:01,675 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:01,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 34 times [2022-04-06 14:34:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179479148] [2022-04-06 14:34:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:01,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:01,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179479148] [2022-04-06 14:34:01,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179479148] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:01,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374372884] [2022-04-06 14:34:01,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:01,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:01,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:01,911 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) [2022-04-06 14:34:01,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-06 14:34:01,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:01,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:01,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-06 14:34:01,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:02,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374372884] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:02,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 40 [2022-04-06 14:34:02,535 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2130514906] [2022-04-06 14:34:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2130514906] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:02,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 14:34:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203788538] [2022-04-06 14:34:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:02,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 14:34:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 14:34:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1123, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 14:34:02,537 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) [2022-04-06 14:34:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:02,878 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-04-06 14:34:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 14:34:02,878 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 [2022-04-06 14:34:02,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:02,879 INFO L225 Difference]: With dead ends: 35 [2022-04-06 14:34:02,879 INFO L226 Difference]: Without dead ends: 30 [2022-04-06 14:34:02,880 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=867, Invalid=2439, Unknown=0, NotChecked=0, Total=3306 [2022-04-06 14:34:02,880 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:02,880 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:34:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-06 14:34:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-06 14:34:02,882 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) [2022-04-06 14:34:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-04-06 14:34:02,883 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2022-04-06 14:34:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:02,883 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-04-06 14:34:02,883 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) [2022-04-06 14:34:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-04-06 14:34:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 14:34:02,883 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:02,883 INFO L499 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:02,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:03,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:03,284 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 [2022-04-06 14:34:03,284 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 35 times [2022-04-06 14:34:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:03,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [182535265] [2022-04-06 14:34:03,313 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:03,313 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash -862516937, now seen corresponding path program 1 times [2022-04-06 14:34:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:03,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423823053] [2022-04-06 14:34:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:03,316 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_18.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_18.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:03,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137469086] [2022-04-06 14:34:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:03,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:03,322 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) [2022-04-06 14:34:03,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-06 14:34:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:03,369 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:03,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 36 times [2022-04-06 14:34:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:03,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127219823] [2022-04-06 14:34:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:03,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127219823] [2022-04-06 14:34:03,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127219823] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821223320] [2022-04-06 14:34:03,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:03,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:03,613 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) [2022-04-06 14:34:03,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-06 14:34:03,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-04-06 14:34:03,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:03,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-06 14:34:03,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:03,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:06,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821223320] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:06,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:06,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 24] total 45 [2022-04-06 14:34:06,491 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:06,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [182535265] [2022-04-06 14:34:06,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [182535265] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:06,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:06,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-04-06 14:34:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197758193] [2022-04-06 14:34:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:06,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 14:34:06,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 14:34:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1475, Unknown=0, NotChecked=0, Total=1980 [2022-04-06 14:34:06,492 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) [2022-04-06 14:34:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:06,862 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-04-06 14:34:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 14:34:06,862 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 [2022-04-06 14:34:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:06,862 INFO L225 Difference]: With dead ends: 36 [2022-04-06 14:34:06,862 INFO L226 Difference]: Without dead ends: 31 [2022-04-06 14:34:06,863 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2022-04-06 14:34:06,864 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:06,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-06 14:34:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-06 14:34:06,866 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) [2022-04-06 14:34:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-04-06 14:34:06,867 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2022-04-06 14:34:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:06,867 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-04-06 14:34:06,867 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) [2022-04-06 14:34:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-04-06 14:34:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 14:34:06,867 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:06,867 INFO L499 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:06,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-04-06 14:34:07,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-04-06 14:34:07,268 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 [2022-04-06 14:34:07,268 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 37 times [2022-04-06 14:34:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1460531949] [2022-04-06 14:34:07,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:07,320 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -803411593, now seen corresponding path program 1 times [2022-04-06 14:34:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093812185] [2022-04-06 14:34:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:07,322 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_19.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_19.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392666360] [2022-04-06 14:34:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:07,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:07,327 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) [2022-04-06 14:34:07,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-06 14:34:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:07,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:07,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 38 times [2022-04-06 14:34:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:07,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602483394] [2022-04-06 14:34:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:07,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602483394] [2022-04-06 14:34:07,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602483394] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296882761] [2022-04-06 14:34:07,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:07,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:07,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:07,623 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) [2022-04-06 14:34:07,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-06 14:34:07,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:07,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:07,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-06 14:34:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:07,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:08,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296882761] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:08,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:08,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 44 [2022-04-06 14:34:08,336 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:08,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1460531949] [2022-04-06 14:34:08,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1460531949] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:08,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:08,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 14:34:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547009127] [2022-04-06 14:34:08,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:08,337 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 14:34:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 14:34:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1367, Unknown=0, NotChecked=0, Total=1892 [2022-04-06 14:34:08,338 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) [2022-04-06 14:34:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:08,703 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-04-06 14:34:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 14:34:08,703 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 [2022-04-06 14:34:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:08,703 INFO L225 Difference]: With dead ends: 37 [2022-04-06 14:34:08,703 INFO L226 Difference]: Without dead ends: 32 [2022-04-06 14:34:08,704 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1043, Invalid=2989, Unknown=0, NotChecked=0, Total=4032 [2022-04-06 14:34:08,705 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:08,705 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:34:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-06 14:34:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-06 14:34:08,707 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) [2022-04-06 14:34:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-04-06 14:34:08,707 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2022-04-06 14:34:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:08,707 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-04-06 14:34:08,708 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) [2022-04-06 14:34:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-04-06 14:34:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 14:34:08,708 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:08,708 INFO L499 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:08,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-04-06 14:34:08,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:09,122 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 [2022-04-06 14:34:09,123 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 39 times [2022-04-06 14:34:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:09,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [483845592] [2022-04-06 14:34:10,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:10,185 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash -744306249, now seen corresponding path program 1 times [2022-04-06 14:34:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:10,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982000514] [2022-04-06 14:34:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:10,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:10,188 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_20.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_20.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150402204] [2022-04-06 14:34:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:10,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:10,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:10,199 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) [2022-04-06 14:34:10,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-06 14:34:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:10,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:10,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 40 times [2022-04-06 14:34:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:10,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819567946] [2022-04-06 14:34:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819567946] [2022-04-06 14:34:10,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819567946] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841538477] [2022-04-06 14:34:10,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:10,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:10,524 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) [2022-04-06 14:34:10,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-06 14:34:10,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:10,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:10,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 43 conjunts are in the unsatisfiable core [2022-04-06 14:34:10,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:10,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:11,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841538477] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:11,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:11,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 46 [2022-04-06 14:34:11,337 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [483845592] [2022-04-06 14:34:11,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [483845592] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:11,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:11,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-04-06 14:34:11,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055526204] [2022-04-06 14:34:11,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:11,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-06 14:34:11,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-06 14:34:11,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=1498, Unknown=0, NotChecked=0, Total=2070 [2022-04-06 14:34:11,339 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) [2022-04-06 14:34:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:11,726 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-04-06 14:34:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-06 14:34:11,726 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 [2022-04-06 14:34:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:11,727 INFO L225 Difference]: With dead ends: 38 [2022-04-06 14:34:11,727 INFO L226 Difference]: Without dead ends: 33 [2022-04-06 14:34:11,728 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1137, Invalid=3285, Unknown=0, NotChecked=0, Total=4422 [2022-04-06 14:34:11,729 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:11,729 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:11,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-06 14:34:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-06 14:34:11,734 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) [2022-04-06 14:34:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-04-06 14:34:11,735 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2022-04-06 14:34:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:11,735 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-04-06 14:34:11,735 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) [2022-04-06 14:34:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-04-06 14:34:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 14:34:11,736 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:11,737 INFO L499 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:11,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:11,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-04-06 14:34:12,153 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 [2022-04-06 14:34:12,154 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 41 times [2022-04-06 14:34:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [216048230] [2022-04-06 14:34:12,192 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:12,192 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash -685200905, now seen corresponding path program 1 times [2022-04-06 14:34:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:12,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217096350] [2022-04-06 14:34:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:12,195 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_21.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_21.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642325725] [2022-04-06 14:34:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:12,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:12,200 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) [2022-04-06 14:34:12,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-06 14:34:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:12,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:12,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 42 times [2022-04-06 14:34:12,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868948748] [2022-04-06 14:34:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:12,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868948748] [2022-04-06 14:34:12,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868948748] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:12,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292012545] [2022-04-06 14:34:12,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:12,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:12,543 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) [2022-04-06 14:34:12,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-06 14:34:12,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-04-06 14:34:12,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 51 conjunts are in the unsatisfiable core [2022-04-06 14:34:12,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:12,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292012545] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:13,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:13,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 27] total 51 [2022-04-06 14:34:13,905 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [216048230] [2022-04-06 14:34:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [216048230] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:13,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:13,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 14:34:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460965610] [2022-04-06 14:34:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:13,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 14:34:13,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:13,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 14:34:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1901, Unknown=0, NotChecked=0, Total=2550 [2022-04-06 14:34:13,907 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) [2022-04-06 14:34:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:14,385 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-04-06 14:34:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 14:34:14,385 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 [2022-04-06 14:34:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:14,386 INFO L225 Difference]: With dead ends: 39 [2022-04-06 14:34:14,386 INFO L226 Difference]: Without dead ends: 34 [2022-04-06 14:34:14,387 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2022-04-06 14:34:14,388 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:14,388 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-06 14:34:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-06 14:34:14,390 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) [2022-04-06 14:34:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-04-06 14:34:14,390 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2022-04-06 14:34:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:14,390 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-04-06 14:34:14,390 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) [2022-04-06 14:34:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-04-06 14:34:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 14:34:14,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:14,391 INFO L499 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:14,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:14,795 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 [2022-04-06 14:34:14,796 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 43 times [2022-04-06 14:34:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:14,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1059293396] [2022-04-06 14:34:14,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:14,832 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash -626095561, now seen corresponding path program 1 times [2022-04-06 14:34:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:14,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82899846] [2022-04-06 14:34:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:14,835 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_22.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_22.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:14,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993568504] [2022-04-06 14:34:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:14,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:14,843 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) [2022-04-06 14:34:14,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-06 14:34:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:14,883 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:14,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 44 times [2022-04-06 14:34:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:14,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724069725] [2022-04-06 14:34:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:14,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:15,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724069725] [2022-04-06 14:34:15,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724069725] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:15,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638877203] [2022-04-06 14:34:15,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:15,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:15,225 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) [2022-04-06 14:34:15,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-06 14:34:15,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:15,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:15,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-06 14:34:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:15,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:16,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638877203] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:16,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:16,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-04-06 14:34:16,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:16,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1059293396] [2022-04-06 14:34:16,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1059293396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:16,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:16,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-04-06 14:34:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102720040] [2022-04-06 14:34:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:16,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-06 14:34:16,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-06 14:34:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-04-06 14:34:16,121 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) [2022-04-06 14:34:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:16,556 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-04-06 14:34:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 14:34:16,556 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 [2022-04-06 14:34:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:16,556 INFO L225 Difference]: With dead ends: 40 [2022-04-06 14:34:16,556 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 14:34:16,557 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1337, Invalid=3919, Unknown=0, NotChecked=0, Total=5256 [2022-04-06 14:34:16,558 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:16,558 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 14:34:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 14:34:16,560 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) [2022-04-06 14:34:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-04-06 14:34:16,560 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2022-04-06 14:34:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:16,561 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-04-06 14:34:16,561 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) [2022-04-06 14:34:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-04-06 14:34:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 14:34:16,561 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:16,561 INFO L499 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:16,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-04-06 14:34:16,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:16,965 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 [2022-04-06 14:34:16,965 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 45 times [2022-04-06 14:34:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:16,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1222331719] [2022-04-06 14:34:16,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:16,988 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash -566990217, now seen corresponding path program 1 times [2022-04-06 14:34:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:16,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37652650] [2022-04-06 14:34:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:16,990 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_23.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_23.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:16,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289248707] [2022-04-06 14:34:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:16,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:16,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:16,994 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) [2022-04-06 14:34:16,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-06 14:34:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:17,030 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:17,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 46 times [2022-04-06 14:34:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:17,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113541823] [2022-04-06 14:34:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:17,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:17,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113541823] [2022-04-06 14:34:17,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113541823] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272478968] [2022-04-06 14:34:17,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:17,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:17,367 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) [2022-04-06 14:34:17,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-06 14:34:17,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:17,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:17,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 49 conjunts are in the unsatisfiable core [2022-04-06 14:34:17,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:17,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:18,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272478968] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:18,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:18,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 52 [2022-04-06 14:34:18,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1222331719] [2022-04-06 14:34:18,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1222331719] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:18,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:18,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-04-06 14:34:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939723753] [2022-04-06 14:34:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:18,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-06 14:34:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-06 14:34:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-04-06 14:34:18,333 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) [2022-04-06 14:34:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:18,855 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-04-06 14:34:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-06 14:34:18,855 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 [2022-04-06 14:34:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:18,856 INFO L225 Difference]: With dead ends: 41 [2022-04-06 14:34:18,856 INFO L226 Difference]: Without dead ends: 36 [2022-04-06 14:34:18,856 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1443, Invalid=4257, Unknown=0, NotChecked=0, Total=5700 [2022-04-06 14:34:18,856 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:18,857 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-06 14:34:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-06 14:34:18,859 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) [2022-04-06 14:34:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-04-06 14:34:18,859 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2022-04-06 14:34:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:18,860 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-04-06 14:34:18,860 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) [2022-04-06 14:34:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-04-06 14:34:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-06 14:34:18,860 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:18,860 INFO L499 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:18,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:19,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-04-06 14:34:19,264 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 [2022-04-06 14:34:19,264 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 47 times [2022-04-06 14:34:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:19,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1968485221] [2022-04-06 14:34:19,288 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:19,288 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash -507884873, now seen corresponding path program 1 times [2022-04-06 14:34:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969014924] [2022-04-06 14:34:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:19,291 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_24.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_24.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:34:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845761490] [2022-04-06 14:34:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:19,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:19,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:19,295 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) [2022-04-06 14:34:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-06 14:34:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:19,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:19,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 48 times [2022-04-06 14:34:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:19,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217958751] [2022-04-06 14:34:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:19,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:19,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:19,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217958751] [2022-04-06 14:34:19,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217958751] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:19,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934003927] [2022-04-06 14:34:19,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:19,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:19,720 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) [2022-04-06 14:34:19,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-06 14:34:20,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-04-06 14:34:20,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:20,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-06 14:34:20,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:20,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:21,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934003927] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:21,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:21,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 30] total 57 [2022-04-06 14:34:21,494 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:21,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1968485221] [2022-04-06 14:34:21,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1968485221] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:21,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:21,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-04-06 14:34:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841169588] [2022-04-06 14:34:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:21,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-06 14:34:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-06 14:34:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2381, Unknown=0, NotChecked=0, Total=3192 [2022-04-06 14:34:21,495 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) [2022-04-06 14:34:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:22,060 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-04-06 14:34:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-06 14:34:22,060 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 [2022-04-06 14:34:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:22,061 INFO L225 Difference]: With dead ends: 42 [2022-04-06 14:34:22,061 INFO L226 Difference]: Without dead ends: 37 [2022-04-06 14:34:22,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1584, Invalid=5058, Unknown=0, NotChecked=0, Total=6642 [2022-04-06 14:34:22,062 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:22,062 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:22,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-06 14:34:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-04-06 14:34:22,066 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) [2022-04-06 14:34:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-04-06 14:34:22,066 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2022-04-06 14:34:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:22,066 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-04-06 14:34:22,066 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) [2022-04-06 14:34:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-04-06 14:34:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 14:34:22,068 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:22,068 INFO L499 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:22,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:22,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:22,468 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 [2022-04-06 14:34:22,468 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 49 times [2022-04-06 14:34:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1748602460] [2022-04-06 14:34:22,496 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:22,497 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash -448779529, now seen corresponding path program 1 times [2022-04-06 14:34:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:22,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094126756] [2022-04-06 14:34:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:22,499 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_25.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_25.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:22,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902733137] [2022-04-06 14:34:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:22,504 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) [2022-04-06 14:34:22,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-06 14:34:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:22,545 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:22,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 50 times [2022-04-06 14:34:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:22,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851895703] [2022-04-06 14:34:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851895703] [2022-04-06 14:34:22,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851895703] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132492808] [2022-04-06 14:34:22,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:22,906 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) [2022-04-06 14:34:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-06 14:34:22,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:22,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:22,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2022-04-06 14:34:22,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:23,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:24,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132492808] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:24,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:24,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 56 [2022-04-06 14:34:24,018 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1748602460] [2022-04-06 14:34:24,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1748602460] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:24,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:24,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-04-06 14:34:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575119968] [2022-04-06 14:34:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:24,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-06 14:34:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-06 14:34:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2243, Unknown=0, NotChecked=0, Total=3080 [2022-04-06 14:34:24,019 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) [2022-04-06 14:34:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:24,576 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-04-06 14:34:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-06 14:34:24,576 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 [2022-04-06 14:34:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:24,577 INFO L225 Difference]: With dead ends: 43 [2022-04-06 14:34:24,577 INFO L226 Difference]: Without dead ends: 38 [2022-04-06 14:34:24,578 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1667, Invalid=4975, Unknown=0, NotChecked=0, Total=6642 [2022-04-06 14:34:24,578 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:24,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-06 14:34:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-06 14:34:24,581 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) [2022-04-06 14:34:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-04-06 14:34:24,581 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2022-04-06 14:34:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:24,581 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-04-06 14:34:24,581 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) [2022-04-06 14:34:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-04-06 14:34:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 14:34:24,582 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:24,582 INFO L499 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:24,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-04-06 14:34:24,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-04-06 14:34:24,997 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 [2022-04-06 14:34:24,998 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 51 times [2022-04-06 14:34:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:24,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1730056180] [2022-04-06 14:34:25,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:25,032 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash -389674185, now seen corresponding path program 1 times [2022-04-06 14:34:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:25,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638285819] [2022-04-06 14:34:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:25,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:25,035 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_26.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_26.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:25,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802935697] [2022-04-06 14:34:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:25,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:25,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:25,039 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) [2022-04-06 14:34:25,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-06 14:34:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:25,084 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:25,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 52 times [2022-04-06 14:34:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:25,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080250538] [2022-04-06 14:34:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:25,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080250538] [2022-04-06 14:34:25,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080250538] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78099579] [2022-04-06 14:34:25,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:25,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:25,493 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) [2022-04-06 14:34:25,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-06 14:34:25,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:25,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:25,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 55 conjunts are in the unsatisfiable core [2022-04-06 14:34:25,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:25,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:26,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78099579] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:26,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:26,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 58 [2022-04-06 14:34:26,767 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1730056180] [2022-04-06 14:34:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1730056180] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:26,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-04-06 14:34:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725923603] [2022-04-06 14:34:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:26,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-06 14:34:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-06 14:34:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=2410, Unknown=0, NotChecked=0, Total=3306 [2022-04-06 14:34:26,768 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) [2022-04-06 14:34:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:27,345 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-04-06 14:34:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-06 14:34:27,346 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 [2022-04-06 14:34:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:27,346 INFO L225 Difference]: With dead ends: 44 [2022-04-06 14:34:27,346 INFO L226 Difference]: Without dead ends: 39 [2022-04-06 14:34:27,350 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=5355, Unknown=0, NotChecked=0, Total=7140 [2022-04-06 14:34:27,350 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:27,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-06 14:34:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-06 14:34:27,353 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) [2022-04-06 14:34:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-04-06 14:34:27,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2022-04-06 14:34:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:27,353 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-04-06 14:34:27,353 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) [2022-04-06 14:34:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-04-06 14:34:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 14:34:27,353 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:27,353 INFO L499 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:27,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:27,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-04-06 14:34:27,754 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 [2022-04-06 14:34:27,754 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 53 times [2022-04-06 14:34:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2094307402] [2022-04-06 14:34:27,779 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:27,779 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash -330568841, now seen corresponding path program 1 times [2022-04-06 14:34:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:27,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024080852] [2022-04-06 14:34:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:27,781 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_27.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_27.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:27,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096597845] [2022-04-06 14:34:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:27,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:27,785 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) [2022-04-06 14:34:27,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-06 14:34:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:27,837 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:27,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 54 times [2022-04-06 14:34:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:27,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648855492] [2022-04-06 14:34:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:28,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:28,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648855492] [2022-04-06 14:34:28,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648855492] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:28,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069931449] [2022-04-06 14:34:28,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:28,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:28,232 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) [2022-04-06 14:34:28,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-06 14:34:28,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-04-06 14:34:28,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-06 14:34:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:28,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:34,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069931449] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:34,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:34,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 60 [2022-04-06 14:34:34,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2094307402] [2022-04-06 14:34:34,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2094307402] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:34,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:34,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-04-06 14:34:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219241075] [2022-04-06 14:34:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:34,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-06 14:34:34,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-06 14:34:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=2583, Unknown=0, NotChecked=0, Total=3540 [2022-04-06 14:34:34,279 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) [2022-04-06 14:34:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:34,910 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-04-06 14:34:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-04-06 14:34:34,910 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 [2022-04-06 14:34:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:34,910 INFO L225 Difference]: With dead ends: 45 [2022-04-06 14:34:34,910 INFO L226 Difference]: Without dead ends: 40 [2022-04-06 14:34:34,911 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1907, Invalid=5749, Unknown=0, NotChecked=0, Total=7656 [2022-04-06 14:34:34,911 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:34,911 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 14:34:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-06 14:34:34,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-06 14:34:34,914 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) [2022-04-06 14:34:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2022-04-06 14:34:34,914 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2022-04-06 14:34:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:34,914 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2022-04-06 14:34:34,914 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) [2022-04-06 14:34:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2022-04-06 14:34:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 14:34:34,914 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:34,914 INFO L499 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:34,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:35,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-04-06 14:34:35,315 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 [2022-04-06 14:34:35,315 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 55 times [2022-04-06 14:34:35,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:35,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1591473780] [2022-04-06 14:34:35,338 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:35,338 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:35,338 INFO L85 PathProgramCache]: Analyzing trace with hash -271463497, now seen corresponding path program 1 times [2022-04-06 14:34:35,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:35,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702671324] [2022-04-06 14:34:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:35,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:35,344 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_28.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_28.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:35,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648805765] [2022-04-06 14:34:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:35,349 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) [2022-04-06 14:34:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-06 14:34:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:35,387 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:35,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 56 times [2022-04-06 14:34:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:35,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824912133] [2022-04-06 14:34:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:35,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824912133] [2022-04-06 14:34:35,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824912133] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:35,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838715772] [2022-04-06 14:34:35,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:35,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:35,813 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) [2022-04-06 14:34:35,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-06 14:34:35,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-06 14:34:35,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:35,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:37,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838715772] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:37,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:37,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 62 [2022-04-06 14:34:37,239 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:37,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1591473780] [2022-04-06 14:34:37,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1591473780] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:37,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:37,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-04-06 14:34:37,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622455820] [2022-04-06 14:34:37,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:37,240 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-06 14:34:37,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-06 14:34:37,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2022-04-06 14:34:37,241 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) [2022-04-06 14:34:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:37,949 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-04-06 14:34:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-06 14:34:37,949 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 [2022-04-06 14:34:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:37,950 INFO L225 Difference]: With dead ends: 46 [2022-04-06 14:34:37,950 INFO L226 Difference]: Without dead ends: 41 [2022-04-06 14:34:37,951 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2033, Invalid=6157, Unknown=0, NotChecked=0, Total=8190 [2022-04-06 14:34:37,951 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:37,951 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:34:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-06 14:34:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-06 14:34:37,954 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) [2022-04-06 14:34:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-04-06 14:34:37,954 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2022-04-06 14:34:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:37,954 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-04-06 14:34:37,954 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) [2022-04-06 14:34:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-04-06 14:34:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 14:34:37,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:37,955 INFO L499 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:37,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-04-06 14:34:38,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-04-06 14:34:38,371 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 [2022-04-06 14:34:38,371 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:38,371 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 57 times [2022-04-06 14:34:38,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:38,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1757933084] [2022-04-06 14:34:38,412 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:38,412 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -212358153, now seen corresponding path program 1 times [2022-04-06 14:34:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365371486] [2022-04-06 14:34:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:38,428 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_29.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_29.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:38,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229788334] [2022-04-06 14:34:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:38,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:38,432 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) [2022-04-06 14:34:38,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-06 14:34:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:38,471 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:38,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 58 times [2022-04-06 14:34:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915127213] [2022-04-06 14:34:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:38,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915127213] [2022-04-06 14:34:38,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915127213] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:38,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593216827] [2022-04-06 14:34:38,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:38,965 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) [2022-04-06 14:34:38,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-06 14:34:39,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:39,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:39,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 61 conjunts are in the unsatisfiable core [2022-04-06 14:34:39,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:39,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:40,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593216827] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:40,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:40,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 64 [2022-04-06 14:34:40,405 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:40,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1757933084] [2022-04-06 14:34:40,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1757933084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:40,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:40,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-04-06 14:34:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732701798] [2022-04-06 14:34:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:40,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-06 14:34:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-06 14:34:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=2947, Unknown=0, NotChecked=0, Total=4032 [2022-04-06 14:34:40,406 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) [2022-04-06 14:34:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:41,163 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-04-06 14:34:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-06 14:34:41,164 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 [2022-04-06 14:34:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:41,164 INFO L225 Difference]: With dead ends: 47 [2022-04-06 14:34:41,164 INFO L226 Difference]: Without dead ends: 42 [2022-04-06 14:34:41,165 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2163, Invalid=6579, Unknown=0, NotChecked=0, Total=8742 [2022-04-06 14:34:41,165 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:41,165 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:34:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-06 14:34:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-04-06 14:34:41,168 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) [2022-04-06 14:34:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-04-06 14:34:41,168 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2022-04-06 14:34:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:41,168 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-04-06 14:34:41,168 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) [2022-04-06 14:34:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-04-06 14:34:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 14:34:41,168 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:41,169 INFO L499 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:41,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-04-06 14:34:41,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:41,572 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 [2022-04-06 14:34:41,572 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 59 times [2022-04-06 14:34:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:41,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [199330343] [2022-04-06 14:34:41,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:41,606 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -153252809, now seen corresponding path program 1 times [2022-04-06 14:34:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:41,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843028182] [2022-04-06 14:34:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:41,609 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_30.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_30.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:41,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410490013] [2022-04-06 14:34:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:41,613 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) [2022-04-06 14:34:41,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-06 14:34:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:41,652 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:41,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 60 times [2022-04-06 14:34:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:41,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327915729] [2022-04-06 14:34:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:42,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327915729] [2022-04-06 14:34:42,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327915729] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:42,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205863537] [2022-04-06 14:34:42,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:42,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:42,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:42,147 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) [2022-04-06 14:34:42,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-06 14:34:43,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-04-06 14:34:43,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 70 conjunts are in the unsatisfiable core [2022-04-06 14:34:43,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:43,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205863537] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:50,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:50,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 36] total 69 [2022-04-06 14:34:50,372 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:50,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [199330343] [2022-04-06 14:34:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [199330343] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:50,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:50,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-04-06 14:34:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164730970] [2022-04-06 14:34:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:50,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-06 14:34:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-06 14:34:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3503, Unknown=0, NotChecked=0, Total=4692 [2022-04-06 14:34:50,373 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) [2022-04-06 14:34:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:51,190 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-04-06 14:34:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-06 14:34:51,190 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 [2022-04-06 14:34:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:51,191 INFO L225 Difference]: With dead ends: 48 [2022-04-06 14:34:51,191 INFO L226 Difference]: Without dead ends: 43 [2022-04-06 14:34:51,192 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2334, Invalid=7566, Unknown=0, NotChecked=0, Total=9900 [2022-04-06 14:34:51,192 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:51,192 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:34:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-06 14:34:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-04-06 14:34:51,195 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) [2022-04-06 14:34:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-04-06 14:34:51,195 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2022-04-06 14:34:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:51,195 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-04-06 14:34:51,196 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) [2022-04-06 14:34:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-04-06 14:34:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 14:34:51,196 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:51,196 INFO L499 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:51,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:51,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:51,599 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 [2022-04-06 14:34:51,600 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 61 times [2022-04-06 14:34:51,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:51,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2113049834] [2022-04-06 14:34:51,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:51,632 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -94147465, now seen corresponding path program 1 times [2022-04-06 14:34:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578438938] [2022-04-06 14:34:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:51,635 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_31.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_31.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:51,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888346572] [2022-04-06 14:34:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:51,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:51,639 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) [2022-04-06 14:34:51,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-06 14:34:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:51,706 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:51,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 62 times [2022-04-06 14:34:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:51,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147342113] [2022-04-06 14:34:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147342113] [2022-04-06 14:34:52,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147342113] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:52,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300966942] [2022-04-06 14:34:52,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:34:52,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:52,254 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) [2022-04-06 14:34:52,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-06 14:34:52,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:34:52,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:52,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-06 14:34:52,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:52,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300966942] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:53,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:53,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 68 [2022-04-06 14:34:53,861 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2113049834] [2022-04-06 14:34:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2113049834] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:53,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:53,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-04-06 14:34:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855266785] [2022-04-06 14:34:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:53,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-04-06 14:34:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-04-06 14:34:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=3335, Unknown=0, NotChecked=0, Total=4556 [2022-04-06 14:34:53,863 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) [2022-04-06 14:34:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:54,714 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-04-06 14:34:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-06 14:34:54,714 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 [2022-04-06 14:34:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:54,715 INFO L225 Difference]: With dead ends: 49 [2022-04-06 14:34:54,715 INFO L226 Difference]: Without dead ends: 44 [2022-04-06 14:34:54,716 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2435, Invalid=7465, Unknown=0, NotChecked=0, Total=9900 [2022-04-06 14:34:54,716 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:54,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 168 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:34:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-06 14:34:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-04-06 14:34:54,718 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) [2022-04-06 14:34:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-04-06 14:34:54,718 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2022-04-06 14:34:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:54,719 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-04-06 14:34:54,719 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) [2022-04-06 14:34:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-04-06 14:34:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 14:34:54,719 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:54,719 INFO L499 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:54,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:54,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-04-06 14:34:55,120 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 [2022-04-06 14:34:55,120 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 63 times [2022-04-06 14:34:55,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:55,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1560708610] [2022-04-06 14:34:55,153 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:55,153 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:55,153 INFO L85 PathProgramCache]: Analyzing trace with hash -35042121, now seen corresponding path program 1 times [2022-04-06 14:34:55,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:55,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410281407] [2022-04-06 14:34:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:55,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:55,157 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_32.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_32.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:55,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897733892] [2022-04-06 14:34:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:55,161 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) [2022-04-06 14:34:55,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-06 14:34:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:55,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:55,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 64 times [2022-04-06 14:34:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:55,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335304020] [2022-04-06 14:34:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:55,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335304020] [2022-04-06 14:34:55,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335304020] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:55,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663895180] [2022-04-06 14:34:55,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:34:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:55,715 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) [2022-04-06 14:34:55,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-06 14:34:55,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:34:55,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:34:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 67 conjunts are in the unsatisfiable core [2022-04-06 14:34:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:34:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:55,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:34:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:57,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663895180] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:34:57,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:34:57,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 70 [2022-04-06 14:34:57,449 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:57,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1560708610] [2022-04-06 14:34:57,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1560708610] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:57,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:57,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-04-06 14:34:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770884846] [2022-04-06 14:34:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:57,449 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-06 14:34:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-06 14:34:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1292, Invalid=3538, Unknown=0, NotChecked=0, Total=4830 [2022-04-06 14:34:57,450 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) [2022-04-06 14:34:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:58,270 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-04-06 14:34:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-06 14:34:58,270 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 [2022-04-06 14:34:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:58,271 INFO L225 Difference]: With dead ends: 50 [2022-04-06 14:34:58,271 INFO L226 Difference]: Without dead ends: 45 [2022-04-06 14:34:58,272 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2577, Invalid=7929, Unknown=0, NotChecked=0, Total=10506 [2022-04-06 14:34:58,272 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:58,272 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:34:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-06 14:34:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-04-06 14:34:58,274 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) [2022-04-06 14:34:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-04-06 14:34:58,275 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2022-04-06 14:34:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:58,275 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-04-06 14:34:58,275 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) [2022-04-06 14:34:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-04-06 14:34:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-06 14:34:58,275 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:58,275 INFO L499 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:58,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-06 14:34:58,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-04-06 14:34:58,679 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 [2022-04-06 14:34:58,679 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 65 times [2022-04-06 14:34:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:58,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1431378293] [2022-04-06 14:34:58,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:34:58,716 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:34:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 24063223, now seen corresponding path program 1 times [2022-04-06 14:34:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:58,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176728373] [2022-04-06 14:34:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:58,718 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_33.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_33.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:34:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:34:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857641108] [2022-04-06 14:34:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:58,722 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) [2022-04-06 14:34:58,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-06 14:34:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:58,759 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:34:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:34:58,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:34:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 66 times [2022-04-06 14:34:58,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:58,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93165471] [2022-04-06 14:34:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93165471] [2022-04-06 14:34:59,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93165471] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:34:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741884004] [2022-04-06 14:34:59,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:34:59,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:34:59,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:59,303 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) [2022-04-06 14:34:59,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-06 14:35:00,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-04-06 14:35:00,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:00,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 72 conjunts are in the unsatisfiable core [2022-04-06 14:35:00,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:00,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741884004] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:02,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 39] total 75 [2022-04-06 14:35:02,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1431378293] [2022-04-06 14:35:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1431378293] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:02,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-04-06 14:35:02,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243502431] [2022-04-06 14:35:02,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:02,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-04-06 14:35:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-04-06 14:35:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=4145, Unknown=0, NotChecked=0, Total=5550 [2022-04-06 14:35:02,992 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) [2022-04-06 14:35:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:03,883 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-04-06 14:35:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-06 14:35:03,884 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 [2022-04-06 14:35:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:03,884 INFO L225 Difference]: With dead ends: 51 [2022-04-06 14:35:03,884 INFO L226 Difference]: Without dead ends: 46 [2022-04-06 14:35:03,885 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2763, Invalid=9009, Unknown=0, NotChecked=0, Total=11772 [2022-04-06 14:35:03,886 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:03,886 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 14:35:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-06 14:35:03,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-04-06 14:35:03,888 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) [2022-04-06 14:35:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-04-06 14:35:03,888 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2022-04-06 14:35:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:03,888 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-04-06 14:35:03,889 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) [2022-04-06 14:35:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-04-06 14:35:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 14:35:03,889 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:03,889 INFO L499 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:03,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:04,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:04,292 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 [2022-04-06 14:35:04,292 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 67 times [2022-04-06 14:35:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:04,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2020113757] [2022-04-06 14:35:04,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:04,312 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 83168567, now seen corresponding path program 1 times [2022-04-06 14:35:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272096960] [2022-04-06 14:35:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:04,315 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_34.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_34.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:04,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461987775] [2022-04-06 14:35:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:04,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:04,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:04,319 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) [2022-04-06 14:35:04,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-06 14:35:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:04,364 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:04,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 68 times [2022-04-06 14:35:04,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:04,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050797338] [2022-04-06 14:35:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050797338] [2022-04-06 14:35:04,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050797338] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941307335] [2022-04-06 14:35:04,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:35:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:04,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:04,934 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) [2022-04-06 14:35:04,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-06 14:35:05,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:35:05,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:05,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 71 conjunts are in the unsatisfiable core [2022-04-06 14:35:05,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:05,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:06,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941307335] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:06,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:06,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 74 [2022-04-06 14:35:06,934 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:06,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2020113757] [2022-04-06 14:35:06,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2020113757] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:06,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:06,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-04-06 14:35:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222123167] [2022-04-06 14:35:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:06,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-04-06 14:35:06,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-04-06 14:35:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1440, Invalid=3962, Unknown=0, NotChecked=0, Total=5402 [2022-04-06 14:35:06,935 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) [2022-04-06 14:35:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:07,838 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-04-06 14:35:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-06 14:35:07,838 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 [2022-04-06 14:35:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:07,839 INFO L225 Difference]: With dead ends: 52 [2022-04-06 14:35:07,839 INFO L226 Difference]: Without dead ends: 47 [2022-04-06 14:35:07,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2873, Invalid=8899, Unknown=0, NotChecked=0, Total=11772 [2022-04-06 14:35:07,840 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:07,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 14:35:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-04-06 14:35:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-04-06 14:35:07,843 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) [2022-04-06 14:35:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-04-06 14:35:07,843 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2022-04-06 14:35:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:07,843 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-04-06 14:35:07,843 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) [2022-04-06 14:35:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-04-06 14:35:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 14:35:07,843 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:07,843 INFO L499 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:07,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:08,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-04-06 14:35:08,244 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 [2022-04-06 14:35:08,244 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 69 times [2022-04-06 14:35:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:08,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1755591822] [2022-04-06 14:35:08,274 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:08,274 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 142273911, now seen corresponding path program 1 times [2022-04-06 14:35:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691827070] [2022-04-06 14:35:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:08,277 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_35.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_35.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:08,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358353976] [2022-04-06 14:35:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:08,282 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) [2022-04-06 14:35:08,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-06 14:35:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:08,320 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:08,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 70 times [2022-04-06 14:35:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:08,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914400811] [2022-04-06 14:35:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914400811] [2022-04-06 14:35:08,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914400811] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:08,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250279914] [2022-04-06 14:35:08,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:35:08,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:08,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:08,950 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) [2022-04-06 14:35:08,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-06 14:35:09,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:35:09,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:09,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-06 14:35:09,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:09,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:10,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250279914] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:10,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:10,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 76 [2022-04-06 14:35:10,926 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1755591822] [2022-04-06 14:35:10,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1755591822] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:10,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:10,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-04-06 14:35:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227153430] [2022-04-06 14:35:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:10,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-06 14:35:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-06 14:35:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=4183, Unknown=0, NotChecked=0, Total=5700 [2022-04-06 14:35:10,927 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) [2022-04-06 14:35:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:11,914 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-04-06 14:35:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-04-06 14:35:11,915 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 [2022-04-06 14:35:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:11,915 INFO L225 Difference]: With dead ends: 53 [2022-04-06 14:35:11,915 INFO L226 Difference]: Without dead ends: 48 [2022-04-06 14:35:11,916 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3027, Invalid=9405, Unknown=0, NotChecked=0, Total=12432 [2022-04-06 14:35:11,916 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:11,916 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 14:35:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-04-06 14:35:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-04-06 14:35:11,918 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) [2022-04-06 14:35:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-04-06 14:35:11,919 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2022-04-06 14:35:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:11,919 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-04-06 14:35:11,919 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) [2022-04-06 14:35:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-04-06 14:35:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 14:35:11,919 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:11,919 INFO L499 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:11,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-04-06 14:35:12,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-04-06 14:35:12,335 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 [2022-04-06 14:35:12,335 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 71 times [2022-04-06 14:35:12,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:12,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1191245962] [2022-04-06 14:35:12,370 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:12,370 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash 201379255, now seen corresponding path program 1 times [2022-04-06 14:35:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:12,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162386153] [2022-04-06 14:35:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:12,373 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_36.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_36.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:12,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080549314] [2022-04-06 14:35:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:12,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:12,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:12,377 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) [2022-04-06 14:35:12,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-06 14:35:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:12,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:12,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 72 times [2022-04-06 14:35:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:12,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910933560] [2022-04-06 14:35:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910933560] [2022-04-06 14:35:13,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910933560] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991642603] [2022-04-06 14:35:13,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:35:13,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:13,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:13,071 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) [2022-04-06 14:35:13,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-06 14:35:15,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-04-06 14:35:15,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:15,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 78 conjunts are in the unsatisfiable core [2022-04-06 14:35:15,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:15,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:18,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991642603] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:18,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:18,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 42] total 81 [2022-04-06 14:35:18,350 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:18,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1191245962] [2022-04-06 14:35:18,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1191245962] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:18,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:18,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-04-06 14:35:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400757235] [2022-04-06 14:35:18,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:18,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-04-06 14:35:18,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-04-06 14:35:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4841, Unknown=0, NotChecked=0, Total=6480 [2022-04-06 14:35:18,351 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) [2022-04-06 14:35:19,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:19,406 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-04-06 14:35:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-06 14:35:19,406 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 [2022-04-06 14:35:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:19,406 INFO L225 Difference]: With dead ends: 54 [2022-04-06 14:35:19,406 INFO L226 Difference]: Without dead ends: 49 [2022-04-06 14:35:19,408 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3228, Invalid=10578, Unknown=0, NotChecked=0, Total=13806 [2022-04-06 14:35:19,408 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:19,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 14:35:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-06 14:35:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-04-06 14:35:19,410 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) [2022-04-06 14:35:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-04-06 14:35:19,411 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2022-04-06 14:35:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:19,411 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-04-06 14:35:19,411 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) [2022-04-06 14:35:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-04-06 14:35:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 14:35:19,411 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:19,411 INFO L499 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:19,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-04-06 14:35:19,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:19,813 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 [2022-04-06 14:35:19,813 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:19,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:19,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 73 times [2022-04-06 14:35:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:19,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1839808864] [2022-04-06 14:35:19,839 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:19,840 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash 260484599, now seen corresponding path program 1 times [2022-04-06 14:35:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587300416] [2022-04-06 14:35:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:19,842 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_37.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_37.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668848214] [2022-04-06 14:35:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:19,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:19,846 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) [2022-04-06 14:35:19,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-06 14:35:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:19,891 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:19,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 74 times [2022-04-06 14:35:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:19,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098350166] [2022-04-06 14:35:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098350166] [2022-04-06 14:35:20,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098350166] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551914581] [2022-04-06 14:35:20,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:35:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:20,559 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) [2022-04-06 14:35:20,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-06 14:35:20,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:35:20,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 77 conjunts are in the unsatisfiable core [2022-04-06 14:35:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:20,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:22,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551914581] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:22,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:22,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 80 [2022-04-06 14:35:22,775 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1839808864] [2022-04-06 14:35:22,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1839808864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:22,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:22,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-04-06 14:35:22,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404629828] [2022-04-06 14:35:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:22,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-06 14:35:22,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-06 14:35:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1677, Invalid=4643, Unknown=0, NotChecked=0, Total=6320 [2022-04-06 14:35:22,777 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) [2022-04-06 14:35:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:23,889 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-04-06 14:35:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-06 14:35:23,889 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 [2022-04-06 14:35:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:23,889 INFO L225 Difference]: With dead ends: 55 [2022-04-06 14:35:23,889 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 14:35:23,890 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3347, Invalid=10459, Unknown=0, NotChecked=0, Total=13806 [2022-04-06 14:35:23,891 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:23,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:23,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 14:35:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-04-06 14:35:23,893 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) [2022-04-06 14:35:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-04-06 14:35:23,893 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2022-04-06 14:35:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:23,893 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-04-06 14:35:23,894 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) [2022-04-06 14:35:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-04-06 14:35:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 14:35:23,894 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:23,894 INFO L499 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:23,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:24,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:24,294 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 [2022-04-06 14:35:24,295 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 75 times [2022-04-06 14:35:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:24,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [245771328] [2022-04-06 14:35:24,328 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:24,328 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 319589943, now seen corresponding path program 1 times [2022-04-06 14:35:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:24,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365175779] [2022-04-06 14:35:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:24,330 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_38.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_38.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:24,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177838494] [2022-04-06 14:35:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:24,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:24,334 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) [2022-04-06 14:35:24,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-06 14:35:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:24,379 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:24,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 76 times [2022-04-06 14:35:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:24,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905373170] [2022-04-06 14:35:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:25,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905373170] [2022-04-06 14:35:25,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905373170] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:25,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590198383] [2022-04-06 14:35:25,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:35:25,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:25,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:25,057 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) [2022-04-06 14:35:25,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-06 14:35:25,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:35:25,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:25,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 79 conjunts are in the unsatisfiable core [2022-04-06 14:35:25,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:25,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:27,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590198383] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:27,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:27,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 82 [2022-04-06 14:35:27,338 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:27,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [245771328] [2022-04-06 14:35:27,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [245771328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:27,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:27,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-04-06 14:35:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728962324] [2022-04-06 14:35:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:27,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-06 14:35:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-06 14:35:27,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1760, Invalid=4882, Unknown=0, NotChecked=0, Total=6642 [2022-04-06 14:35:27,339 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) [2022-04-06 14:35:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:28,464 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-04-06 14:35:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-06 14:35:28,464 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 [2022-04-06 14:35:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:28,465 INFO L225 Difference]: With dead ends: 56 [2022-04-06 14:35:28,465 INFO L226 Difference]: Without dead ends: 51 [2022-04-06 14:35:28,466 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3513, Invalid=11007, Unknown=0, NotChecked=0, Total=14520 [2022-04-06 14:35:28,466 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:28,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-06 14:35:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-04-06 14:35:28,470 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) [2022-04-06 14:35:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-04-06 14:35:28,471 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2022-04-06 14:35:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:28,471 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-04-06 14:35:28,471 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) [2022-04-06 14:35:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-04-06 14:35:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 14:35:28,472 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:28,472 INFO L499 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:28,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:28,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:28,877 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 [2022-04-06 14:35:28,877 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 77 times [2022-04-06 14:35:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:28,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [483309594] [2022-04-06 14:35:28,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:28,912 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 378695287, now seen corresponding path program 1 times [2022-04-06 14:35:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:28,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810354367] [2022-04-06 14:35:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:28,915 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_39.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_39.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:35:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:28,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603725036] [2022-04-06 14:35:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:28,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:28,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:28,918 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) [2022-04-06 14:35:28,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-06 14:35:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:28,956 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:28,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 78 times [2022-04-06 14:35:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:28,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870128797] [2022-04-06 14:35:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:29,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:29,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870128797] [2022-04-06 14:35:29,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870128797] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:29,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095969026] [2022-04-06 14:35:29,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:35:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:29,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:29,711 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) [2022-04-06 14:35:29,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-06 14:35:34,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-04-06 14:35:34,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:34,220 WARN L261 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 87 conjunts are in the unsatisfiable core [2022-04-06 14:35:34,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:34,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:37,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095969026] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:37,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:37,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 45] total 87 [2022-04-06 14:35:37,625 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:37,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [483309594] [2022-04-06 14:35:37,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [483309594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:37,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:37,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-04-06 14:35:37,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557701865] [2022-04-06 14:35:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:37,628 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-04-06 14:35:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-04-06 14:35:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5591, Unknown=0, NotChecked=0, Total=7482 [2022-04-06 14:35:37,629 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) [2022-04-06 14:35:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:38,862 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-04-06 14:35:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-06 14:35:38,863 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 [2022-04-06 14:35:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:38,863 INFO L225 Difference]: With dead ends: 57 [2022-04-06 14:35:38,863 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 14:35:38,872 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3729, Invalid=12273, Unknown=0, NotChecked=0, Total=16002 [2022-04-06 14:35:38,873 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:38,873 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 14:35:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-04-06 14:35:38,875 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) [2022-04-06 14:35:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-04-06 14:35:38,876 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2022-04-06 14:35:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:38,876 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-04-06 14:35:38,876 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) [2022-04-06 14:35:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-04-06 14:35:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 14:35:38,876 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:38,876 INFO L499 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:38,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:39,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-04-06 14:35:39,280 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 [2022-04-06 14:35:39,280 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 79 times [2022-04-06 14:35:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:39,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1630849951] [2022-04-06 14:35:39,306 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:39,306 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash 437800631, now seen corresponding path program 1 times [2022-04-06 14:35:39,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:39,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069393609] [2022-04-06 14:35:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:39,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:39,309 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_40.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_40.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:35:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:39,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804056030] [2022-04-06 14:35:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:39,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:39,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:39,312 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) [2022-04-06 14:35:39,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-06 14:35:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:39,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:39,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 80 times [2022-04-06 14:35:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:39,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394403102] [2022-04-06 14:35:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:40,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:40,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394403102] [2022-04-06 14:35:40,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394403102] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:40,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011286361] [2022-04-06 14:35:40,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:35:40,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:40,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:40,093 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) [2022-04-06 14:35:40,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-06 14:35:40,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:35:40,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:40,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 83 conjunts are in the unsatisfiable core [2022-04-06 14:35:40,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:40,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:42,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011286361] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:42,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 86 [2022-04-06 14:35:42,576 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1630849951] [2022-04-06 14:35:42,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1630849951] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:42,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-04-06 14:35:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963510725] [2022-04-06 14:35:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:42,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-06 14:35:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-06 14:35:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1932, Invalid=5378, Unknown=0, NotChecked=0, Total=7310 [2022-04-06 14:35:42,578 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) [2022-04-06 14:35:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:43,837 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-04-06 14:35:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-06 14:35:43,843 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 [2022-04-06 14:35:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:43,845 INFO L225 Difference]: With dead ends: 58 [2022-04-06 14:35:43,845 INFO L226 Difference]: Without dead ends: 53 [2022-04-06 14:35:43,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3857, Invalid=12145, Unknown=0, NotChecked=0, Total=16002 [2022-04-06 14:35:43,849 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:43,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-06 14:35:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-04-06 14:35:43,852 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) [2022-04-06 14:35:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-04-06 14:35:43,853 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2022-04-06 14:35:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:43,853 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-04-06 14:35:43,853 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) [2022-04-06 14:35:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-04-06 14:35:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 14:35:43,853 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:43,853 INFO L499 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:44,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-04-06 14:35:44,257 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 [2022-04-06 14:35:44,263 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 81 times [2022-04-06 14:35:44,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:44,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [614271883] [2022-04-06 14:35:44,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:44,291 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash 496905975, now seen corresponding path program 1 times [2022-04-06 14:35:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:44,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212330349] [2022-04-06 14:35:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:44,294 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_41.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_41.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:44,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843266134] [2022-04-06 14:35:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:44,297 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) [2022-04-06 14:35:44,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-04-06 14:35:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:44,334 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:44,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 82 times [2022-04-06 14:35:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:44,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962774489] [2022-04-06 14:35:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:45,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962774489] [2022-04-06 14:35:45,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962774489] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:45,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065111652] [2022-04-06 14:35:45,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:35:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:45,103 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) [2022-04-06 14:35:45,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-04-06 14:35:45,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:35:45,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 85 conjunts are in the unsatisfiable core [2022-04-06 14:35:45,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:45,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065111652] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:47,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:47,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 88 [2022-04-06 14:35:47,768 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [614271883] [2022-04-06 14:35:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [614271883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:47,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:47,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-04-06 14:35:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358985596] [2022-04-06 14:35:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:47,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-06 14:35:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-06 14:35:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2021, Invalid=5635, Unknown=0, NotChecked=0, Total=7656 [2022-04-06 14:35:47,770 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) [2022-04-06 14:35:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:49,060 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-04-06 14:35:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-06 14:35:49,060 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 [2022-04-06 14:35:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:49,061 INFO L225 Difference]: With dead ends: 59 [2022-04-06 14:35:49,061 INFO L226 Difference]: Without dead ends: 54 [2022-04-06 14:35:49,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4035, Invalid=12735, Unknown=0, NotChecked=0, Total=16770 [2022-04-06 14:35:49,062 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:49,062 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-06 14:35:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-04-06 14:35:49,065 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) [2022-04-06 14:35:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-04-06 14:35:49,065 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2022-04-06 14:35:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:49,065 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-04-06 14:35:49,066 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) [2022-04-06 14:35:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-04-06 14:35:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 14:35:49,066 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:49,066 INFO L499 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:49,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:49,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-04-06 14:35:49,475 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 [2022-04-06 14:35:49,475 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 83 times [2022-04-06 14:35:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1569957733] [2022-04-06 14:35:49,500 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:49,501 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 556011319, now seen corresponding path program 1 times [2022-04-06 14:35:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055134634] [2022-04-06 14:35:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:49,503 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_42.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_42.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:49,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214107306] [2022-04-06 14:35:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:49,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:49,507 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) [2022-04-06 14:35:49,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-04-06 14:35:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:49,547 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:49,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 84 times [2022-04-06 14:35:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817742919] [2022-04-06 14:35:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817742919] [2022-04-06 14:35:50,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817742919] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855273057] [2022-04-06 14:35:50,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:35:50,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:50,344 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) [2022-04-06 14:35:50,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-04-06 14:35:53,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-04-06 14:35:53,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:53,361 WARN L261 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-06 14:35:53,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:53,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:35:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:56,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855273057] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:35:56,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:35:56,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 48] total 93 [2022-04-06 14:35:56,970 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:35:56,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1569957733] [2022-04-06 14:35:56,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1569957733] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:35:56,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:35:56,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-04-06 14:35:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031800174] [2022-04-06 14:35:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:35:56,970 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-06 14:35:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-06 14:35:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6395, Unknown=0, NotChecked=0, Total=8556 [2022-04-06 14:35:56,971 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) [2022-04-06 14:35:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:35:58,355 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-04-06 14:35:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-06 14:35:58,356 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 [2022-04-06 14:35:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:35:58,356 INFO L225 Difference]: With dead ends: 60 [2022-04-06 14:35:58,356 INFO L226 Difference]: Without dead ends: 55 [2022-04-06 14:35:58,357 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4266, Invalid=14094, Unknown=0, NotChecked=0, Total=18360 [2022-04-06 14:35:58,357 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:35:58,357 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 14:35:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-06 14:35:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-06 14:35:58,360 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) [2022-04-06 14:35:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-04-06 14:35:58,360 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2022-04-06 14:35:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:35:58,360 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-04-06 14:35:58,360 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) [2022-04-06 14:35:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-04-06 14:35:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 14:35:58,360 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:35:58,360 INFO L499 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:35:58,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-04-06 14:35:58,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-04-06 14:35:58,761 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 [2022-04-06 14:35:58,761 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:35:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:35:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 85 times [2022-04-06 14:35:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:35:58,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [601432879] [2022-04-06 14:35:58,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:35:58,785 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:35:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash 615116663, now seen corresponding path program 1 times [2022-04-06 14:35:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:58,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491367693] [2022-04-06 14:35:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:58,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:58,788 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_43.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_43.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:35:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:35:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422053062] [2022-04-06 14:35:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:58,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:58,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:58,792 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) [2022-04-06 14:35:58,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-04-06 14:35:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:58,827 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:35:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:35:58,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:35:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 86 times [2022-04-06 14:35:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:35:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873490690] [2022-04-06 14:35:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:35:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:35:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:35:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:35:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:59,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:35:59,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873490690] [2022-04-06 14:35:59,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873490690] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:35:59,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230520074] [2022-04-06 14:35:59,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:35:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:35:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:35:59,670 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) [2022-04-06 14:35:59,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-04-06 14:35:59,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:35:59,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:35:59,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 89 conjunts are in the unsatisfiable core [2022-04-06 14:35:59,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:35:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:35:59,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:02,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230520074] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:02,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:02,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 92 [2022-04-06 14:36:02,485 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [601432879] [2022-04-06 14:36:02,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [601432879] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:02,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:02,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-04-06 14:36:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37892852] [2022-04-06 14:36:02,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:02,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-06 14:36:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-06 14:36:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2205, Invalid=6167, Unknown=0, NotChecked=0, Total=8372 [2022-04-06 14:36:02,486 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) [2022-04-06 14:36:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:03,885 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-04-06 14:36:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-06 14:36:03,886 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 [2022-04-06 14:36:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:03,886 INFO L225 Difference]: With dead ends: 61 [2022-04-06 14:36:03,886 INFO L226 Difference]: Without dead ends: 56 [2022-04-06 14:36:03,887 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4403, Invalid=13957, Unknown=0, NotChecked=0, Total=18360 [2022-04-06 14:36:03,887 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:03,887 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 14:36:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-04-06 14:36:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-04-06 14:36:03,890 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) [2022-04-06 14:36:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-04-06 14:36:03,890 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2022-04-06 14:36:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:03,890 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-04-06 14:36:03,891 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) [2022-04-06 14:36:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-04-06 14:36:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 14:36:03,891 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:03,891 INFO L499 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:03,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-04-06 14:36:04,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-04-06 14:36:04,292 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 [2022-04-06 14:36:04,292 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 87 times [2022-04-06 14:36:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:04,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1512554809] [2022-04-06 14:36:04,324 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:04,324 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 674222007, now seen corresponding path program 1 times [2022-04-06 14:36:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329534952] [2022-04-06 14:36:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:04,326 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_44.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_44.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:36:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:04,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462265034] [2022-04-06 14:36:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:04,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:04,330 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) [2022-04-06 14:36:04,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-04-06 14:36:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:04,367 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:04,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 88 times [2022-04-06 14:36:04,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300447210] [2022-04-06 14:36:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300447210] [2022-04-06 14:36:05,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300447210] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173306563] [2022-04-06 14:36:05,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:36:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:05,206 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) [2022-04-06 14:36:05,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-04-06 14:36:05,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:36:05,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:05,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 91 conjunts are in the unsatisfiable core [2022-04-06 14:36:05,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:05,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:08,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173306563] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:08,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:08,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 94 [2022-04-06 14:36:08,282 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:08,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1512554809] [2022-04-06 14:36:08,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1512554809] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:08,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:08,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-04-06 14:36:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847744908] [2022-04-06 14:36:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:08,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-04-06 14:36:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-04-06 14:36:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2300, Invalid=6442, Unknown=0, NotChecked=0, Total=8742 [2022-04-06 14:36:08,283 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) [2022-04-06 14:36:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:09,755 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-04-06 14:36:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-06 14:36:09,755 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 [2022-04-06 14:36:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:09,755 INFO L225 Difference]: With dead ends: 62 [2022-04-06 14:36:09,755 INFO L226 Difference]: Without dead ends: 57 [2022-04-06 14:36:09,757 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4593, Invalid=14589, Unknown=0, NotChecked=0, Total=19182 [2022-04-06 14:36:09,759 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:09,759 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 14:36:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-06 14:36:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-04-06 14:36:09,762 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) [2022-04-06 14:36:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-04-06 14:36:09,762 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2022-04-06 14:36:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:09,763 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-04-06 14:36:09,763 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) [2022-04-06 14:36:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-04-06 14:36:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 14:36:09,763 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:09,763 INFO L499 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:09,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-04-06 14:36:09,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-04-06 14:36:10,171 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 [2022-04-06 14:36:10,171 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 89 times [2022-04-06 14:36:10,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [21123863] [2022-04-06 14:36:10,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:10,262 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash 733327351, now seen corresponding path program 1 times [2022-04-06 14:36:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458570600] [2022-04-06 14:36:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:10,265 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_45.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_45.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:36:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:10,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645606042] [2022-04-06 14:36:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:10,268 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) [2022-04-06 14:36:10,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-04-06 14:36:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:10,306 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:10,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 90 times [2022-04-06 14:36:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:10,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738038860] [2022-04-06 14:36:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:11,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738038860] [2022-04-06 14:36:11,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738038860] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:11,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327224702] [2022-04-06 14:36:11,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:36:11,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:11,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:11,235 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) [2022-04-06 14:36:11,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-04-06 14:36:17,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2022-04-06 14:36:17,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:17,558 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 94 conjunts are in the unsatisfiable core [2022-04-06 14:36:17,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:17,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327224702] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:31,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:31,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 96 [2022-04-06 14:36:31,142 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [21123863] [2022-04-06 14:36:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [21123863] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:31,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:31,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-04-06 14:36:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309886646] [2022-04-06 14:36:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:31,142 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-06 14:36:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-06 14:36:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2397, Invalid=6723, Unknown=0, NotChecked=0, Total=9120 [2022-04-06 14:36:31,143 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) [2022-04-06 14:36:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:32,722 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-04-06 14:36:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-06 14:36:32,723 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 [2022-04-06 14:36:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:32,723 INFO L225 Difference]: With dead ends: 63 [2022-04-06 14:36:32,723 INFO L226 Difference]: Without dead ends: 58 [2022-04-06 14:36:32,724 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=4787, Invalid=15235, Unknown=0, NotChecked=0, Total=20022 [2022-04-06 14:36:32,724 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:32,734 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 243 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 14:36:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-06 14:36:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-04-06 14:36:32,737 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) [2022-04-06 14:36:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-04-06 14:36:32,737 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2022-04-06 14:36:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:32,738 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-04-06 14:36:32,738 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) [2022-04-06 14:36:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-04-06 14:36:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 14:36:32,738 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:32,738 INFO L499 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:32,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-04-06 14:36:32,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-04-06 14:36:33,142 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 [2022-04-06 14:36:33,142 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 91 times [2022-04-06 14:36:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:33,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [191892746] [2022-04-06 14:36:33,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:33,175 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash 792432695, now seen corresponding path program 1 times [2022-04-06 14:36:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:33,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431686548] [2022-04-06 14:36:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:33,177 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_46.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_46.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:36:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:33,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053370300] [2022-04-06 14:36:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:33,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:33,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:33,184 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) [2022-04-06 14:36:33,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-04-06 14:36:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:33,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:33,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 92 times [2022-04-06 14:36:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:33,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946830228] [2022-04-06 14:36:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:33,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946830228] [2022-04-06 14:36:34,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946830228] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304476959] [2022-04-06 14:36:34,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:36:34,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:34,168 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) [2022-04-06 14:36:34,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-04-06 14:36:34,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:36:34,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:34,219 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-06 14:36:34,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:34,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:37,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304476959] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:37,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:37,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-04-06 14:36:37,388 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [191892746] [2022-04-06 14:36:37,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [191892746] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-04-06 14:36:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121460095] [2022-04-06 14:36:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:37,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-06 14:36:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-06 14:36:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-04-06 14:36:37,389 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) [2022-04-06 14:36:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:38,946 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-04-06 14:36:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-06 14:36:38,946 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 [2022-04-06 14:36:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:38,946 INFO L225 Difference]: With dead ends: 64 [2022-04-06 14:36:38,946 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 14:36:38,948 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4985, Invalid=15895, Unknown=0, NotChecked=0, Total=20880 [2022-04-06 14:36:38,948 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:38,949 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 14:36:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 14:36:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-04-06 14:36:38,951 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) [2022-04-06 14:36:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-04-06 14:36:38,951 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2022-04-06 14:36:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:38,952 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-04-06 14:36:38,952 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) [2022-04-06 14:36:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-04-06 14:36:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 14:36:38,952 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:38,952 INFO L499 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:38,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-04-06 14:36:39,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-04-06 14:36:39,352 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 [2022-04-06 14:36:39,353 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 93 times [2022-04-06 14:36:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1051203130] [2022-04-06 14:36:39,477 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:39,477 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 851538039, now seen corresponding path program 1 times [2022-04-06 14:36:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:39,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548268196] [2022-04-06 14:36:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:39,479 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_47.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_47.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:36:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795731050] [2022-04-06 14:36:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:39,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:39,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:39,483 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) [2022-04-06 14:36:39,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-04-06 14:36:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:39,540 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:39,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 94 times [2022-04-06 14:36:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780552022] [2022-04-06 14:36:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780552022] [2022-04-06 14:36:40,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780552022] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739008154] [2022-04-06 14:36:40,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:36:40,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:40,528 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) [2022-04-06 14:36:40,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-04-06 14:36:40,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:36:40,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:40,646 WARN L261 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 97 conjunts are in the unsatisfiable core [2022-04-06 14:36:40,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:40,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:43,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739008154] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:43,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:43,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 100 [2022-04-06 14:36:43,930 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:43,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1051203130] [2022-04-06 14:36:43,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1051203130] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:43,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:43,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-04-06 14:36:43,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785842261] [2022-04-06 14:36:43,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:43,930 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-06 14:36:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-06 14:36:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2597, Invalid=7303, Unknown=0, NotChecked=0, Total=9900 [2022-04-06 14:36:43,931 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) [2022-04-06 14:36:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:45,586 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-04-06 14:36:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-04-06 14:36:45,587 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 [2022-04-06 14:36:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:45,587 INFO L225 Difference]: With dead ends: 65 [2022-04-06 14:36:45,587 INFO L226 Difference]: Without dead ends: 60 [2022-04-06 14:36:45,590 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5187, Invalid=16569, Unknown=0, NotChecked=0, Total=21756 [2022-04-06 14:36:45,590 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:45,591 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 14:36:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-06 14:36:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-06 14:36:45,593 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) [2022-04-06 14:36:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-04-06 14:36:45,594 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2022-04-06 14:36:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:45,594 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-04-06 14:36:45,594 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) [2022-04-06 14:36:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-04-06 14:36:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 14:36:45,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:45,594 INFO L499 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:45,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-04-06 14:36:45,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-04-06 14:36:46,007 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 [2022-04-06 14:36:46,007 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 95 times [2022-04-06 14:36:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:46,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [664263385] [2022-04-06 14:36:46,034 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:46,034 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash 910643383, now seen corresponding path program 1 times [2022-04-06 14:36:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:46,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70307433] [2022-04-06 14:36:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:46,037 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_48.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_48.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:36:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:46,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774503648] [2022-04-06 14:36:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:46,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:46,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:46,047 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) [2022-04-06 14:36:46,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-04-06 14:36:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:46,089 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:46,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 96 times [2022-04-06 14:36:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:46,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014732243] [2022-04-06 14:36:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:47,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014732243] [2022-04-06 14:36:47,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014732243] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:47,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120125412] [2022-04-06 14:36:47,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:36:47,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:47,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:47,084 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) [2022-04-06 14:36:47,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-04-06 14:36:50,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-04-06 14:36:50,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:50,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 105 conjunts are in the unsatisfiable core [2022-04-06 14:36:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:51,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:36:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:55,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120125412] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:36:55,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:36:55,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 54] total 105 [2022-04-06 14:36:55,547 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:36:55,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [664263385] [2022-04-06 14:36:55,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [664263385] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:36:55,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:36:55,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-04-06 14:36:55,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313892166] [2022-04-06 14:36:55,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:36:55,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-04-06 14:36:55,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:55,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-04-06 14:36:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=8165, Unknown=0, NotChecked=0, Total=10920 [2022-04-06 14:36:55,548 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) [2022-04-06 14:36:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:36:57,369 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-04-06 14:36:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-06 14:36:57,369 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 [2022-04-06 14:36:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:36:57,369 INFO L225 Difference]: With dead ends: 66 [2022-04-06 14:36:57,369 INFO L226 Difference]: Without dead ends: 61 [2022-04-06 14:36:57,371 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5448, Invalid=18114, Unknown=0, NotChecked=0, Total=23562 [2022-04-06 14:36:57,371 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 14:36:57,371 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 158 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 14:36:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-04-06 14:36:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-04-06 14:36:57,374 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) [2022-04-06 14:36:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-04-06 14:36:57,374 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2022-04-06 14:36:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:36:57,375 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-04-06 14:36:57,375 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) [2022-04-06 14:36:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-04-06 14:36:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 14:36:57,375 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:36:57,375 INFO L499 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:36:57,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-04-06 14:36:57,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-04-06 14:36:57,775 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 [2022-04-06 14:36:57,776 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:36:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:36:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 97 times [2022-04-06 14:36:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:36:57,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2128393732] [2022-04-06 14:36:57,834 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:36:57,835 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:36:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash 969748727, now seen corresponding path program 1 times [2022-04-06 14:36:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105716391] [2022-04-06 14:36:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:57,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:57,837 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_49.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_49.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:36:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:36:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527367626] [2022-04-06 14:36:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:57,840 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) [2022-04-06 14:36:57,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-04-06 14:36:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:57,884 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:36:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:36:57,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:36:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 98 times [2022-04-06 14:36:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:36:57,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17736232] [2022-04-06 14:36:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:36:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:36:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:36:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:36:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:58,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:36:58,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17736232] [2022-04-06 14:36:58,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17736232] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:36:58,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100631559] [2022-04-06 14:36:58,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:36:58,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:36:58,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:36:58,921 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) [2022-04-06 14:36:58,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-04-06 14:36:59,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:36:59,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:36:59,019 WARN L261 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 101 conjunts are in the unsatisfiable core [2022-04-06 14:36:59,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:36:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:36:59,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:02,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100631559] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:02,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:02,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 104 [2022-04-06 14:37:02,499 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:02,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2128393732] [2022-04-06 14:37:02,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2128393732] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:02,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:02,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-04-06 14:37:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372469428] [2022-04-06 14:37:02,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:02,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-06 14:37:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-06 14:37:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2805, Invalid=7907, Unknown=0, NotChecked=0, Total=10712 [2022-04-06 14:37:02,501 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) [2022-04-06 14:37:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:04,236 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-04-06 14:37:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-04-06 14:37:04,236 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 [2022-04-06 14:37:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:04,237 INFO L225 Difference]: With dead ends: 67 [2022-04-06 14:37:04,237 INFO L226 Difference]: Without dead ends: 62 [2022-04-06 14:37:04,238 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5603, Invalid=17959, Unknown=0, NotChecked=0, Total=23562 [2022-04-06 14:37:04,239 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:04,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 14:37:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-04-06 14:37:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-04-06 14:37:04,241 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) [2022-04-06 14:37:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2022-04-06 14:37:04,242 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2022-04-06 14:37:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:04,242 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2022-04-06 14:37:04,242 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) [2022-04-06 14:37:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2022-04-06 14:37:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 14:37:04,242 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:04,242 INFO L499 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:04,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:04,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-04-06 14:37:04,643 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 [2022-04-06 14:37:04,643 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 99 times [2022-04-06 14:37:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [506929210] [2022-04-06 14:37:04,694 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:04,694 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1028854071, now seen corresponding path program 1 times [2022-04-06 14:37:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261967680] [2022-04-06 14:37:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:04,696 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_50.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_50.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:37:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:04,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380323871] [2022-04-06 14:37:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:04,700 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) [2022-04-06 14:37:04,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-04-06 14:37:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:04,737 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:04,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 100 times [2022-04-06 14:37:04,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:04,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841728262] [2022-04-06 14:37:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:04,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841728262] [2022-04-06 14:37:05,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841728262] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:05,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797696711] [2022-04-06 14:37:05,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:37:05,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:05,805 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) [2022-04-06 14:37:05,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-04-06 14:37:05,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:37:05,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:05,924 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 103 conjunts are in the unsatisfiable core [2022-04-06 14:37:05,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:06,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:09,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797696711] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:09,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:09,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 106 [2022-04-06 14:37:09,693 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:09,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [506929210] [2022-04-06 14:37:09,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [506929210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:09,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:09,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-04-06 14:37:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201637540] [2022-04-06 14:37:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:09,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-06 14:37:09,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-06 14:37:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2912, Invalid=8218, Unknown=0, NotChecked=0, Total=11130 [2022-04-06 14:37:09,695 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) [2022-04-06 14:37:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:11,556 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-04-06 14:37:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-04-06 14:37:11,557 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 [2022-04-06 14:37:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:11,557 INFO L225 Difference]: With dead ends: 68 [2022-04-06 14:37:11,557 INFO L226 Difference]: Without dead ends: 63 [2022-04-06 14:37:11,559 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5817, Invalid=18675, Unknown=0, NotChecked=0, Total=24492 [2022-04-06 14:37:11,559 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:11,559 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 14:37:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-06 14:37:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-04-06 14:37:11,563 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) [2022-04-06 14:37:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-04-06 14:37:11,563 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2022-04-06 14:37:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:11,563 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-04-06 14:37:11,563 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) [2022-04-06 14:37:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-04-06 14:37:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 14:37:11,564 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:11,564 INFO L499 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:11,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:11,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:11,980 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 [2022-04-06 14:37:11,980 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 101 times [2022-04-06 14:37:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1601337858] [2022-04-06 14:37:12,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:12,002 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:12,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1087959415, now seen corresponding path program 1 times [2022-04-06 14:37:12,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:12,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529824192] [2022-04-06 14:37:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:12,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:12,004 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_51.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_51.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:37:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:12,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093009405] [2022-04-06 14:37:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:12,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:12,008 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) [2022-04-06 14:37:12,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-04-06 14:37:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:12,045 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:12,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 102 times [2022-04-06 14:37:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66575731] [2022-04-06 14:37:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:12,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66575731] [2022-04-06 14:37:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66575731] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043268884] [2022-04-06 14:37:13,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:37:13,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:13,178 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) [2022-04-06 14:37:13,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-04-06 14:37:16,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-04-06 14:37:16,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:16,271 WARN L261 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 108 conjunts are in the unsatisfiable core [2022-04-06 14:37:16,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:16,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043268884] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:21,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:21,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 57] total 111 [2022-04-06 14:37:21,365 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1601337858] [2022-04-06 14:37:21,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1601337858] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:21,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:21,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-04-06 14:37:21,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192828758] [2022-04-06 14:37:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:21,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-04-06 14:37:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-04-06 14:37:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=9131, Unknown=0, NotChecked=0, Total=12210 [2022-04-06 14:37:21,366 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) [2022-04-06 14:37:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:23,316 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-04-06 14:37:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-06 14:37:23,316 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 [2022-04-06 14:37:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:23,317 INFO L225 Difference]: With dead ends: 69 [2022-04-06 14:37:23,317 INFO L226 Difference]: Without dead ends: 64 [2022-04-06 14:37:23,318 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=6093, Invalid=20313, Unknown=0, NotChecked=0, Total=26406 [2022-04-06 14:37:23,318 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:23,319 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 14:37:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-06 14:37:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-04-06 14:37:23,321 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) [2022-04-06 14:37:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-04-06 14:37:23,322 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2022-04-06 14:37:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:23,322 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-04-06 14:37:23,322 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) [2022-04-06 14:37:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-04-06 14:37:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 14:37:23,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:23,322 INFO L499 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:23,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:23,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-04-06 14:37:23,727 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 [2022-04-06 14:37:23,727 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 103 times [2022-04-06 14:37:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:23,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [471438898] [2022-04-06 14:37:23,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:23,751 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1147064759, now seen corresponding path program 1 times [2022-04-06 14:37:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:23,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021061832] [2022-04-06 14:37:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:23,753 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_52.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_52.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:37:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597741908] [2022-04-06 14:37:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:23,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:23,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:23,756 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) [2022-04-06 14:37:23,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-04-06 14:37:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:23,793 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:23,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 104 times [2022-04-06 14:37:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:23,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712085077] [2022-04-06 14:37:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:24,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712085077] [2022-04-06 14:37:24,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712085077] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:24,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385254521] [2022-04-06 14:37:24,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:37:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:24,932 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) [2022-04-06 14:37:24,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-04-06 14:37:25,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:37:25,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:25,032 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 107 conjunts are in the unsatisfiable core [2022-04-06 14:37:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:25,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:28,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385254521] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:28,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 110 [2022-04-06 14:37:28,960 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [471438898] [2022-04-06 14:37:28,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [471438898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:28,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-04-06 14:37:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146234892] [2022-04-06 14:37:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:28,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-06 14:37:28,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-06 14:37:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3132, Invalid=8858, Unknown=0, NotChecked=0, Total=11990 [2022-04-06 14:37:28,961 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) [2022-04-06 14:37:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:30,986 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-04-06 14:37:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-06 14:37:30,987 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 [2022-04-06 14:37:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:30,987 INFO L225 Difference]: With dead ends: 70 [2022-04-06 14:37:30,987 INFO L226 Difference]: Without dead ends: 65 [2022-04-06 14:37:30,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=6257, Invalid=20149, Unknown=0, NotChecked=0, Total=26406 [2022-04-06 14:37:30,989 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:30,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 253 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 14:37:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-06 14:37:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-04-06 14:37:30,993 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) [2022-04-06 14:37:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-04-06 14:37:30,993 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2022-04-06 14:37:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:30,993 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-04-06 14:37:30,993 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) [2022-04-06 14:37:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-04-06 14:37:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 14:37:30,993 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:30,994 INFO L499 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:30,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:31,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-04-06 14:37:31,397 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 [2022-04-06 14:37:31,398 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 105 times [2022-04-06 14:37:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:31,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1144479482] [2022-04-06 14:37:31,423 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:31,423 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1206170103, now seen corresponding path program 1 times [2022-04-06 14:37:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414177964] [2022-04-06 14:37:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:31,425 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_53.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_53.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:37:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185668569] [2022-04-06 14:37:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:31,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:31,434 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) [2022-04-06 14:37:31,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-04-06 14:37:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:31,469 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:31,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 106 times [2022-04-06 14:37:31,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:31,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561055218] [2022-04-06 14:37:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:31,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561055218] [2022-04-06 14:37:32,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561055218] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713614457] [2022-04-06 14:37:32,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:37:32,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:32,638 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) [2022-04-06 14:37:32,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-04-06 14:37:32,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:37:32,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:32,757 WARN L261 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjunts are in the unsatisfiable core [2022-04-06 14:37:32,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:32,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:36,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713614457] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:36,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 112 [2022-04-06 14:37:36,863 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1144479482] [2022-04-06 14:37:36,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1144479482] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:36,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-04-06 14:37:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604175644] [2022-04-06 14:37:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:36,864 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-06 14:37:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-06 14:37:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3245, Invalid=9187, Unknown=0, NotChecked=0, Total=12432 [2022-04-06 14:37:36,865 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) [2022-04-06 14:37:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:38,919 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-04-06 14:37:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-06 14:37:38,919 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 [2022-04-06 14:37:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:38,919 INFO L225 Difference]: With dead ends: 71 [2022-04-06 14:37:38,920 INFO L226 Difference]: Without dead ends: 66 [2022-04-06 14:37:38,921 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6483, Invalid=20907, Unknown=0, NotChecked=0, Total=27390 [2022-04-06 14:37:38,921 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:38,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 14:37:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-04-06 14:37:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-04-06 14:37:38,924 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) [2022-04-06 14:37:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2022-04-06 14:37:38,924 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2022-04-06 14:37:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:38,924 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2022-04-06 14:37:38,924 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) [2022-04-06 14:37:38,925 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2022-04-06 14:37:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 14:37:38,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:38,925 INFO L499 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:38,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-04-06 14:37:39,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:39,326 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 [2022-04-06 14:37:39,326 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 107 times [2022-04-06 14:37:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:39,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1603771433] [2022-04-06 14:37:39,349 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:39,350 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1265275447, now seen corresponding path program 1 times [2022-04-06 14:37:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:39,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541063826] [2022-04-06 14:37:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:39,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:39,352 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_54.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_54.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:37:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:39,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487547908] [2022-04-06 14:37:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:39,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:39,355 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) [2022-04-06 14:37:39,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-04-06 14:37:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:39,394 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:39,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 108 times [2022-04-06 14:37:39,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:39,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916242546] [2022-04-06 14:37:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916242546] [2022-04-06 14:37:40,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916242546] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135778130] [2022-04-06 14:37:40,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:37:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:40,634 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) [2022-04-06 14:37:40,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-04-06 14:37:46,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-04-06 14:37:46,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:46,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 117 conjunts are in the unsatisfiable core [2022-04-06 14:37:46,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:46,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:37:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:52,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135778130] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:37:52,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:37:52,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 60] total 117 [2022-04-06 14:37:52,049 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:37:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1603771433] [2022-04-06 14:37:52,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1603771433] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:37:52,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:37:52,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-04-06 14:37:52,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363266486] [2022-04-06 14:37:52,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:37:52,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-04-06 14:37:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-04-06 14:37:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=10151, Unknown=0, NotChecked=0, Total=13572 [2022-04-06 14:37:52,050 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) [2022-04-06 14:37:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:37:54,201 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-04-06 14:37:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-04-06 14:37:54,202 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 [2022-04-06 14:37:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:37:54,202 INFO L225 Difference]: With dead ends: 72 [2022-04-06 14:37:54,202 INFO L226 Difference]: Without dead ends: 67 [2022-04-06 14:37:54,204 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=6774, Invalid=22638, Unknown=0, NotChecked=0, Total=29412 [2022-04-06 14:37:54,204 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 14:37:54,204 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 14:37:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-06 14:37:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-04-06 14:37:54,207 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) [2022-04-06 14:37:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-04-06 14:37:54,207 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2022-04-06 14:37:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:37:54,207 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-04-06 14:37:54,208 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) [2022-04-06 14:37:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-04-06 14:37:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 14:37:54,208 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:37:54,208 INFO L499 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:37:54,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-04-06 14:37:54,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-04-06 14:37:54,608 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 [2022-04-06 14:37:54,609 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:37:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:37:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 109 times [2022-04-06 14:37:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:37:54,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1808704005] [2022-04-06 14:37:54,633 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:37:54,633 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:37:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1324380791, now seen corresponding path program 1 times [2022-04-06 14:37:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:54,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875650894] [2022-04-06 14:37:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:54,635 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_55.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_55.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:37:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:37:54,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007889334] [2022-04-06 14:37:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:54,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:54,639 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) [2022-04-06 14:37:54,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-04-06 14:37:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:54,676 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:37:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:37:54,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:37:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 110 times [2022-04-06 14:37:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:37:54,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275915779] [2022-04-06 14:37:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:37:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:37:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:37:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:37:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:37:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275915779] [2022-04-06 14:37:55,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275915779] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:37:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004139128] [2022-04-06 14:37:55,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:37:55,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:37:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:37:55,930 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) [2022-04-06 14:37:55,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-04-06 14:37:55,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:37:55,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:37:55,984 WARN L261 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 113 conjunts are in the unsatisfiable core [2022-04-06 14:37:55,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:37:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:37:56,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:38:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:00,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004139128] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:38:00,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:38:00,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 116 [2022-04-06 14:38:00,379 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:38:00,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1808704005] [2022-04-06 14:38:00,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1808704005] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:38:00,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:38:00,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-04-06 14:38:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040956544] [2022-04-06 14:38:00,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:38:00,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-06 14:38:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-06 14:38:00,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3477, Invalid=9863, Unknown=0, NotChecked=0, Total=13340 [2022-04-06 14:38:00,381 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) [2022-04-06 14:38:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:38:02,557 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-04-06 14:38:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-04-06 14:38:02,561 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 [2022-04-06 14:38:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:38:02,562 INFO L225 Difference]: With dead ends: 73 [2022-04-06 14:38:02,562 INFO L226 Difference]: Without dead ends: 68 [2022-04-06 14:38:02,563 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=6947, Invalid=22465, Unknown=0, NotChecked=0, Total=29412 [2022-04-06 14:38:02,564 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 14:38:02,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 14:38:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-04-06 14:38:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-04-06 14:38:02,567 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) [2022-04-06 14:38:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2022-04-06 14:38:02,567 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2022-04-06 14:38:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:38:02,568 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2022-04-06 14:38:02,568 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) [2022-04-06 14:38:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2022-04-06 14:38:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 14:38:02,568 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:38:02,568 INFO L499 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:38:02,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-04-06 14:38:02,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-04-06 14:38:02,983 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 [2022-04-06 14:38:02,983 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:38:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:38:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 111 times [2022-04-06 14:38:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:02,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1322925118] [2022-04-06 14:38:03,009 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:38:03,010 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:38:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1383486135, now seen corresponding path program 1 times [2022-04-06 14:38:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:03,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917418364] [2022-04-06 14:38:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:03,012 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_56.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_56.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:38:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:38:03,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648704475] [2022-04-06 14:38:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:03,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:03,015 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) [2022-04-06 14:38:03,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-04-06 14:38:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:03,051 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:38:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:03,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:38:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 112 times [2022-04-06 14:38:03,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:03,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871292965] [2022-04-06 14:38:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:38:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:38:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871292965] [2022-04-06 14:38:04,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871292965] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:38:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757556691] [2022-04-06 14:38:04,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:38:04,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:04,333 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) [2022-04-06 14:38:04,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-04-06 14:38:04,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:38:04,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:38:04,445 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 115 conjunts are in the unsatisfiable core [2022-04-06 14:38:04,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:38:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:04,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:38:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:09,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757556691] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:38:09,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:38:09,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 118 [2022-04-06 14:38:09,024 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:38:09,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1322925118] [2022-04-06 14:38:09,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1322925118] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:38:09,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:38:09,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-04-06 14:38:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814024890] [2022-04-06 14:38:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:38:09,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-04-06 14:38:09,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-04-06 14:38:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3596, Invalid=10210, Unknown=0, NotChecked=0, Total=13806 [2022-04-06 14:38:09,026 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) [2022-04-06 14:38:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:38:11,337 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-04-06 14:38:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-06 14:38:11,338 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 [2022-04-06 14:38:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:38:11,338 INFO L225 Difference]: With dead ends: 74 [2022-04-06 14:38:11,338 INFO L226 Difference]: Without dead ends: 69 [2022-04-06 14:38:11,340 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7185, Invalid=23265, Unknown=0, NotChecked=0, Total=30450 [2022-04-06 14:38:11,340 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:38:11,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 14:38:11,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-04-06 14:38:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-04-06 14:38:11,343 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) [2022-04-06 14:38:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-04-06 14:38:11,344 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2022-04-06 14:38:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:38:11,344 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-04-06 14:38:11,344 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) [2022-04-06 14:38:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-04-06 14:38:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 14:38:11,344 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:38:11,344 INFO L499 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:38:11,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-04-06 14:38:11,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-04-06 14:38:11,762 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 [2022-04-06 14:38:11,762 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:38:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:38:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 113 times [2022-04-06 14:38:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [189749903] [2022-04-06 14:38:11,791 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:38:11,791 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:38:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1442591479, now seen corresponding path program 1 times [2022-04-06 14:38:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:11,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605897340] [2022-04-06 14:38:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:11,794 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_57.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_57.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:38:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:38:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316518320] [2022-04-06 14:38:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:11,797 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) [2022-04-06 14:38:11,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-04-06 14:38:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:11,833 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:38:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:11,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:38:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 114 times [2022-04-06 14:38:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:11,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709477333] [2022-04-06 14:38:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:11,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:38:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:13,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:38:13,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709477333] [2022-04-06 14:38:13,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709477333] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:38:13,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509343284] [2022-04-06 14:38:13,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:38:13,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:13,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:13,152 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) [2022-04-06 14:38:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-04-06 14:38:18,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2022-04-06 14:38:18,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:38:18,754 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 117 conjunts are in the unsatisfiable core [2022-04-06 14:38:18,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:38:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:18,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:38:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:23,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509343284] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:38:23,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:38:23,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 120 [2022-04-06 14:38:23,478 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:38:23,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [189749903] [2022-04-06 14:38:23,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [189749903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:38:23,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:38:23,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-04-06 14:38:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257870970] [2022-04-06 14:38:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:38:23,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-06 14:38:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-06 14:38:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3717, Invalid=10563, Unknown=0, NotChecked=0, Total=14280 [2022-04-06 14:38:23,480 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) [2022-04-06 14:38:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:38:25,845 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-04-06 14:38:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-04-06 14:38:25,845 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 [2022-04-06 14:38:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:38:25,845 INFO L225 Difference]: With dead ends: 75 [2022-04-06 14:38:25,845 INFO L226 Difference]: Without dead ends: 70 [2022-04-06 14:38:25,847 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=7427, Invalid=24079, Unknown=0, NotChecked=0, Total=31506 [2022-04-06 14:38:25,847 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:38:25,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 188 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 14:38:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-06 14:38:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-04-06 14:38:25,850 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) [2022-04-06 14:38:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2022-04-06 14:38:25,851 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2022-04-06 14:38:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:38:25,851 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2022-04-06 14:38:25,851 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) [2022-04-06 14:38:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2022-04-06 14:38:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 14:38:25,851 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:38:25,851 INFO L499 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:38:25,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-04-06 14:38:26,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-04-06 14:38:26,257 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 [2022-04-06 14:38:26,257 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:38:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:38:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 115 times [2022-04-06 14:38:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:26,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [843797407] [2022-04-06 14:38:26,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:38:26,280 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:38:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1501696823, now seen corresponding path program 1 times [2022-04-06 14:38:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108735196] [2022-04-06 14:38:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:26,282 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_58.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_58.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:38:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:38:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205623806] [2022-04-06 14:38:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:26,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:26,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:26,285 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) [2022-04-06 14:38:26,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-04-06 14:38:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:26,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:38:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:26,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:38:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 116 times [2022-04-06 14:38:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:26,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663751768] [2022-04-06 14:38:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:26,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:38:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:27,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:38:27,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663751768] [2022-04-06 14:38:27,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663751768] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:38:27,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119404750] [2022-04-06 14:38:27,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:38:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:27,725 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) [2022-04-06 14:38:27,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-04-06 14:38:27,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:38:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:38:27,784 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 119 conjunts are in the unsatisfiable core [2022-04-06 14:38:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:38:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:28,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:38:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:32,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119404750] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:38:32,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:38:32,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 122 [2022-04-06 14:38:32,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:38:32,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [843797407] [2022-04-06 14:38:32,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [843797407] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:38:32,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:38:32,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-04-06 14:38:32,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200984387] [2022-04-06 14:38:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:38:32,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-04-06 14:38:32,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-04-06 14:38:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3840, Invalid=10922, Unknown=0, NotChecked=0, Total=14762 [2022-04-06 14:38:32,620 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) [2022-04-06 14:38:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:38:34,972 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-04-06 14:38:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-04-06 14:38:34,972 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 [2022-04-06 14:38:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:38:34,972 INFO L225 Difference]: With dead ends: 76 [2022-04-06 14:38:34,972 INFO L226 Difference]: Without dead ends: 71 [2022-04-06 14:38:34,974 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7673, Invalid=24907, Unknown=0, NotChecked=0, Total=32580 [2022-04-06 14:38:34,974 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:38:34,974 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 14:38:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-04-06 14:38:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-04-06 14:38:34,977 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) [2022-04-06 14:38:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-04-06 14:38:34,978 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2022-04-06 14:38:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:38:34,978 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-04-06 14:38:34,978 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) [2022-04-06 14:38:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-04-06 14:38:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 14:38:34,978 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:38:34,978 INFO L499 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:38:34,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-04-06 14:38:35,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-04-06 14:38:35,379 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 [2022-04-06 14:38:35,379 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:38:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:38:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 117 times [2022-04-06 14:38:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:35,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1451532447] [2022-04-06 14:38:35,405 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:38:35,405 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:38:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1560802167, now seen corresponding path program 1 times [2022-04-06 14:38:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:35,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694074082] [2022-04-06 14:38:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:35,407 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_59.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_59.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:38:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:38:35,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020346681] [2022-04-06 14:38:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:35,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:35,410 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) [2022-04-06 14:38:35,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-04-06 14:38:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:35,448 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:38:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:35,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:38:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 118 times [2022-04-06 14:38:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:35,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047258112] [2022-04-06 14:38:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:38:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:38:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047258112] [2022-04-06 14:38:36,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047258112] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:38:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106928129] [2022-04-06 14:38:36,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:38:36,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:36,862 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) [2022-04-06 14:38:36,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-04-06 14:38:36,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:38:36,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:38:36,953 WARN L261 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 121 conjunts are in the unsatisfiable core [2022-04-06 14:38:36,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:38:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:37,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:38:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:42,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106928129] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:38:42,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:38:42,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 124 [2022-04-06 14:38:42,006 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:38:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1451532447] [2022-04-06 14:38:42,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1451532447] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:38:42,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:38:42,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-04-06 14:38:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357342170] [2022-04-06 14:38:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:38:42,006 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-04-06 14:38:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-04-06 14:38:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3965, Invalid=11287, Unknown=0, NotChecked=0, Total=15252 [2022-04-06 14:38:42,007 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) [2022-04-06 14:38:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:38:44,501 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-04-06 14:38:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-04-06 14:38:44,502 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 [2022-04-06 14:38:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:38:44,505 INFO L225 Difference]: With dead ends: 77 [2022-04-06 14:38:44,505 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 14:38:44,506 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=7923, Invalid=25749, Unknown=0, NotChecked=0, Total=33672 [2022-04-06 14:38:44,506 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:38:44,507 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 218 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 14:38:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 14:38:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-04-06 14:38:44,510 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) [2022-04-06 14:38:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-04-06 14:38:44,511 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2022-04-06 14:38:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:38:44,511 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-04-06 14:38:44,511 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) [2022-04-06 14:38:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-04-06 14:38:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 14:38:44,512 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:38:44,512 INFO L499 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:38:44,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-04-06 14:38:44,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-04-06 14:38:44,912 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 [2022-04-06 14:38:44,912 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:38:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:38:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 119 times [2022-04-06 14:38:44,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:38:44,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1262070155] [2022-04-06 14:38:44,941 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:38:44,942 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:38:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1619907511, now seen corresponding path program 1 times [2022-04-06 14:38:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:44,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277674107] [2022-04-06 14:38:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:44,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:44,944 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_60.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_60.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:38:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:38:44,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124126218] [2022-04-06 14:38:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:44,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:44,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:44,947 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) [2022-04-06 14:38:44,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-04-06 14:38:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:44,983 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:38:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:38:44,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:38:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 120 times [2022-04-06 14:38:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:38:44,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328349707] [2022-04-06 14:38:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:38:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:38:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:38:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:38:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:38:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:38:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328349707] [2022-04-06 14:38:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328349707] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:38:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441471120] [2022-04-06 14:38:46,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:38:46,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:38:46,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:38:46,433 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) [2022-04-06 14:38:46,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-04-06 14:39:14,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-04-06 14:39:14,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:39:14,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 129 conjunts are in the unsatisfiable core [2022-04-06 14:39:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:39:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:14,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:39:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:21,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441471120] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:39:21,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:39:21,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 66] total 129 [2022-04-06 14:39:21,384 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:39:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1262070155] [2022-04-06 14:39:21,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1262070155] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:39:21,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:39:21,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-04-06 14:39:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163322839] [2022-04-06 14:39:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:39:21,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-04-06 14:39:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-04-06 14:39:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12353, Unknown=0, NotChecked=0, Total=16512 [2022-04-06 14:39:21,386 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:39:24,051 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-04-06 14:39:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-06 14:39:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-04-06 14:39:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:39:24,052 INFO L225 Difference]: With dead ends: 78 [2022-04-06 14:39:24,052 INFO L226 Difference]: Without dead ends: 73 [2022-04-06 14:39:24,053 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=8244, Invalid=27666, Unknown=0, NotChecked=0, Total=35910 [2022-04-06 14:39:24,054 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 3967 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 4090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:39:24,054 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 318 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3967 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 14:39:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-06 14:39:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-04-06 14:39:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-04-06 14:39:24,057 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2022-04-06 14:39:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:39:24,057 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-04-06 14:39:24,057 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-04-06 14:39:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 14:39:24,058 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:39:24,058 INFO L499 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:39:24,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-04-06 14:39:24,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-04-06 14:39:24,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:24,459 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:39:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:39:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 791963894, now seen corresponding path program 121 times [2022-04-06 14:39:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:24,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [791703772] [2022-04-06 14:39:24,498 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:39:24,498 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:39:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1679012855, now seen corresponding path program 1 times [2022-04-06 14:39:24,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:24,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31561149] [2022-04-06 14:39:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:24,501 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_61.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_61.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:39:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:39:24,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298644953] [2022-04-06 14:39:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:24,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:24,504 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:24,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-04-06 14:39:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:24,548 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:39:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:24,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:39:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash 791963894, now seen corresponding path program 122 times [2022-04-06 14:39:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:24,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471394411] [2022-04-06 14:39:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:24,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:39:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:39:26,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471394411] [2022-04-06 14:39:26,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471394411] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:39:26,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870396429] [2022-04-06 14:39:26,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:39:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:26,018 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:26,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-04-06 14:39:26,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:39:26,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:39:26,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 125 conjunts are in the unsatisfiable core [2022-04-06 14:39:26,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:39:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:26,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:39:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870396429] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:39:31,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:39:31,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 128 [2022-04-06 14:39:31,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:39:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [791703772] [2022-04-06 14:39:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [791703772] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:39:31,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:39:31,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-04-06 14:39:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879626993] [2022-04-06 14:39:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:39:31,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-06 14:39:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-06 14:39:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4221, Invalid=12035, Unknown=0, NotChecked=0, Total=16256 [2022-04-06 14:39:31,334 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:39:34,063 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-04-06 14:39:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-06 14:39:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-04-06 14:39:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:39:34,064 INFO L225 Difference]: With dead ends: 79 [2022-04-06 14:39:34,064 INFO L226 Difference]: Without dead ends: 74 [2022-04-06 14:39:34,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8435, Invalid=27475, Unknown=0, NotChecked=0, Total=35910 [2022-04-06 14:39:34,065 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 4179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:39:34,066 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 283 Invalid, 4179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 14:39:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-06 14:39:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-06 14:39:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-04-06 14:39:34,069 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2022-04-06 14:39:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:39:34,070 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-04-06 14:39:34,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-04-06 14:39:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 14:39:34,070 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:39:34,070 INFO L499 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:39:34,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-04-06 14:39:34,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-04-06 14:39:34,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122,SelfDestructingSolverStorable123,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:34,474 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:39:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:39:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1182461796, now seen corresponding path program 123 times [2022-04-06 14:39:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:34,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [37221341] [2022-04-06 14:39:34,500 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:39:34,501 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:39:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1738118199, now seen corresponding path program 1 times [2022-04-06 14:39:34,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:34,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347490800] [2022-04-06 14:39:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:34,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:34,503 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_62.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_62.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:39:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:39:34,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988429284] [2022-04-06 14:39:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:34,506 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:34,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-04-06 14:39:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:34,543 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:39:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:34,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:39:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1182461796, now seen corresponding path program 124 times [2022-04-06 14:39:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:34,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194758254] [2022-04-06 14:39:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:39:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:39:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194758254] [2022-04-06 14:39:36,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194758254] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:39:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568723711] [2022-04-06 14:39:36,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:39:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:36,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:36,070 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:36,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-04-06 14:39:36,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:39:36,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:39:36,161 WARN L261 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 127 conjunts are in the unsatisfiable core [2022-04-06 14:39:36,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:39:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:36,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:39:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568723711] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:39:41,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:39:41,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 130 [2022-04-06 14:39:41,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:39:41,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [37221341] [2022-04-06 14:39:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [37221341] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:39:41,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:39:41,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-04-06 14:39:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206733943] [2022-04-06 14:39:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:39:41,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-06 14:39:41,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-06 14:39:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4352, Invalid=12418, Unknown=0, NotChecked=0, Total=16770 [2022-04-06 14:39:41,650 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:39:44,327 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-04-06 14:39:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-04-06 14:39:44,329 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-04-06 14:39:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:39:44,330 INFO L225 Difference]: With dead ends: 80 [2022-04-06 14:39:44,330 INFO L226 Difference]: Without dead ends: 75 [2022-04-06 14:39:44,331 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=8697, Invalid=28359, Unknown=0, NotChecked=0, Total=37056 [2022-04-06 14:39:44,332 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:39:44,338 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 4060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 14:39:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-04-06 14:39:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-04-06 14:39:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-04-06 14:39:44,343 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2022-04-06 14:39:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:39:44,343 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-04-06 14:39:44,343 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:39:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-04-06 14:39:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 14:39:44,343 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:39:44,343 INFO L499 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:39:44,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-04-06 14:39:44,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-04-06 14:39:44,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124,SelfDestructingSolverStorable125 [2022-04-06 14:39:44,759 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:39:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:39:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2034851254, now seen corresponding path program 125 times [2022-04-06 14:39:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:39:44,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [36927751] [2022-04-06 14:39:44,778 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:39:44,779 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:39:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1797223543, now seen corresponding path program 1 times [2022-04-06 14:39:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:44,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949334868] [2022-04-06 14:39:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:44,781 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_63.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_63.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:39:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:39:44,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515696541] [2022-04-06 14:39:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:44,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:44,784 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:44,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-04-06 14:39:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:44,827 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:39:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:39:44,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:39:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2034851254, now seen corresponding path program 126 times [2022-04-06 14:39:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:39:44,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912946333] [2022-04-06 14:39:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:39:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:39:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:39:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:39:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:39:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:39:46,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912946333] [2022-04-06 14:39:46,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912946333] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:39:46,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242533116] [2022-04-06 14:39:46,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:39:46,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:39:46,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:39:46,386 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:39:46,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-04-06 14:40:10,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-04-06 14:40:10,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:40:10,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 135 conjunts are in the unsatisfiable core [2022-04-06 14:40:10,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:40:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:10,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:40:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:17,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242533116] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:40:17,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:40:17,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 69] total 135 [2022-04-06 14:40:17,881 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:40:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [36927751] [2022-04-06 14:40:17,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [36927751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:40:17,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:40:17,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-04-06 14:40:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159191805] [2022-04-06 14:40:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:40:17,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-04-06 14:40:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-04-06 14:40:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13535, Unknown=0, NotChecked=0, Total=18090 [2022-04-06 14:40:17,883 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:40:20,744 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-04-06 14:40:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-04-06 14:40:20,744 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-04-06 14:40:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:40:20,744 INFO L225 Difference]: With dead ends: 81 [2022-04-06 14:40:20,744 INFO L226 Difference]: Without dead ends: 76 [2022-04-06 14:40:20,746 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=9033, Invalid=30369, Unknown=0, NotChecked=0, Total=39402 [2022-04-06 14:40:20,746 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 4388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 4259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:40:20,746 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 238 Invalid, 4388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 4259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 14:40:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-06 14:40:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-04-06 14:40:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-04-06 14:40:20,750 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2022-04-06 14:40:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:40:20,750 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-04-06 14:40:20,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-04-06 14:40:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 14:40:20,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:40:20,751 INFO L499 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:40:20,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-04-06 14:40:20,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-04-06 14:40:21,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126,SelfDestructingSolverStorable127,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:21,155 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:40:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:40:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1307659300, now seen corresponding path program 127 times [2022-04-06 14:40:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:21,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [458011378] [2022-04-06 14:40:23,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:40:23,216 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:40:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1856328887, now seen corresponding path program 1 times [2022-04-06 14:40:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772074862] [2022-04-06 14:40:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:23,218 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_64.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_64.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:40:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:40:23,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627420645] [2022-04-06 14:40:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:23,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:23,223 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:23,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-04-06 14:40:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:23,313 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:40:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:23,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:40:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1307659300, now seen corresponding path program 128 times [2022-04-06 14:40:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:23,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768010692] [2022-04-06 14:40:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:40:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:24,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:40:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768010692] [2022-04-06 14:40:24,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768010692] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:40:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656220225] [2022-04-06 14:40:24,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:40:24,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:24,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:24,956 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:24,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-04-06 14:40:25,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:40:25,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:40:25,094 WARN L261 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 131 conjunts are in the unsatisfiable core [2022-04-06 14:40:25,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:40:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:25,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:40:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656220225] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:40:30,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:40:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 134 [2022-04-06 14:40:30,899 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:40:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [458011378] [2022-04-06 14:40:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [458011378] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:40:30,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:40:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-04-06 14:40:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515082098] [2022-04-06 14:40:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:40:30,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-04-06 14:40:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-04-06 14:40:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4620, Invalid=13202, Unknown=0, NotChecked=0, Total=17822 [2022-04-06 14:40:30,901 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:40:33,801 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-04-06 14:40:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-04-06 14:40:33,801 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-04-06 14:40:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:40:33,801 INFO L225 Difference]: With dead ends: 82 [2022-04-06 14:40:33,802 INFO L226 Difference]: Without dead ends: 77 [2022-04-06 14:40:33,803 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=9233, Invalid=30169, Unknown=0, NotChecked=0, Total=39402 [2022-04-06 14:40:33,804 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:40:33,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 14:40:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-06 14:40:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-04-06 14:40:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-04-06 14:40:33,807 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2022-04-06 14:40:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:40:33,807 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-04-06 14:40:33,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-04-06 14:40:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-06 14:40:33,808 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:40:33,808 INFO L499 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:40:33,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-04-06 14:40:34,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-04-06 14:40:34,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128,SelfDestructingSolverStorable129,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:34,211 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:40:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:40:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1846271370, now seen corresponding path program 129 times [2022-04-06 14:40:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [696781560] [2022-04-06 14:40:34,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:40:34,256 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:40:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1915434231, now seen corresponding path program 1 times [2022-04-06 14:40:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:34,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007400262] [2022-04-06 14:40:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:34,258 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_65.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_65.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:40:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:40:34,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879286558] [2022-04-06 14:40:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:34,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:34,261 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:34,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-04-06 14:40:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:34,302 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:40:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:34,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:40:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1846271370, now seen corresponding path program 130 times [2022-04-06 14:40:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:34,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459274816] [2022-04-06 14:40:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:40:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:40:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459274816] [2022-04-06 14:40:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459274816] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:40:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692644610] [2022-04-06 14:40:36,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:40:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:36,009 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:36,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-04-06 14:40:36,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:40:36,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:40:36,430 WARN L261 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 133 conjunts are in the unsatisfiable core [2022-04-06 14:40:36,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:40:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:36,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:40:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692644610] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:40:42,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:40:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 136 [2022-04-06 14:40:42,444 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:40:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [696781560] [2022-04-06 14:40:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [696781560] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:40:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:40:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-04-06 14:40:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078964794] [2022-04-06 14:40:42,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:40:42,445 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-04-06 14:40:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-04-06 14:40:42,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=13603, Unknown=0, NotChecked=0, Total=18360 [2022-04-06 14:40:42,446 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:40:45,400 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-04-06 14:40:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-04-06 14:40:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-04-06 14:40:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:40:45,401 INFO L225 Difference]: With dead ends: 83 [2022-04-06 14:40:45,401 INFO L226 Difference]: Without dead ends: 78 [2022-04-06 14:40:45,403 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=9507, Invalid=31095, Unknown=0, NotChecked=0, Total=40602 [2022-04-06 14:40:45,403 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 4515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 14:40:45,403 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 4515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 14:40:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-04-06 14:40:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-04-06 14:40:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-04-06 14:40:45,406 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2022-04-06 14:40:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:40:45,407 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-04-06 14:40:45,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:40:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-04-06 14:40:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 14:40:45,407 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:40:45,407 INFO L499 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:40:45,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-04-06 14:40:45,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-04-06 14:40:45,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130,SelfDestructingSolverStorable131,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:45,823 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:40:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:40:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1363376356, now seen corresponding path program 131 times [2022-04-06 14:40:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:40:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1283332268] [2022-04-06 14:40:45,846 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:40:45,846 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:40:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1974539575, now seen corresponding path program 1 times [2022-04-06 14:40:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695500719] [2022-04-06 14:40:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:45,849 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_66.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_66.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-04-06 14:40:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:40:45,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961600793] [2022-04-06 14:40:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:45,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:45,852 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:45,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-04-06 14:40:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:45,887 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:40:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:40:45,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:40:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1363376356, now seen corresponding path program 132 times [2022-04-06 14:40:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:40:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600545871] [2022-04-06 14:40:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:40:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:40:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:40:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:40:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:40:47,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:40:47,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600545871] [2022-04-06 14:40:47,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600545871] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:40:47,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206268116] [2022-04-06 14:40:47,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:40:47,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:40:47,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:40:47,600 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:40:47,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-04-06 14:41:46,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-04-06 14:41:46,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:41:46,683 WARN L261 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 141 conjunts are in the unsatisfiable core [2022-04-06 14:41:46,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:41:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:41:46,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:41:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:41:54,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206268116] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:41:54,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:41:54,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 72] total 141 [2022-04-06 14:41:54,942 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:41:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1283332268] [2022-04-06 14:41:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1283332268] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:41:54,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:41:54,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-04-06 14:41:54,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054163901] [2022-04-06 14:41:54,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:41:54,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-04-06 14:41:54,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:41:54,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-04-06 14:41:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14771, Unknown=0, NotChecked=0, Total=19740 [2022-04-06 14:41:54,944 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:41:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:41:58,069 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-04-06 14:41:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-06 14:41:58,070 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-04-06 14:41:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:41:58,070 INFO L225 Difference]: With dead ends: 84 [2022-04-06 14:41:58,070 INFO L226 Difference]: Without dead ends: 79 [2022-04-06 14:41:58,073 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2355 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=9858, Invalid=33198, Unknown=0, NotChecked=0, Total=43056 [2022-04-06 14:41:58,073 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 4659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:41:58,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 4659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 14:41:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-06 14:41:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-04-06 14:41:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:41:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-04-06 14:41:58,077 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2022-04-06 14:41:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:41:58,077 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-04-06 14:41:58,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:41:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-04-06 14:41:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 14:41:58,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:41:58,078 INFO L499 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:41:58,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-04-06 14:41:58,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-04-06 14:41:58,478 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-04-06 14:41:58,478 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:41:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:41:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash 721467190, now seen corresponding path program 133 times [2022-04-06 14:41:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:41:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1443010245] [2022-04-06 14:41:58,503 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:41:58,503 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:41:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2033644919, now seen corresponding path program 1 times [2022-04-06 14:41:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:41:58,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350114209] [2022-04-06 14:41:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:41:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:41:58,505 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_67.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_67.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:41:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:41:58,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037902044] [2022-04-06 14:41:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:41:58,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:41:58,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:41:58,509 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:41:58,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-04-06 14:41:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:41:58,553 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:41:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:41:58,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:41:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 721467190, now seen corresponding path program 134 times [2022-04-06 14:41:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:41:58,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685379806] [2022-04-06 14:41:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:41:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:41:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:42:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:42:00,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685379806] [2022-04-06 14:42:00,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685379806] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:42:00,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474771814] [2022-04-06 14:42:00,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:42:00,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:42:00,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:42:00,353 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:42:00,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-04-06 14:42:00,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:42:00,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:42:00,466 WARN L261 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 137 conjunts are in the unsatisfiable core [2022-04-06 14:42:00,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:42:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:00,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:42:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:06,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474771814] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:42:06,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:42:06,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 140 [2022-04-06 14:42:06,848 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:42:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1443010245] [2022-04-06 14:42:06,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1443010245] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:42:06,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:42:06,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-04-06 14:42:06,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772662784] [2022-04-06 14:42:06,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:42:06,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-06 14:42:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:42:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-06 14:42:06,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5037, Invalid=14423, Unknown=0, NotChecked=0, Total=19460 [2022-04-06 14:42:06,850 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:42:10,022 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-04-06 14:42:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-04-06 14:42:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2022-04-06 14:42:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:42:10,023 INFO L225 Difference]: With dead ends: 85 [2022-04-06 14:42:10,023 INFO L226 Difference]: Without dead ends: 80 [2022-04-06 14:42:10,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=10067, Invalid=32989, Unknown=0, NotChecked=0, Total=43056 [2022-04-06 14:42:10,025 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 4813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 14:42:10,025 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 268 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 4813 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 14:42:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-04-06 14:42:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-04-06 14:42:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2022-04-06 14:42:10,029 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2022-04-06 14:42:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:42:10,029 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2022-04-06 14:42:10,029 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2022-04-06 14:42:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 14:42:10,029 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:42:10,030 INFO L499 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:42:10,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-04-06 14:42:10,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-04-06 14:42:10,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134,SelfDestructingSolverStorable135 [2022-04-06 14:42:10,440 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:42:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:42:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 927107676, now seen corresponding path program 135 times [2022-04-06 14:42:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:42:10,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [811314052] [2022-04-06 14:42:10,468 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:42:10,468 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:42:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2092750263, now seen corresponding path program 1 times [2022-04-06 14:42:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:42:10,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84690223] [2022-04-06 14:42:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:10,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:42:10,470 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_68.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_68.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:42:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:42:10,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276757200] [2022-04-06 14:42:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:10,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:42:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:42:10,474 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:42:10,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-04-06 14:42:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:42:10,511 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:42:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:42:10,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:42:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 927107676, now seen corresponding path program 136 times [2022-04-06 14:42:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:42:10,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281083616] [2022-04-06 14:42:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:42:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:42:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:42:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281083616] [2022-04-06 14:42:12,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281083616] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:42:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620905586] [2022-04-06 14:42:12,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:42:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:42:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:42:12,327 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:42:12,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-04-06 14:42:12,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:42:12,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:42:12,461 WARN L261 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 139 conjunts are in the unsatisfiable core [2022-04-06 14:42:12,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:42:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:12,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:42:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:18,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620905586] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:42:18,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:42:18,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 142 [2022-04-06 14:42:18,907 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:42:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [811314052] [2022-04-06 14:42:18,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [811314052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:42:18,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:42:18,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-04-06 14:42:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144744501] [2022-04-06 14:42:18,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:42:18,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-06 14:42:18,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:42:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-06 14:42:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5180, Invalid=14842, Unknown=0, NotChecked=0, Total=20022 [2022-04-06 14:42:18,909 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:42:22,181 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-04-06 14:42:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-04-06 14:42:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-04-06 14:42:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:42:22,182 INFO L225 Difference]: With dead ends: 86 [2022-04-06 14:42:22,182 INFO L226 Difference]: Without dead ends: 81 [2022-04-06 14:42:22,184 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=10353, Invalid=33957, Unknown=0, NotChecked=0, Total=44310 [2022-04-06 14:42:22,184 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 14:42:22,184 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 343 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 14:42:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-06 14:42:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-04-06 14:42:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2022-04-06 14:42:22,188 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2022-04-06 14:42:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:42:22,188 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2022-04-06 14:42:22,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:42:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2022-04-06 14:42:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-06 14:42:22,189 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:42:22,189 INFO L499 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:42:22,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-04-06 14:42:22,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-04-06 14:42:22,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-04-06 14:42:22,603 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:42:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:42:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1287971850, now seen corresponding path program 137 times [2022-04-06 14:42:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:42:22,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [356547184] [2022-04-06 14:42:22,630 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:42:22,630 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:42:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2143111689, now seen corresponding path program 1 times [2022-04-06 14:42:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:42:22,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465688531] [2022-04-06 14:42:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:22,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:42:22,632 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_69.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_69.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:42:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:42:22,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441774371] [2022-04-06 14:42:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:22,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:42:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:42:22,635 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:42:22,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-04-06 14:42:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:42:22,675 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:42:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:42:22,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:42:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1287971850, now seen corresponding path program 138 times [2022-04-06 14:42:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:42:22,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102680648] [2022-04-06 14:42:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:42:22,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:42:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:42:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:42:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:42:24,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:42:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102680648] [2022-04-06 14:42:24,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102680648] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:42:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939943358] [2022-04-06 14:42:24,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:42:24,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:42:24,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:42:24,517 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:42:24,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-04-06 14:43:34,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2022-04-06 14:43:34,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:43:34,447 WARN L261 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 147 conjunts are in the unsatisfiable core [2022-04-06 14:43:34,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:43:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:43:34,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:43:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:43:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939943358] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:43:43,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:43:43,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 75] total 147 [2022-04-06 14:43:43,455 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:43:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [356547184] [2022-04-06 14:43:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [356547184] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:43:43,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:43:43,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-04-06 14:43:43,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075453324] [2022-04-06 14:43:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:43:43,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-04-06 14:43:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:43:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-04-06 14:43:43,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=16061, Unknown=0, NotChecked=0, Total=21462 [2022-04-06 14:43:43,457 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:43:46,956 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-04-06 14:43:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-04-06 14:43:46,957 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-04-06 14:43:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:43:46,957 INFO L225 Difference]: With dead ends: 87 [2022-04-06 14:43:46,957 INFO L226 Difference]: Without dead ends: 82 [2022-04-06 14:43:46,959 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=10719, Invalid=36153, Unknown=0, NotChecked=0, Total=46872 [2022-04-06 14:43:46,959 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:43:46,959 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 288 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 14:43:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-04-06 14:43:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-04-06 14:43:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2022-04-06 14:43:46,963 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2022-04-06 14:43:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:43:46,963 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2022-04-06 14:43:46,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2022-04-06 14:43:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-06 14:43:46,963 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:43:46,963 INFO L499 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:43:46,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-04-06 14:43:47,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-04-06 14:43:47,364 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138,SelfDestructingSolverStorable139 [2022-04-06 14:43:47,364 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:43:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:43:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1235960420, now seen corresponding path program 139 times [2022-04-06 14:43:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:43:47,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [161722863] [2022-04-06 14:43:47,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:43:47,391 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:43:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2084006345, now seen corresponding path program 1 times [2022-04-06 14:43:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:43:47,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559950176] [2022-04-06 14:43:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:43:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:43:47,394 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_70.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_70.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:43:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:43:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790604706] [2022-04-06 14:43:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:43:47,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:43:47,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:43:47,397 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:43:47,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-04-06 14:43:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:43:47,440 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:43:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:43:47,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:43:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1235960420, now seen corresponding path program 140 times [2022-04-06 14:43:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:43:47,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677043955] [2022-04-06 14:43:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:43:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:43:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:43:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:43:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:43:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:43:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:43:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677043955] [2022-04-06 14:43:49,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677043955] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:43:49,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038438174] [2022-04-06 14:43:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:43:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:43:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:43:49,366 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:43:49,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-04-06 14:43:49,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:43:49,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:43:49,446 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 143 conjunts are in the unsatisfiable core [2022-04-06 14:43:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:43:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:43:49,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:43:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:43:56,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038438174] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:43:56,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:43:56,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 146 [2022-04-06 14:43:56,396 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:43:56,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [161722863] [2022-04-06 14:43:56,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [161722863] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:43:56,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:43:56,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-04-06 14:43:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708483350] [2022-04-06 14:43:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:43:56,396 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-04-06 14:43:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:43:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-04-06 14:43:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5472, Invalid=15698, Unknown=0, NotChecked=0, Total=21170 [2022-04-06 14:43:56,398 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:43:59,872 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-04-06 14:43:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-04-06 14:43:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-04-06 14:43:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:43:59,873 INFO L225 Difference]: With dead ends: 88 [2022-04-06 14:43:59,873 INFO L226 Difference]: Without dead ends: 83 [2022-04-06 14:43:59,876 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=10937, Invalid=35935, Unknown=0, NotChecked=0, Total=46872 [2022-04-06 14:43:59,876 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5152 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 5152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:43:59,876 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 5295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 5152 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 14:43:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-04-06 14:43:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-04-06 14:43:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2022-04-06 14:43:59,880 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2022-04-06 14:43:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:43:59,880 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2022-04-06 14:43:59,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:43:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2022-04-06 14:43:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-06 14:43:59,880 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:43:59,880 INFO L499 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:43:59,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-04-06 14:44:00,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-04-06 14:44:00,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable141,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:00,285 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:44:00,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:44:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash 376393910, now seen corresponding path program 141 times [2022-04-06 14:44:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:44:00,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [893648956] [2022-04-06 14:44:00,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:44:00,326 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:44:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2024901001, now seen corresponding path program 1 times [2022-04-06 14:44:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:44:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326055990] [2022-04-06 14:44:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:44:00,328 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_71.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_71.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:44:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:44:00,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681525787] [2022-04-06 14:44:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:00,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:44:00,331 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:44:00,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-04-06 14:44:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:44:00,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:44:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:44:00,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:44:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash 376393910, now seen corresponding path program 142 times [2022-04-06 14:44:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:44:00,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978668581] [2022-04-06 14:44:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:44:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:44:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:44:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:44:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:44:02,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:44:02,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978668581] [2022-04-06 14:44:02,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978668581] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:44:02,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722305634] [2022-04-06 14:44:02,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:44:02,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:44:02,358 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:44:02,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-04-06 14:44:02,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:44:02,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:44:02,445 WARN L261 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 145 conjunts are in the unsatisfiable core [2022-04-06 14:44:02,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:44:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:44:02,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:44:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:44:09,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722305634] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:44:09,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:44:09,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 148 [2022-04-06 14:44:09,614 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:44:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [893648956] [2022-04-06 14:44:09,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [893648956] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:44:09,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:44:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-04-06 14:44:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502806583] [2022-04-06 14:44:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:44:09,615 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-04-06 14:44:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:44:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-04-06 14:44:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5621, Invalid=16135, Unknown=0, NotChecked=0, Total=21756 [2022-04-06 14:44:09,617 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:44:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:44:13,229 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-04-06 14:44:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-06 14:44:13,229 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2022-04-06 14:44:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:44:13,230 INFO L225 Difference]: With dead ends: 89 [2022-04-06 14:44:13,230 INFO L226 Difference]: Without dead ends: 84 [2022-04-06 14:44:13,232 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=11235, Invalid=36945, Unknown=0, NotChecked=0, Total=48180 [2022-04-06 14:44:13,232 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:44:13,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 14:44:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-06 14:44:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-04-06 14:44:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:44:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-04-06 14:44:13,236 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2022-04-06 14:44:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:44:13,236 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-04-06 14:44:13,236 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:44:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-04-06 14:44:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-06 14:44:13,236 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:44:13,236 INFO L499 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:44:13,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-04-06 14:44:13,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-04-06 14:44:13,637 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:13,637 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:44:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:44:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1180229412, now seen corresponding path program 143 times [2022-04-06 14:44:13,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:44:13,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [208193125] [2022-04-06 14:44:13,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:44:13,686 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:44:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1965795657, now seen corresponding path program 1 times [2022-04-06 14:44:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:44:13,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108714580] [2022-04-06 14:44:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:44:13,689 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_72.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_72.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:44:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:44:13,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984371360] [2022-04-06 14:44:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:13,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:44:13,692 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:44:13,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-04-06 14:44:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:44:13,730 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:44:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:44:13,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:44:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1180229412, now seen corresponding path program 144 times [2022-04-06 14:44:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:44:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901396659] [2022-04-06 14:44:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:44:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:44:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:44:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:44:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:44:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:44:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:44:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901396659] [2022-04-06 14:44:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901396659] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:44:15,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985533007] [2022-04-06 14:44:15,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:44:15,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:44:15,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:44:15,779 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:44:15,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-04-06 14:44:50,969 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-04-06 14:44:50,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:44:50,991 WARN L261 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 154 conjunts are in the unsatisfiable core [2022-04-06 14:44:50,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:44:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:44:51,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:45:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:38,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985533007] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:45:38,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:45:38,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 78] total 153 [2022-04-06 14:45:38,075 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:45:38,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [208193125] [2022-04-06 14:45:38,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [208193125] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:45:38,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:45:38,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-04-06 14:45:38,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900253477] [2022-04-06 14:45:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:45:38,075 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-04-06 14:45:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:45:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-04-06 14:45:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17404, Unknown=1, NotChecked=0, Total=23256 [2022-04-06 14:45:38,077 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:45:41,818 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-04-06 14:45:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-06 14:45:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-04-06 14:45:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:45:41,819 INFO L225 Difference]: With dead ends: 90 [2022-04-06 14:45:41,819 INFO L226 Difference]: Without dead ends: 85 [2022-04-06 14:45:41,825 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2784 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=11616, Invalid=39233, Unknown=1, NotChecked=0, Total=50850 [2022-04-06 14:45:41,826 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5323 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 5470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 5323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 14:45:41,826 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 5470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 5323 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 14:45:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-04-06 14:45:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-04-06 14:45:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-04-06 14:45:41,830 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2022-04-06 14:45:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:45:41,830 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-04-06 14:45:41,830 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-04-06 14:45:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-06 14:45:41,830 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:45:41,831 INFO L499 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:45:41,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-04-06 14:45:42,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-04-06 14:45:42,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144,SelfDestructingSolverStorable145 [2022-04-06 14:45:42,242 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:45:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:45:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2104055158, now seen corresponding path program 145 times [2022-04-06 14:45:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:45:42,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1038857490] [2022-04-06 14:45:42,273 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:45:42,273 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:45:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1906690313, now seen corresponding path program 1 times [2022-04-06 14:45:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:45:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388557304] [2022-04-06 14:45:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:45:42,275 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_73.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_73.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:45:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:45:42,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169925969] [2022-04-06 14:45:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:45:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:45:42,278 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:45:42,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-04-06 14:45:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:45:42,325 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:45:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:45:42,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:45:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2104055158, now seen corresponding path program 146 times [2022-04-06 14:45:42,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:45:42,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091390008] [2022-04-06 14:45:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:42,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:45:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:45:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:45:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:45:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:45:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091390008] [2022-04-06 14:45:44,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091390008] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:45:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52178293] [2022-04-06 14:45:44,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:45:44,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:45:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:45:44,416 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:45:44,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-04-06 14:45:44,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:45:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:45:44,470 WARN L261 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 149 conjunts are in the unsatisfiable core [2022-04-06 14:45:44,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:45:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:44,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:45:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52178293] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:45:51,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:45:51,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 152 [2022-04-06 14:45:51,895 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:45:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1038857490] [2022-04-06 14:45:51,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1038857490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:45:51,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:45:51,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-04-06 14:45:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124263516] [2022-04-06 14:45:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:45:51,895 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-04-06 14:45:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:45:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-04-06 14:45:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5925, Invalid=17027, Unknown=0, NotChecked=0, Total=22952 [2022-04-06 14:45:51,897 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:45:55,707 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-04-06 14:45:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-04-06 14:45:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2022-04-06 14:45:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:45:55,708 INFO L225 Difference]: With dead ends: 91 [2022-04-06 14:45:55,708 INFO L226 Difference]: Without dead ends: 86 [2022-04-06 14:45:55,711 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=11843, Invalid=39007, Unknown=0, NotChecked=0, Total=50850 [2022-04-06 14:45:55,711 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 5714 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 5863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 5714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 14:45:55,711 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 323 Invalid, 5863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 5714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 14:45:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-04-06 14:45:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-04-06 14:45:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-04-06 14:45:55,715 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2022-04-06 14:45:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:45:55,716 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-04-06 14:45:55,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:45:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-04-06 14:45:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-06 14:45:55,716 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:45:55,716 INFO L499 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:45:55,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-04-06 14:45:55,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-04-06 14:45:56,132 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-04-06 14:45:56,133 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:45:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:45:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 837661724, now seen corresponding path program 147 times [2022-04-06 14:45:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:45:56,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [675966000] [2022-04-06 14:45:56,164 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:45:56,164 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:45:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1847584969, now seen corresponding path program 1 times [2022-04-06 14:45:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:45:56,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775868464] [2022-04-06 14:45:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:45:56,167 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_74.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_74.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:45:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:45:56,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437509125] [2022-04-06 14:45:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:56,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:45:56,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:45:56,170 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:45:56,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-04-06 14:45:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:45:56,207 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:45:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:45:56,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:45:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash 837661724, now seen corresponding path program 148 times [2022-04-06 14:45:56,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:45:56,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261410553] [2022-04-06 14:45:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:45:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:45:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:45:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:45:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:45:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:45:58,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261410553] [2022-04-06 14:45:58,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261410553] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:45:58,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555151464] [2022-04-06 14:45:58,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 14:45:58,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:45:58,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:45:58,311 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:45:58,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-04-06 14:45:58,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 14:45:58,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:45:58,398 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 151 conjunts are in the unsatisfiable core [2022-04-06 14:45:58,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:45:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:45:58,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:46:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:46:06,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555151464] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 14:46:06,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 14:46:06,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 154 [2022-04-06 14:46:06,126 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:46:06,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [675966000] [2022-04-06 14:46:06,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [675966000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:46:06,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:46:06,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-04-06 14:46:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313639144] [2022-04-06 14:46:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:46:06,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-04-06 14:46:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:46:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-04-06 14:46:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6080, Invalid=17482, Unknown=0, NotChecked=0, Total=23562 [2022-04-06 14:46:06,128 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:46:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:46:10,021 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-04-06 14:46:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-04-06 14:46:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-04-06 14:46:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:46:10,022 INFO L225 Difference]: With dead ends: 92 [2022-04-06 14:46:10,022 INFO L226 Difference]: Without dead ends: 87 [2022-04-06 14:46:10,024 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=12153, Invalid=40059, Unknown=0, NotChecked=0, Total=52212 [2022-04-06 14:46:10,024 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 5922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 14:46:10,024 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 383 Invalid, 6073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 14:46:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-04-06 14:46:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-04-06 14:46:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:46:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-04-06 14:46:10,028 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2022-04-06 14:46:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:46:10,028 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-04-06 14:46:10,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:46:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-04-06 14:46:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 14:46:10,029 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:46:10,029 INFO L499 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:46:10,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-04-06 14:46:10,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-04-06 14:46:10,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148,SelfDestructingSolverStorable149,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:46:10,431 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:46:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:46:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 234170934, now seen corresponding path program 149 times [2022-04-06 14:46:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:46:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1519759351] [2022-04-06 14:46:10,464 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:46:10,464 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-06 14:46:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1788479625, now seen corresponding path program 1 times [2022-04-06 14:46:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:46:10,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063890790] [2022-04-06 14:46:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:46:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:46:10,466 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 1) main_~x~0_5) (* (- 2) .v_it_75.0) (* 4294967296 (div (+ main_~x~0_5 (* 2 .v_it_75.0)) 4294967296)) 268435455) 0)) [2022-04-06 14:46:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-06 14:46:10,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717163268] [2022-04-06 14:46:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:46:10,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:46:10,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:46:10,469 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:46:10,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-04-06 14:46:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:46:10,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 14:46:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 14:46:10,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 14:46:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 234170934, now seen corresponding path program 150 times [2022-04-06 14:46:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:46:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660538330] [2022-04-06 14:46:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:46:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:46:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:46:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:46:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:46:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:46:12,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:46:12,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660538330] [2022-04-06 14:46:12,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660538330] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:46:12,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366024502] [2022-04-06 14:46:12,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 14:46:12,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:46:12,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:46:12,627 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 14:46:12,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process